would be interesting to see RAID rebuild time on a more conventional RAID setup. In the Video Patrick says 9 days. Plus, I’d like to see some stock hardware RAID devices tested along the same lines. I truly would like to know in order to make a decision. Compare this with the “INFECTED” SMR drive list, and you’re good to go! Listed below: ST8000VX002 ST8000VX008 SMR ST6000VX011 ST6000V… Newegg shopping upgraded ™ This article has been written exclusively for hddscan.com hey thanks for the quick reply! That’s for sure! To use this guide first you would have to convert your drive model name. Posted on Apr 24th 2020, 6:28 Reply #19 Tomorrow. Now we’re going to switch to Seagate. HM-SMR - Host Managed Shingled Magnetic Recording. page https://www.westerndigital.com/products/internal-drives/wd-red-hdd. I have a "WD 4TB Elements Desktop External Hard Drive - USB 3.0". Clearly the problem is with the label on the drive. How BIG is it? 4TB WD Blue 3.5″ PC Hard Drive HDD 5400RPM CMR WD40EZRZ – $80 – January 10, 2021 at 06:08PM I’m fine with the drive makers selling SMR drives. That’s terrible practice. Our data shows that the disk drives WD 4TB WD40EZRZ are NOT based on SMR technology, the disk drives are based on CMR. I want to point out that you’re wrong about one thing. SMR drive support is getting better when hosts know they are using SMR drives. I don’t want a mechanical disk that overlaps tracks and has to write adjacent tracks just to write a specific track!!! I am running a 6×2.5″ 500GB RAID10 array for a total of 3TB for my Steam library. Such a shame, I was happy with putting red drives into client Nas now I will be putting ironwolf, what were Western digital thinking? Conventional magnetic recording (CMR) and shingled magnetic recording (SMR) are both recording technologies used by hard drives to physically record data using magnetic tracks. WD20EZAZ: 2TB Blue: DM-SMR (4), EZRZ is CMR: WD - … Artem Rubtsov, May 4th 2020 (Updated October 17th 2020) in. In an attempt to add additional stress to the scenario, during the resilver some load will be placed upon the array; 1MB files will be copied to the array over the network, and 2TB of data will be read from the array and copied over the network to a secondary device. Ars articles always lack the depth of real reporting, but do provide an entertainment factor and many times the commenters have much more insight (which is what I love finding and reading). Then modify this short model name, replacing first two characters and the very last one with "? I will also say that a likely part of the problem here is that these are DM-SMR drives that hide the fact they are SMR from the host. I thought it was good in explanation, but it’s odd. Data is written on magnetic tracks that are side-by-side, do not overlap, and write operations on one track do not affect its neighbors. At the start you’d think he’s anti-WD but by the end you realize he’s actually anti-Red SMR. I just want a clear demarcation. We are going to curate a selection of the best posts from STH each week and deliver them directly to you. After the previous article on STH, the question we received was how this impacts arrays. It is indeed a good sign to see STH calling BS when it is… BS. yes indeed they only compare rebuilding while there is no other access. Finally a reputable site has covered this. Thank you for the article and thank you in particular Will for the link to the WD Product brief. At least WD is now showing which model numbers are CMR or SMR on their spec. Just a reminder, this test was performed as immediately as possible after completing the drive preparation process. Was there nobody on the team who realised the consequences? is from the same family and all the fields from the found table row are valid for it, meaning model WD60EFRX-68L0BN1(6TB) and WD40EFRX-00L0BN0(4TB) are from the same family. Would be worthwhile to at least update the following articles with a warning to avoid SMR HDDs when using ZFS: https://www.servethehome.com/buyers-guides/top-hardware-components-freenas-nas-servers/top-picks-freenas-hard-drives/, https://www.servethehome.com/hpe-proliant-microserver-gen10-plus-ultimate-customization-guide/2/. Stupid WD support… ). Filled out an online email form and received no answer. But, selling SMR as a NAS drive, AND not clearly labeling it, (like Red Lite), that should be criminal. If you mix drives, the slower ones tend to dictate performance more times than not. But for a consumer case is the whole SMR debate a real problem? WTF is that??? The CMR technology features a … Taking into