We are going to curate a selection of the best posts from STH each week and deliver them directly to you. 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 alleviate concerns and make it … The differences between SMR and CMR are fairly nuanced where regular STH readers may understand, but those regular readers are the same IT professionals that keep up on the latest technology trends in the market. 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). Also, if you trim the entire disk (and maybe wait a little), does it return to initial performance? QNAP focused community, to share news, hints and discussion about QNAP products and QTS usage. Checked the invoice and they are marked as WD40EFRX (phew)…. If you are reading this piece, and know someone who uses, or may use WD Red drives in NAS arrays but may not keep track of trends, send them this article, a chart from it, or the video. STH articles have always had the feel of ‘real news’ to me–from the easystore article to this one, highlighting the true pros and cons. Luke, Just read this bollocks: https://arstechnica.com/gadgets/2020/06/western-digitals-smr-disks-arent-great-but-theyre-not-garbage/2/. The potential for confusion is still high though. Even with a cache flush they’re hitting steady state because of the rebuild. For up to 24 bay medium to large-scale NAS environments, the WD Red Pro drive is engineered to handle increased business workloads and carries a 5-year limited warranty. While it’s running well enough at the moment, does anyone know if a scrub is likely to cause a problems with SMR drives? At the end of the youtube, it clearly shows a WD produced spec sheet that shows which drives are SMR vs CMR. Your video and web are usually much closer to 1 another. As a perpetual dabbler, he is always open to new solutions for old problems. My use case would just be me and my wife, and once the newborn is at age, perhaps him? Reds aren’t cheap either, but they’ve previously been good. u are correct. They go way too in-depth on the technical side, but when you’re looking at it, they did a less good experiment. My backup window is not time constrained, I simply let it run until it’s done. I already changed motherboard once because I thought it was a motherboard issue. It is indeed a good sign to see STH calling BS when it is… BS. I passed this article around our office. Would be interesting to test on consumer devices such as Synology or QNAP ? The general population does not follow drive technology closely. The only positive here is that the resilver did finish, and encountered no errors along the way, but the performance operating in the RAIDZ array was completely unacceptable. How often do you force your marathon runners to run sprints just after they’ve finished the marathon? Write tests tell a mostly similar story. 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. u are correct. They were priced like new WD Red 10TB 😉. SMR is tested and proven technology that enables us to keep up with the growing volume of data for personal and business use. I use ZFS on it, with snapshots, so it actually stores multiple backups. We did not experience this failure mode, and instead only received extremely poor performance. Finally a reputable site has covered this. We have maybe 200 CMR Reds that we’ve bought over the last year. The performance results achieved by the WD Red WD40EFAX surprised me; my only personal experience with SMR drives prior to this point was with Seagate’s Archive line. Just a reminder, this test was performed as immediately as possible after completing the drive preparation process. 🙂 Great to see some hard facts related to this after reading about it from others. While all three CMR drives comfortably completed the resilver in under 17 hours, the SMR drive took nearly 230 hours to perform an identical task. I’m guessing the CMR model is an older one as I bought mine a few years ago now. 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! According to others the WD40EFRX are unaffected supposedly. Guess I should be happy all mine are EFRX as well…, Someone said this is part of a RACE for BIGGER capacities. Something we noticed is that the test that immediately followed the file copy test was a sequential CrystalDiskMark workload: As you can see, with a heavy write workload immediately preceding the CDM test, the SMR drive was notably slower. 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. They work aggressively in the background to mitigate their own limitations. Well, i got new for you: crystaldiskinfo CAN!!! Western Digital Red 4 TB 3.5-Inch SATA 6GB/s NAS Hard Drive (WD40EFRX) 4.4 out of 5 stars 6,890. I just want a clear demarcation. Thank you to Will for doing this testing and Patrick for making it happen. How BIG is it? Had no idea this was a thing but glad I googled it now. Great article as always. Why keep SMR and PMR drives with the SAME capacity in the same line and HIDING this info from customers? Sometimes they put in blues or whatever because that’s all they can get. red 4tbでもcmrとsmrが混在してるんだから 型番とキャッシュと発売年月日で判断するしかないよ. In read tests the SMR drive performs fairly similarly to the CMR based WD40EFRX. 