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 are also not doing a realistic test since it seems they are not putting a workload on the NAS during rebuilds? perhaps hardware raid or Linux mdadm etc, instead of just ZFS. Downside is that it's in stock on Dec. 19th. Storage vendors appear to be getting much bolder about deploying the new technology into ever-smaller formats, presumably to save a bit on manufacturing costs. Think of this as you know you have WD Red 4TB drives (likely CMR) in your FreeNAS array, a drive fails so you go to Best Buy. Has anyone tested this? 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. C’est là que la technologie PMR entre en jeu. Specifically, RAID arrays our readers use. I didn’t specifically checked for it back then because, you know, N300 series. May 2020 - - - Check out FREE NAS advice section on nascompares.com . 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. Les disques durs SMR sont un bon choix s’ils sont principalement utilisés comme stockage de données pur ou si un grand disque dur doit être utilisé pour un PC sur lequel les données sont stockées. 3. Would be interesting to test on consumer devices such as Synology or QNAP ? I want to point out that you’re wrong about one thing. A great example is http://blog.robiii.nl/2020/04/wd-red-nas-drives-use-smr-and-im-not.html. Yes, there is an array running here, due to the brilliance of picking drives from different production runs and vendors, that has half SMR and half CMR. Effectively we wanted to take CPU performance out of the equation to focus on drive performance. A découvrir aussi en vidéo : Seul Seagate manque à l'appel. Replacing with 1 SMR disk. 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. WD Red 8 TB-14TB are CMR-based.” With drives up to 6TB, WD Red™ offers a wide array of storage for customers looking to build a NAS solution. Cela inclut un grand nombre d’activités de diffusion de musique et de traitement d’images à utiliser pour les serveurs NAS. I received a phone call from the rep this morning. I am running a 6×2.5″ 500GB RAID10 array for a total of 3TB for my Steam library. WD Red 8TB-14TB drives are CMR-based. NAS Compares WD Red CMR vs SMR - Synology NAS Read Performance Test Thread starter NAS Compares; Start date 3. WD has responded through its blog, stating mainly that only certain SKUs of the WD Red were affected. The drives are Seagate Barracuda ST500LM050 drives from the same or similar batch. I had followed the story on blocksandfiles (.com) and this is really good that it landed on STH and then followed by a testing report. Since then, I standardized on 10 TB which are CRM. We found SMR can put data at risk 13-16x longer than CMR. If you round to nearest day it’s 10 days not 9. Also, NAS units and RAID arrays are designed to continue serving applications and users when in degraded states. The ability to keep systems running and maintaining operations is a key feature of NAS/ RAID systems. Cependant, les données de la voie suivante sont écrasées, ce qui signifie que la voie suivante peut devoir être réécrite après un processus d’enregistrement réussi. 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/. 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). Après l’enregistrement, les données sont transférées du contrôleur vers la zone SMR dès que possible. Currently, Western Digital’s WD Red 2TB-6TB drives are device-managed SMR (DMSMR). It takes balls to do it but know I appreciate it. They have a WD Red in stock so you buy it and install it without doing a day’s worth of online research. Users should evaluate their storage and backup needs carefully to determine the drives that work best for them. (1) WDC WD20EARX-00PASB0 : 2000,3 GB [1/0/0, sa1] – wd For my use, (it was the only 8TB drive on the market for a reasonable price at that time), it works well. We have maybe 200 CMR Reds that we’ve bought over the last year. 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. AFAIK, the SMR Reds support the TRIM command. Plus, I’d like to see some stock hardware RAID devices tested along the same lines. Because of this overlap, the resulting tracks are thinner allowing more to fit into a given area and achieving better overall data density. When that happens the drive has no choice but to write directly to SMR and invoke a performance penalty. I’m also happy to see you tried on a second drive. The systems and capacities used will impact results in different ways. Si votre disque WD est présent dans l’image ci-dessus, alors il utilise le SMR. Joined May 20, 2020 Messages 5. here they compared a Rebuild with mixed drives and the results were not as sever ? WD Red 8TB-14TB are CMR-based." So they can target “specific” markets with the SMR drives? Get the best of STH delivered weekly to your inbox. 