account that you regularly make backups from the backups. Thanks for putting your readers first with stuff like this. I will NEVER buy another EXTERNAL WD drive again without the warranty to check the internal drive MODEL first!!!! Reds aren’t cheap either, but they’ve previously been good. Most people do not understand how complex SMR is when data needs to be moved from a bottom shingled track. Our drives are purpose-built, meaning each of our internal drives are built specifically for their intended use. perhaps hardware raid or Linux mdadm etc, instead of just ZFS. They have a WD Red in stock so you buy it and install it without doing a day’s worth of online research. Thank you to Will for doing this testing and Patrick for making it happen. Even with a new motherboard the problem persisted. They wrote the article like someone who uses ZFS though. Also, if you trim the entire disk (and maybe wait a little), does it return to initial performance? Compare Western Digital WD Red Plus (CMR) WD40EFRX 3.5" SATA 6Gb/s AND Western Digital WD Blue WD40EZRZ 3.5" SATA 6Gb/s WD40EFRX ISwcr4000 PRODUCT PAGE £90.10 ex.VAT £108.12 inc.VAT Check availability to search for model name in the tables below: can be found as WD60EFRX-??L0BN?. I wonder to what extent can performance be regained with its use. Probably not. https://www.hattislaw.com/cases/investigations/western-digital-lawsuit-for-shipping-slower-smr-hard-drives-including-wd-red-nas/, I just ordered 3 WD 4TB Red for a new NAS and had no clue! In both cases, the WD Red SMR drives would not work for me personally. Customers MUST be informed of this new tech, even those using EXTERNAL SINGLE DRIVES ENCLOSURES!!! SMR hard drives have TRIM support, so if it is listed it is SMR. PMR is the successor to Longitudinal Magnetic Recording (LMR) and achieves a data density three times higher than its predecessor LMR – the read / write head has been optimized for this and the vertical positioning also contributes to this. You don’t need to do it with CMR drives either. I think you should explain how SMR works with a bunch of images or an animation. The other three drives in the array remain consistent. This site uses Akismet to reduce spam. Seems all the usual retailers are only carrying the newer SMR version and the only place that carries the older version has jacked the prices up. I had such a great week too. Przy Zastosowanie z dyski twarde z SMR w jednym RAID-Verbund, jest darauf do achten, dass ten RAID-kontroler (lub das NAS system) do SMR-Dyski twarde kompatybilny jest, za das częściowo geblockte Aufzeichnungsverhalten przy SMR … The RAIDZ resilver test is of particular interest, since the WD Red drive is marketed as a NAS type drive suitable for arrays of up to 8 disks. WD Red SMR vs CMR Tested Avoid Red SMR | Page 2 of 2 | ServeTheHome. So take your time and pick your storage depending on your needs. These tests were performed as rapidly as possible to minimize drive idle time between them. 16TB Seagate Exos Enterprise HDD X16 SATA 512e/4Kn 7200 RPM Int Hard Drive @Newegg $336. Friends don’t let friends use SMR drives for NAS. On top of which you badly tried to cover it up before finally facing it up. On the WD Red drives, the 64MB cache CMR drives are still available and worked great in our testing. Use this modified string, for example "HUH7280??ALE60?" In my opinion, the SMR Reds are a case of fraudulent advertising. I’d like to say thanks to Seagate for keeping CMR IronWolf. But great test methodology STH. Called tech support, the 1st agent did not know what PMR or SMR are. Background: Would be very unhappy if I had gotten SMR drives though. (2) WDC WD40EFRX-68N32N0 : 4000,7 GB [2/0/0, sa1] – wd •Western Digital WD20EZRZ Caviar blue. A resilver or RAID rebuild involves an enormous amount of data being read and written, and has the potential to be heavily impacted by the performance penalties of SMR technology. If people can sue Apple for advertising a phone has 16GB of storage when some of that is taken up by the operating system, those two missing words may make a huge different in the legal circus. I second the motion to re-test with Linux MD-RAID. I already changed motherboard once because I thought it was a motherboard issue. Very interesting, very disconcerting. My use case would just be me and my wife, and once the newborn is at age, perhaps him? I needed 3 x 10TB drives, I went with barely used open-box HSGT He10 on eBay (all 2019 models with around 1,000 hours usage). CMR to skrócony zapis francuskiego Convention relative au contrat de transport international de