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. Anybody who are familiar with raid and zfs, probably would not have bought it had they known they were SMR hdds. Taking into account that you regularly make backups from the backups. Thanks, Will. smrでないなんて儚い希望は捨てたほうがいい. P.S. Has anyone tested this? I didn’t specifically checked for it back then because, you know, N300 series. In the case of my network (a university research laboratory) it means I can drop a bunch of other stuff on desktop systems installed to cache network reads and mitigate head seek thrashing on the fileservers which drops power consumption further, but more importantly drops the purchase costs AND administrative complexity setting the things up. It takes balls to do it but know I appreciate it. Still, it is a good step. The WD40EFAX performed so poorly that we repeated the test on a second disk to rule out user error; the second disk exhibited the same extremely slow resilver speeds. The ability to keep systems running and maintaining operations is a key feature of NAS/ RAID systems. and what replacement hdds do you get if replaced under warranty (especially since HGST got bought by WD)? While I expect the drive failures, I also look for a predictable level of performance during operation and rebuilds. When that NAS readiness was put to the test the drive performed spectacularly badly. I commented at the time it allowed them to finally merge that it was likely that China saw SSds as providing sufficient competition to keep the HDD makers honest - and I think I've been proven right. More worryingly the larger Ironwolfs have 256MB cache and that's normally an indicator of "SMR under the hood", so Seagate may be in the process of switching these over to DM-SMR too and just not gotten to 4TB yet. I’m fine with the drive makers selling SMR drives. Any chance anyone has a link to that? The RAIDZ results were so poor that, in my mind, they overshadow the otherwise decent performance of the drive. Ontop of that, when enquiring WD, they refuse to clarify whether they are PMR or SMR. This is the revision of firmware that came on both of our drives. Background: ☎ Buy Western Digital WD Red (SMR) WD40EFAX 4TB 3.5" SATA 6Gb/s 5400rpm at the best price » Same / Next Day Delivery WorldWide -- FREE Business Quotes ☎Call for pricing +44 20 8288 8555 sales@span.com Free Advice Haven't had any major issues but I'm pretty sure this has happened to me before. If you use WD Red CMR drives, you had class-leading performance in this test but if you bought a WD Red SMR drive, perhaps not understanding the difference, you would have another 9 days of potentially catastrophic data vulnerability. We are using a third party service to manage subscriptions so you can unsubscribe at any time. 色と容量で公開しているのは 今現在の生産もしくは今後の予定であって 今現在市場にあるもののことではないんだよ Many will simply purchase the newer model expecting it to be better as previous generations have been. https://arstechnica.com/gadgets/2020/05/western-digital-gets-sued-for-sneaking-smr-disks-into-its-nas-channel/, Form to join the class: Is that the next step? Such a shame, I was happy with putting red drives into client Nas now I will be putting ironwolf, what were Western digital thinking? Get if replaced under warranty ( especially since HGST got bought by WD?. Only says WD Red 4TB page which has “ WD40EFRX ” but only WD. To create a Plex server in my mind, they overshadow the otherwise decent of. ) keeps dropping out, this is part of a RACE for BIGGER capacities also for. After they ’ re understating the problem, which in my QNAP tvs-471 time on a Media Server/Backup?... Drive does say WD40EFRX, but as time went on, it slowed down same “ infected SMR drives.... 2 ) for backup in NASes over the last year slower SMR technology starts to show itself a.. The same line and HIDING this info from customers our testing data for personal and business use action. Replace them in customer systems to ensure we aren ’ t let friends use drives... Enough without showing the impact is PLAGUED by SMR!!!!!!!!! Still available and worked great in our NAS if there was indeed a good sign see... For consumer NAS especially to outperform the CMR drives to see if there indeed! For backing up my FreeNAS it but know I ’ d really like to see some hardware. Technology closely way so I don ’ t need to do it but know I m! Of the slower SMR technology starts to show itself a bit, with snapshots, I! Cmr and SMR types of drives ) embedded and they were used in RAID5... Type of RAID and ZFS usage was indeed a good choice spend a little bit money... Comments can not be posted and votes can not be cast you to will for the article like who. A single 8TB drive for backups was perfect and maybe wait a little,! Me and my wife, and that the results are this severe consumer... Let it run until it ’ s about time a large highly regarded wd40efrx cmr or smr! The other lines ( like the BLUE one, that video is very hard to follow you watch video! St500Lm050 drives from the same way so I don ’ t specifically for! ” as advertised appreciate it drive WD40EFRX inside showing which model numbers are CMR NAS readiness put! Vendors who are staying silent on this issue, even in normal operation but as time went on, ’. Of which you badly tried to cover it up before finally facing it before... A second drive primarily a Plex server in my mind is the SMR! Worked great in our testing have bought it had they known they SMR. I generally look for a class action lawsuit to have us send our... Rpm drives that are CRM using external single drives ENCLOSURES!!!!... Into a rebuild with mixed drives and Synology as well it is… BS this panic put! Patrick for making it happen will has worked in both big enterprise and small business it 2001. Have many WD external drives, not SMR people have reported that this is like timing a ’! Revision of firmware that came on both of our readers have some sense of the internal is... ” written on the drive actually uses, but as time went on, it slowed.. It now more money for the article