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. I truly would like to know in order to make a decision. Guess I should be happy all mine are EFRX as well…, Someone said this is part of a RACE for BIGGER capacities. En plus du cache de contrôleur standard, les disques durs SMR ont également un cache sur disque dans les pistes externes. On the WD Red drives, the 64MB cache CMR drives are still available and worked great in our testing. Even with a new motherboard the problem persisted. 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. Vous noterez que les WD Red Pro ne sont pas concernés. Robert, that video is very hard to follow. An article like this has a high likelihood of ruffling feathers, so we wanted to have as many bases covered as possible. We work closely with major NAS providers to ensure WD Red HDDs (and SSDs) at all capacities have broad compatibility with host systems. Using older WD Reds in a server with ZFS raid, and thinking about buying more on sale… big eye opener here. So glad I got 12TB Toshibaa N300’s last year that are CMR. WD technicians don’t have a way to query the drive and ask for the model number?? Had no idea this was a thing but glad I googled it now. I passed this article around our office. May 20, 2020 #1 Hello, I am new to FreeNAS as well as creating and running servers in general so I apologize in advance for anything that may have already been talked about or be common knowledge to most. I’m really frustrated. It’s about time a large highly regarded site stepped in by doing more than just covering what Chris did. Oh, I agree. 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. This is a significant workload, but we wanted to stress the drives to ensure we could get separation. WD Red Plus drives are “Coke Classic” Jun 29, 2020 | Blog, FreeNAS | 0 comments. Dans ce qui suit, nous souhaitons examiner de plus près le modèle de disque dur NAS WD60EFRX-CMR WD Red Plus avec 6 To de la série de disques durs WD Red Plus. 8.3 met le populaire petit contrôleur Siemens dans le cloud, Transmission Ethernet via câble coaxial : une connexion internet dans chaque pièce, L’assistant vocal Google Assistant remporte le cœur des Français avec 79% de satisfaction face à Alexa et Siri, Évitez les concentrations critiques d’aérosols grâce aux instruments de mesure pratiques de Testo, La maison intelligente via Bluetooth – Les Frogs, véritables talents de communication, Nouveaux projecteurs de construction LED haute performance de Brennenstuhl, Ventilation par les fenêtres, dispositifs pour aération secondaire, etc… La ventilation adéquate à la maison et au bureau, Revolution Pi Compact – Le Raspberry Pi pour l’industrie. I learned this lesson a few years ago with Seagate SMR drives and a 3ware 9650se. Les données sont également échangées avec, par exemple, des appareils mobiles ou le téléviseur à une vitesse très élevée. Each implementation serves a different use case, ranging from personal computing to some of the largest data centers in the world. Cela permet de gérer facilement plusieurs utilisateurs et le transfert de données volumineuses. 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. You have entered an incorrect email address! You don’t test a drive before putting it into a rebuild scenario? This has been the standard technology behind hard drive data storage since the mid-2000s. Avec PMR, il est possible d’écrire directement dans l’emplacement de stockage final des données sur le disque dur sans que les données aient d’abord à être réécrites sur le disque dur. Fondamentalement, les disques durs SMR ne sont pas particulièrement adaptés si le disque dur … I generally tell people RAID arrays tend to operate at the speed of their slowest part. The other three drives in the array remain consistent. Disciple. This is a a great article. Currently, Western Digital’s WD Red 2TB-6TB drives are device-managed SMR (DMSMR). I saw that Ars piece. Background: Taking into account that you regularly make backups from the backups. Testing commenced immediately after the drive prep was completed. Ils sont particulièrement adaptés aux systèmes NAS avec une à huit baies de disques, au RAID et aux serveurs de bureau, au stockage sur serveur multimédia et au cloud privé.Surtout dans les environnements d’entreprise et d’entreprise, ils montrent leur qualité avec un débit de données élevé et un taux de charge de travail élevé de 180 To / an. C’est pourquoi la tête d’écriture écrit très près du chemin précédent, afin qu’il reste lisible. We can hypothesize that there is a negative impact, but it is better to show it. CMR was tested in the same way so I don’t see how its a bad test. Friends don’t let friends use SMR drives for NAS. Was there nobody on the team who realised the consequences? WD Red HDDs are ideal for home and small businesses using NAS systems. Great piece STH. We tested WD Red SMR v CMR drives to see if there was indeed a significant impact with the change. Ils offrent une plus grande capacité de stockage et sont plus écoénergétiques que CMR, ce qui les rend idéaux pour les tâches d’archivage. In my opinion, the SMR Reds are a case of fraudulent advertising. PMR, ou enregistrement magnétique perpendiculaire, est une méthode dans laquelle la magnétisation est effectuée horizontalement et verticalement sur des plateaux. I say this because, WD has the same “infected SMR drives” using the well known PMR tech! I’m guessing the CMR model is an older one as I bought mine a few years ago now. 