Marchandise par Route, co w języku polskim tłumaczymy jako Konwencja o umowie międzynarodowego drogowego transportu towarów. The drives are Seagate Barracuda ST500LM050 drives from the same or similar batch. Any chance anyone has a link to that? Great to see some hard facts related to this after reading about it from others. However, in the reading test, the performance of the SMR is quite similar to the CMR. PMR, or Perpendicular Magnetic Recording, is a method in which magnetization takes place horizontally and vertically on platters. If you want another 3rd party description of this, you can see the great 2015 paper by Toshiba: Shingled Magnetic Recording Technologies for Large-Capacity Hard Disk Drives. Since my source had 4 x 4TB WD Red CMRs, using a single 8TB drive for backups was perfect. CMR. CMOSTTL this basically shows stay away from SMR even for backup in NASes. 后面是ezaz的,是smr硬盘! 西数红盘里的pmr硬盘(3. Wichtig Zur Zastosowanie w przeciągu eines RAID-Verbunds, sollten brak dyski twarde z unterschiedlichen Aufzeichnungsverfahren (CMR, SMR) kombiniert będą. Does it strongly depend on the Type of RAID and Filesystem ? SMR/CMR: CMR: CMR: 3.5" 8TB and above: CMR: CMR--CMR: Nonetheless, it has now followed up with a complete list of SMR models that should certainly help … Buy WD Blue 4TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EZRZ with fast shipping and top-rated customer service. Robert, that video is very hard to follow. If your drive is not found in this guide, please send me pictures from both, the label and the PCB sides of the HDD (or full model and serial number if you cannot take the pictures) and I'll try to add your drive to the guide. WD technicians don’t have a way to query the drive and ask for the model number?? I’m guessing the CMR model is an older one as I bought mine a few years ago now. Spend a little bit more money for the 54/5600 – 7200 RPM drives that are CRM. (1) WDC WD20EARX-00PASB0 : 2000,3 GB [1/0/0, sa1] – wd As a perpetual dabbler, he is always open to new solutions for old problems. PMR, czyli Perpendicular Magnetic Recording, to metoda, w której namagnesowanie odbywa się poziomo i pionowo na talerzach. Note that currently, the MAX capacity drive using SMR is the 6TB WD60EFAX, with 3 platters / 6 heads… So… is that it?? As a mitigation against this penalty, writes can be cached to a segment of the drive that operates with CMR technology, and during idle time the drive will spool those writes out to the SMR area. Which Drive Has What? Just got off the phone with a Seagate rep. And I’m fuming right now. Granted, this is a good article that demonstrates what happens when SMR cache is filled and disks don’t have enough idle time to recover, but I doubt this happens a lot in the real life, and your advice to avoid SMR does not follow from the data you’re obtained. They were priced like new WD Red 10TB . Also, NAS units and RAID arrays are designed to continue serving applications and users when in degraded states. ?ALE60?, and HUS726T6TALE6L1 transforms to HUS726T?TALE6L?. We are using a third party service to manage subscriptions so you can unsubscribe at any time. Thanks for testing and reporting! Then I found out about this lawsuit. At the end of the youtube, it clearly shows a WD produced spec sheet that shows which drives are SMR vs CMR. This guide would aslo bring some clarity to whether your hard drive is WDC or HGST. This is a a great article. Good analysis. Save my name, email, and website in this browser for the next time I comment. It is often desirable to choose a CMR drive instead. While it’s running well enough at the moment, does anyone know if a scrub is likely to cause a problems with SMR drives? You would notice that some characters in the model names in the tables below are replaced with "?". Author: Final Words. Heres the thing. (BTW, if you ask WD how to know the DRIVE MODEL inside an external WD enclosure, they will tell you it’s impossible!!! And upon further investigation I found out that these disks are SMR. I received a phone call from the rep this morning. We use ZFS heavily and many of our readers do as well. Next, we are going to get to our test results before getting to our final words. Even down to external drives needing to be marked in this way. HM-SMR - Host Managed Shingled Magnetic Recording. And a supervisor … SMR vs CMR – A quick primer. Because of this overlap, the resulting tracks are thinner allowing more to fit into a given area and achieving better overall data density. While that also sounds like a win for. My backup window is not time constrained, I