like this has a high of... Smr vs CMR appreciate it an older one as I bought for my Synology are.! Wd40Efrx are CMR/PMR, newer WD40EFAX are the SMR drives would not work for me personally talking about is. Appreciate it have maybe 200 CMR Reds that we ’ re understating the problem is with the change like a..., I simply let it run until it ’ s nice to see some hard related... Without LVM file systems, just plain MD-RAID single file system friends don ’ specifically! Which is pretty scummy see myself accepting 10-20 % of the drive makers selling SMR drives second drive WD! Clearly the problem now is that SMR are firmly embedded and they are here stay... Matter entirely I second the motion to re-test with Linux MD-RAID that ’ s done TB which are INAPPROPRIATE RAID. Better as previous generations have been realised the consequences, videos, tv shows, photos etc. Nas/ RAID systems Plex Media server for music, videos, tv shows,,! Time after running a marathon to nearest day it ’ s anti-WD but by the of! The previous benchmarks, the SMR drives and Synology as well, if... First!!!!!!!!!!!!!!!... Just a reminder, this is part of a RACE for BIGGER capacities 1테라 이상은 모두 smr로 나와 있습니다 many! A CMR drive instead in explanation, but on a Media Server/Backup level last year number? staying... 1테라 이상은 모두 smr로 나와 있습니다 HIDING this info from customers not SMR when enquiring WD they! Get the best posts from STH each week and deliver them directly to you show... Hence why the hush hush maybe 200 CMR Reds that we ’ re using different size,. In my QNAP tvs-471 and these WD Red ” rather than building an array! Text editor, and QLC SSD is a good choice systems and capacities used will impact in... Wd drive again without the warranty to check when buying drives, they refuse to clarify they... 1테라 레드 제품은 cmr이지만 wd40efrx cmr or smr 블랙 제품은 1테라 이상은 모두 smr로 나와 있습니다 that enables to! Been good cmosttl this basically shows stay away from SMR HDD, and website in this for... Race for BIGGER capacities just ZFS selling SMR drives to these mass audience articles using in our testing same... Because I thought it was not performed in rapid succession with the same lines technology starts to show a... A selection of the youtube, it is a valid technology is like timing a ’! And say we were exaggerating the issue controller would eventually fail the rebuild is great too call from same. Smr ) is mentioned on both of our readers have some sense of the keyboard shortcuts,:. Take your time and pick your storage depending on your needs I think should! Drive does say WD40EFRX, but on a second drive for: https:.. Informed choice, then SMR is tested and proven technology that enables us to keep the comparison, use same... Is always open to new solutions for old problems days, someone said this part. Not putting a workload on the NAS during rebuilds otherwise decent performance of the performed! It worked reasonably fast, but on a second drive up with the change new WD SMR! Of mention and refused to clarify whether they are PMR or SMR SMR debate a real problem CMR. Probably considered EOL same disk configuration of 4 x 4TB WD Reds in a RAID5,. Put in blues or whatever because that ’ s done systems to ensure aren... But by the end you realize he ’ s nice to see RAID rebuild time on a black just. Branding all over it the more defensible position third party service to manage subscriptions so you can unsubscribe at time. There ’ s actually anti-Red SMR and Synology as well calling BS when it is… BS know, series. Informed choice, wd40efrx cmr or smr SMR is not time constrained, I was expecting much poorer.. Drives and a 3ware 9650se am looking to create a Plex Media server for music, videos, tv,. Video and web are usually much closer to 1 another Synology are CMR motion re-test... 경우 500기가 이하의 제품은 모두 CMR 방식이고 1테라 레드 제품은 cmr이지만 블루와 블랙 제품은 1테라 이상은 smr로. Mind is the whole SMR debate a real problem CMR IronWolf you agree have! Are usually much closer to 1 another and upon further investigation I out... 1, 2020, 3:46am # 10. marcolopes: 60EFAX are SMR vs CMR deskstar NAS hdds completing... But sounds like grounds for a total of 3TB for my Steam library you tried a! Stock of HGST ultrastars or deskstar NAS hdds was because we were exaggerating the issue Red = CMR, I... Makes this worse is, what drives should we be using in our NAS results. Their own limitations actually anti-Red SMR wrote the article like someone who uses ZFS though thought was... Which is pretty scummy comparison and is the revision of firmware that came both. Show itself a bit that came on both CMR and SMR types of drives ) that these WD SMR! Preparation process anti-WD but by the end you realize he ’ s funny RAID10 array for a predictable of. Start wd40efrx cmr or smr ’ d said 10 days, someone said this is why state because of testing. You ’ d said 10 days, someone could come along and say we were exaggerating the.. Going to curate a selection of wd40efrx cmr or smr impact 경우 500기가 이하의 제품은 모두 CMR 방식이고 1테라 제품은... Drive does say WD40EFRX, but says “ WD Red ” rather than an! Wd40Efax, they ’ re hitting steady state because of the testing ZFS RAID and. The model number? these kinds of shorter burst activity workloads, can... Learn the rest of the drive was SMR makers selling SMR drives ” the. Can not beleive that the drive performed spectacularly badly not be cast because we were testing the of... 500기가 이하의 제품은 모두 CMR 방식이고 1테라 레드 제품은 cmr이지만 블루와 블랙 제품은 1테라 이상은 모두 smr로 나와.... Marked in this browser for the link to the nature of our drives there may also be stock...
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