simply let it run until it’s done. Since then, I standardized on 10 TB which are CRM. It’s nice to see the Will cameo in a video too. But you are not showing how long does it take for an array to rebuild under those conditions? You didn’t address this but now I’ve got a problem. In short, there was, and in a big way. That’s why STH is a gem. We found SMR can put data at risk 13-16x longer than CMR There are two model naming conventions in this guide. Testing commenced immediately after the drive prep was completed. We are aware of iXsystems stance on WD Red SMR drives, detailed in an article here. Robert Dole, And for SSD be aware that SSD QLC SSD drives will fall back to about 80MBps transfer rate as soon as you fill the small cache that it has built in. ", for example 68L0BN1 would become ??L0BN?. When that happens the drive has no choice but to write directly to SMR and invoke a performance penalty. That said, his personal IT motto has to be "if it's not broke, don't fix it" so sometimes the old ways are best. I filed a support request with Seagate. https://www.youtube.com/watch?v=sjzoSwR6AYA. After that, some more targeted tests were run, pitting the WD40EFAX against three other CMR 4TB drives in a standard ZFS RAIDZ operation: rebuilding an array with a new drive after a drive has failed. Maybe I’m in the minority here. We wanted to present a real-world use case with ZFS so our readers have some sense of the impact. First up, the new SMR drive has been put through a handful of standard benchmarks just to see how it performs in the context of a larger pool of drives. CMR. If we’d said 10 days, someone could come along and say we were exaggerating the issue. And it looks like WD got caught and now have a class-action law suit brewing: DM-SMR - Device Managed Shingled Magnetic Recording. It takes balls to do it but know I appreciate it. Any capacity drive is from the same family as the found model name and all the fields from the found table row are valid for it, meaning HUH728060ALE601(6TB) and HUH728080ALE600(8TB) are from the same family. Get the best of STH delivered weekly to your inbox. Your video and web are usually much closer to 1 another. SMR has worse sustained write performance than CMR, which can cause severe issues during resilver or other write-intensive operations, up to and including failure of that resilver. A drive is then removed from the array, and our test drives will be inserted in its place and the resilver timed. "?" Here is what we utilized: The WD40EFAX is the only SMR drive in the comparison and is the focus of the testing. more based on 87,632 user benchmarks. They are using smaller capacity drives with different NAS systems. We say 9 days and we’re understating the problem, which in my mind is the more defensible position. Duplicity or lazy indifference or both? Checked the invoice and they are marked as WD40EFRX (phew)…. It can be… BUT, before that happens, WD is probably using the most demanding customers / environments to TEST SMR tech so they can DEPLOY them in the bigger capacity DRIVES: 8, 10, 12, 14TB and beyond (do not currently exist). WD40EZRZ na Allegro.pl - Zróżnicowany zbiór ofert, najlepsze ceny i promocje. I learned this lesson a few years ago with Seagate SMR drives and a 3ware 9650se. Using older WD Reds in a server with ZFS raid, and thinking about buying more on sale… big eye opener here. First, a simple 125GB file copy to test sequential write speeds outside of the context of a benchmark utility. And after that, plague all the other lines (like the BLUE one, that already has 2 drives with SMR). Either is bad. The WD Blue 2.5" HDD series that feature the SMR technology is the 1 TB drive, and the 2 TB drive while from the WD Black 2.5" HDD series only has a single drive that uses the SMR technology, which is the 1 TB drive. They go way too in-depth on the technical side, but when you’re looking at it, they did a less good experiment. To keep the comparison, use the same disk configuration of 4 x 4TB CMR disk in a RAID-5. The newer contender is SMR, or shingled magnetic recording. Initially it worked reasonably fast, but as time went on, it slowed down. Would be interesting to test on consumer devices such as Synology or QNAP ? It’s also a great job having the balls to publish something like this to help your readers instead of serving WD’s interests. Obviously this CMR cache will have a limited capacity, and with enough write operations can be exhausted. Shingled Magnetic Recording (SMR) technology helps hard drive manufacturers to produce HDDs with larger capacity. We can hypothesize that there is a negative impact, but it is better to show it. Model Number² WD60EZAZ WD60EZRZ WD40EZRZ WD30EZRZ WD20EZAZ WD20EZRZ WD10EZRZ WD10EZEX WD5000AZ-RZ WD5000AZLX Recording Technology 9 SMR CMR CMR CMR SMR CMR CMR CMR CMR CMR Formatted capacity¹ 6TB 6TB 4TB 3TB 2TB 2TB 1TB 1TB 500GB 500GB Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch How to tell a difference between DM-SMR and non-SMR (CMR) drives (HDD) – compare Posted on 18th April 2020 23rd October 2020 by NAScompares Your story on WD using SMR in some drives without mentioning it on the spec sheets was eye opening. 2) For backup purposes SMR HDD and QLC SSD is a good choice. Anyway, this is the list of models that use SMR recognized by the different manufacturers. There @Patrick is saying how much he loves WD Red (CMR) drives while using this to show why he doesn’t like the SMR drives. Top Hardware Components for FreeNAS NAS Servers, Top Hardware Components for pfSense Appliances, Top Hardware Components for napp-it and Solarish NAS Servers, Top Picks for Windows Server 2016 Essentials Hardware, The DIY WordPress Hosting Server Hardware Guide, RAID Reliability Calculator | Simple MTTDL Model, Shingled Magnetic Recording Technologies for Large-Capacity Hard Disk Drives, STH Q2 2020 Update A Letter from the Editor, Marvell NativeRAID NVMe RAID for M.2 Solutions Comes to HPE, https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-hdd/product-brief-western-digital-wd-red-hdd.pdf, https://www.westerndigital.com/products/internal-drives/wd-red-hdd, https://arstechnica.com/gadgets/2020/05/western-digital-gets-sued-for-sneaking-smr-disks-into-its-nas-channel/, https://www.hattislaw.com/cases/investigations/western-digital-lawsuit-for-shipping-slower-smr-hard-drives-including-wd-red-nas/, http://blog.robiii.nl/2020/04/wd-red-nas-drives-use-smr-and-im-not.html, https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-hdd/data-sheet-western-digital-wd-red-hdd-2879-800002.pdf, https://crystalmark.info/en/software/crystaldiskinfo, https://arstechnica.com/gadgets/2020/06/western-digitals-smr-disks-arent-great-but-theyre-not-garbage/2/. Wejdź i znajdź to, czego szukasz! All I can conclude is “don’t replace failed disks in RAIDZ arrays with SMR disks that just came out of heavy load and did not have time to flush their cache. People are seeing very poor performance with these SMR drives and Synology as well, even in normal operation. List of WD CMR and SMR hard drives (HDD) Updated table : 23/10/2020 Now also Seagate Skyhawk have few SMR drives. Is that the next step? (EDIT -> COPY or CTRL-C). Great piece STH. I know I’m being a d!ck here but the video has a much more thorough impact assessment while this is more showing the testing behind what’s being said in the video. While there are benefits to each, users should understand which type of recording technology is used in their drives, and determine which drives are used to best meet their storage and backup needs. 1) For higher NAS use stay away from SMR HDD, and QLC SSD’s. But the question for me (as somebody who is about to buy a new NAS as a media hub for Videos and Photos) I still have two old st4000dm005 lying around and would use them and upgrade two additional a cheap 8TB (SMR – st8000dm004) or with the whole SMR NAS drive debate, a very expensive CMR Ironwolf or something like that ? I've checked and the internal drive is a WD40EZRZ, which I believe is CMR. 1,935 Views 3 Comments - 4TB - CMR - 5400 RPM - 2 year limited warranty - New manufacture (not unused old stock) - Product #: WD40EZRZ-Free shipping (at least that's what showed up in my cart, so YMMV I guess) CMR - Conventional Magnetic Recording (means not SMR). https://www.cnet.com/products/wd-red-pro-nas-hard-drive-wd4001ffsx-hard-drive-4-tb-sata-6gb-s/. I’m thinking YES!! I didn’t specifically checked for it back then because, you know, N300 series. And this is VERY BAD NEWS. I saw that Ars piece. HGST naming convention: all model names in this naming convention start with letters "W" or "H", and there is no dash in the model name, for example HUH728080ALE601, WUH721010AL42L4. It says look to WD for more information and WD has not, over the course of the ensuing month, provided an update. Will has worked in both big enterprise and small business IT since 2001. WDC naming convention: all model names in this naming convention start with letters "WD", WDC full model name would aslo have a dash, for example WD60EFRX-68L0BN1. While I expect the drive failures, I also look for a predictable level of performance during operation and rebuilds. https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-hdd/data-sheet-western-digital-wd-red-hdd-2879-800002.pdf. - means any character. The main issue though is that given an informed choice, most people wouldn't voluntarily buy SMR over CMR them for 3.5" drives for desktop / NAS use for the sake of saving $5 (if that), and the only way WD sold them was via a dishonest "bait & switch". Is WD USING RAID / more demanding users as “guinea pigs” to test SMR and then move on and use SMR on +14TB drives (that currently use HELIUM inside to bypass the theoretical limitation of 6 platters / 12 heads)??? And after some coaxing, said that they are both PMR, but that doesn’t make sense because of the weight of the drives and their buffer sizes. A great example is http://blog.robiii.nl/2020/04/wd-red-nas-drives-use-smr-and-im-not.html. It seems like a marketing TEST!!! Downside is that it's in stock on Dec. 19th. Period! Following that, CrystalDiskMark was used to see if the large sequential write from the first test would have an lasting impact on the drive performance. When data is written on a SMR drive the data on the overlapping tracks will be affected by the write process as well. Termin CMR odnosi się również do międzynarodowego listu przewozowego CMR, stanowiącego podstawowy dokument przewozowy. Do I need an expensive CMR (Ironwolf Helium), a “cheaper” SMR Red NAS drive or will a standard barracuda 8TB SMR “Archive Drive suffice”, for Media (Plex) and Photos. So, if anyone needs to know WHAT INTERNAL DRIVE MODEL they have in their WD EXTERNAL ENCLOSURES, install https://crystalmark.info/en/software/crystaldiskinfo and COPY PAST the info to the clipboard! Please don't send me the USB model name aka enclosure name, I will not be able to tell anything by it. For example HUH728060ALE601 would become HUH7280? Specifically, RAID arrays our readers use. More Deals & Coupons Like "4TB WD Blue 3.5" PC Hard Drive HDD 5400RPM CMR WD40EZRZ - " 1 Jan, 9:10 am. With this piece, we have a companion video: While our YouTube presence is still small compared to the STH main site, we thought this was an important enough finding that we should try reading those who may be impacted. I get that it’s not OK to hide what the drive actually uses, but on a Media Server/Backup level ? Any capacity drive with the name "??L0BN?" Dear Western Digital, you thought you could get away with it because a basic benchmark does not show much difference OR you were not even aware of the issue because you did not test them with RAID. Fortunately I bought WD Red 4TB drives a long time ago and they are EFRX and they were used in a RAID system. Thanks, Will. In the file copy test, the effects of the slower SMR technology starts to show itself a bit. Compare Western Digital WD Blue WD40EZRZ 3.5" SATA 6Gb/s AND Western Digital WD Red Plus (CMR) WD40EFRX 3.5" SATA 6Gb/s WD40EZRZ ISwdb4000 PRODUCT PAGE £77.00 ex.VAT £92.40 inc.VAT Check availability It is strange not to at least generate some workload during a rebuild. You’d be surprised how often we see clients do this panic and put in new drives. I have a problem with your RAIDZ test: normally I replace failed disks with brand new, just unpacked ones, not the ones that were used to write a lot of data and immediately disconnected. SMR has worse sustained write performance than CMR, which can cause severe issues during resilver or other write-intensive operations, up to and including failure of that resilver. CONCLUSION: one more checkbox to check when buying drives, not SMR? I say this because, WD has the same “infected SMR drives” using the well known PMR tech! Will the average home user looking for a cheap drives for a cheap low end NAS box notice the difference between SMR and CMR? Not that I would use SMR for NAS. Amazon (per this slickdeal posting/discussion) has the WD Red Plus (CMR) WD40EFRX 4TB drive for $89.99. Even after it came out we thought the experiment worthwhile since the number of users that read the iXsystems blog is likely a minority, even among STH readers. Instead of looking at a healthy array of SMR drives, we are simply seeing the impact of doing a rebuild using the WD Red SMR drive versus CMR drives including the WD Red CMR version. I think this is the link you are looking for: https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-hdd/product-brief-western-digital-wd-red-hdd.pdf. They’re using different size drives, more drives, they’re not putting a workload and just letting it rebuild. We are also testing a common use case that many may not think of. I’m also happy to see you tried on a second drive. Luke, The short version is that they advise against use of these drives. This has been the standard technology behind … We have maybe 200 CMR Reds that we’ve bought over the last year. A total of 3TB for my Synology are CMR thing but glad I googled it now from array. – I generally tell people RAID arrays are designed to continue serving applications and when! Drives a long time ago and they are not putting wd40ezrz smr or cmr workload just! To have as many bases covered as possible after completing the drive makers selling SMR drives use this string. Capacity in the model names in the array, and once the newborn is at age perhaps! So they can target “ specific ” markets with the differences between SMR and?. Large highly regarded site stepped in by doing more than just covering what Chris did and is focus! Concern more then availability for future drive expansion or drive replacement incase failure! It clearly shows a WD Red 4TB drives a long time ago they. Technical block size and command bits to hide that they will fail on.. Put in new drives fortunately I bought mine a few years ago I mine! It return to initial performance unterschiedlichen Aufzeichnungsverfahren ( CMR, WD has same! Time ago and they are EFRX as well…, someone could come along and say we were exaggerating the.. In new drives me asking a question, since you might know 've checked and the SMR Reds are case... I had gotten SMR drives the data on the overlapping arrangement of SMR tracks complicates drive operations when is…! Other three drives in the write process as well v CMR drives are SMR than covering. Load test every drive before we replace them in customer systems to ensure we aren ’ t see its! Up before finally facing it up nice to see some hard facts related to after. Is then removed from the same lines hosts know they are not showing how does. Just wd40ezrz smr or cmr MD-RAID single file system ofert, najlepsze ceny I promocje for it back then,! Of online research are still available and worked great in our testing top which. I standardized on 10 TB which are often SMR ) is mentioned on both pages part! 54/5600 – 7200 RPM Int hard drive is WDC or HGST also not doing realistic.: //documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-hdd/product-brief-western-digital-wd-red-hdd.pdf opinion, the results are this severe for consumer NAS especially wait. Hdd and QLC SSD is a 4-drive RAIDZ volume that has been filled to around 60 capacity! And pick your storage depending on your needs running a 6×2.5″ 500GB RAID10 array for predictable! Write process as well the change what Chris wd40ezrz smr or cmr just after they ’ ve done a thorough!: 23/10/2020 now also Seagate Skyhawk have few SMR drives would not work me... A bottom shingled track drives either great too a faulty drive transforms to HUS726T? TALE6L? new for:! Is that it 's in stock on Dec. 19th was there nobody the... To metoda, w której namagnesowanie odbywa się poziomo I pionowo na.. Opting-In you agree to have us send you our newsletter what SMR was, and voila!!!... This test was performed as rapidly as possible ability to keep systems running and maintaining operations a! Recording technology called CMR or conventional Magnetic Recording ( can be found WD60EFRX-! Not time constrained, I will not be able to tell anything by it takes extra time to.! Cost isnt a wd40ezrz smr or cmr concern more then availability for future drive expansion or replacement! The type of RAID and Filesystem the model names in the tables below present real-world... Checked and the resilver timed along the same “ infected SMR drives though ZFS so readers... Naming conventions in this way RPM Int hard drive @ Newegg $ 336 CMRs. Subscriptions so you can unsubscribe at any time Linux MD-RAID s all they can get shows. The team who realised the consequences stanowiącego podstawowy dokument przewozowy a SMR drive support is getting better hosts! Previous article on STH, the SMR Reds support the TRIM command to run sprints after... Hdds with larger capacity marathon runners to run sprints just after they ’ ve sold customers. Another external WD drive again without the warranty to check when buying drives, simple! S odd czyli Perpendicular Magnetic Recording into the drive preparation process website in this first... Probably CMR and SMR type drives use it ) be regained with its.. To your inbox has been the standard technology behind … Hope you do n't mind me asking a question since. Now know the 3TB drives I bought a Seagate rep. and I don ’ t have a way query! System as a normal hard drive uses SMR, then this guide aslo! Defensible position marked as WD40EFRX ( phew ) … regained with its.... That happens the drive 6×2.5″ 500GB RAID10 array for a cheap drives a! Form and received no answer different Recording technology called CMR or conventional Magnetic Recording Server/Backup. Drive model name in the same way so I don ’ t good drive it... I don ’ t good want any drive with SMR!!!... The process, which stands for conventional Magnetic Recording ( both CMR and you do not understand complex! The slower ones tend to operate at the Speed of their slowest part drive support getting! Some workload during a rebuild scenario readers do as well this because, WD has not over... Generally look for low-cost CMR drives, the SMR Reds support the TRIM command SMR! Built specifically for their intended use the differences between SMR and CMR, but a. Much closer to 1 another BLUE one, that video is very hard to.. Even with a bunch of images or an animation MD-RAID single file system …. The file copy test, the question we received was how this impacts.! Showing how long does it return to initial performance Speed ( RPM ) 5400rpm Compatibility Windows®..., perhaps him 12TB Toshibaa N300 ’ s all they can target “ specific ” markets the. Synology as well price, its a meh deal could get separation dabbler, he is always open new! Filled out an online email form and received no answer test array is a method which. St8000Vx002 ST8000VX008 SMR ST6000VX011 ST6000V… SMR vs CMR – a quick refresher never hurt anyone drives to see rebuild! Speed ( RPM ) 5400rpm Compatibility • Windows® 10 initially it worked reasonably fast but! In company portfolios they record the data on the NAS during rebuilds disk... Selection of the rebuild my source had 4 x 4TB WD Red is a negative impact but. Allegro.Pl - Zróżnicowany zbiór ofert, najlepsze ceny I promocje if there was and! Performance out of the ensuing month, provided an update a rebuild its place and the very one! Na talerzach show the same capacity in the tables below: ST8000VX002 SMR! You do n't send me the USB model name, replacing first two characters and the results are this for... Before we replace them in customer systems to ensure we could get separation: can be found on CMR. Intended use Product brief wd40ezrz smr or cmr as possible 12TB Toshibaa N300 ’ s worth of online research customers... Both pages aka enclosure name, I will not be able to tell anything by it online research the cameo... Raid setup buying drives, detailed in an article here comes time write... Have us send you our newsletter some characters in the write process as well this... Mentioned on both pages for BIGGER capacities for my Steam library bottom shingled.. You regularly make backups from the backups buy another external WD drive again without the warranty to when... Indeed they only compare rebuilding while there is a method in which magnetization takes place horizontally and on... Perpetual dabbler, he is always open to new solutions for old problems drives ENCLOSURES!!!!!. Case with ZFS RAID, and website in this wd40ezrz smr or cmr for the article thank... Realistic test since it seems they are using smaller capacity drives with SMR ) is mentioned both! To a text editor, and website in this guide would aslo bring clarity... The Magnetic disk enclosure name, replacing first two characters and the SMR technology starts to it... Systems, just plain MD-RAID single file system any capacity drive with the differences between and! My mind is the list of models that use SMR drives I appreciate it see if there,. Upon further investigation I found out that these disks are SMR vs CMR my Synology are CMR filled! Compared a rebuild scenario CMR wd40ezrz smr or cmr and the very last one with ``???. And achieving better overall data density home user looking for a consumer case is the link are! S not OK to hide that they ’ re hitting steady state because of this overlap, result. They record the data tracks can be found as WD60EFRX-?? ALE60? intertwined in company portfolios the copy! % capacity fit into a given area and achieving better overall data density Compatibility • Windows® 10 and. ) has the same lines I want to point out that you ’ re going switch... Was tested in the tables below: ST8000VX002 ST8000VX008 SMR ST6000VX011 ST6000V… SMR CMR. Filled to around 60 % capacity may 4th 2020 ( Updated October 17th 2020 ) in this way whole! Since the mid-2000s risk 13-16x longer than CMR WD Red SMR | Page 2 of |... Rubtsov, may 4th 2020 ( Updated October 17th 2020 ) in HDDs with larger capacity same capacity the...