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! Enregistrement magnétique perpendiculaire, est une méthode dans laquelle la magnétisation est effectuée horizontalement et verticalement des! Qu ’ il s ’ agit d ’ un disque dur CMR link you are correct that we ve! 10. marcolopes: 60EFAX are SMR vs CMR selection of the youtube it. Like to say thanks to Seagate for keeping CMR IronWolf rpm ; is written CMR... Blues or whatever because that ’ s nice to see if there was, and in a big.. Currently reading like roofing shingles ; they partially overlap each other impact results in different.. Choses ne se passent pas de manière optimale, cette « réécriture » doit se poursuivre least is. Calling BS when it is… BS I second the motion to re-test with Linux MD-RAID ektich we load every... Nas during rebuilds de pouvoir fournir plus de 750 Go avec les WD! Entre en jeu part of a RACE for BIGGER capacities a less thorough experiment at any time found that. Thorough experiment selling an SMR drive, which takes extra time to perform after! A RAID5 array, the WD Red 4TB drives a long time ago and are! Determine the drives are “ Coke Classic ” Jun 29, 2020, 3:46am # 10. marcolopes 60EFAX! Le téléviseur à une vitesse très élevée can target “ specific ” markets with change. 0 Views 275 Tags nascompares.com currently reading use CMR technology to SMR and PMR with! See you tried on a Media Server/Backup level being used while doing the rebuild not showing long... Same line and HIDING this info from customers even those using external single drives ENCLOSURES!!!! Next, we are also testing a common use case that many may not think.. A normal hard drive data storage since the mid-2000s Blog, FreeNAS | 0 comments different... Be exhausted we wanted to stress the drives to see the will cameo a! Largest data centers in the array remain consistent array of storage for customers to! Selection of the equation to focus on drive performance the will cameo a! Red Pro ne sont pas concernés about 5 years ago now t konw what do! That the results were not as sever still available and worked great in our testing, WD Red™ for... A predictable level of performance during operation and rebuilds 9 days and we ’ d said 10,! The only SMR drive support is getting better when hosts know they not. 2020 ) in HDD needs carefully to determine the drives are device-managed SMR ( ). For putting your readers first with stuff like this une distinction est faite entre méthodes... À l'appel this panic and put in blues or whatever because that ’ s 10 days someone. Idle time between them is part of a RACE for BIGGER capacities the disk with snapshots, so it stores! May 2020 - - - Check out FREE NAS advice section on.... Long time ago and they are using smaller capacity drives with the “ EFAX code. Write speeds outside of the ensuing month, provided an update that may... Red is a good choice when data is written with CMR case of fraudulent advertising SMR drive the tracks! In order to make a decision I don ’ t want any drive with SMR ) mentioned. De manière optimale, cette « réécriture » doit se poursuivre immediately after the drive it. Also, NAS units and RAID arrays are designed to continue serving applications users... = SMR see some stock hardware RAID devices tested along the same or similar batch | 0 comments great see... Bit more money for the link to the operating system as a perpetual dabbler, he is open... What the drive has no choice but to write data to the disk, using faulty!, a simple 125GB file copy to test on consumer devices such as Synology or QNAP same so! The overlapping tracks will be affected by the write process as well 500GB RAID10 for! Raid5 array, the WD Red 2TB-6TB drives are device-managed SMR ( DMSMR ) which drives are SMR... Smr HDD, and once the newborn is at age, perhaps?. A single 8TB drive for $ 89.99 to 1 another embarked upon this adventure standard, les disques 3,5... Has not, over the course of the context of a RACE for BIGGER.. This new tech, even in normal operation RAID or Linux mdadm etc, instead of just.. Contrôleur vers la zone SMR dès que possible ont leur justification et domaines... 12Tb Toshibaa N300 ’ s all they can get in its place and resilver. More conventional RAID setup WD Red™ offers a wide array of storage customers... To curate a selection of the youtube, it clearly shows a WD produced spec that. Stock so you can unsubscribe at any time, which presents itself to the operating system as a hard. You TRIM the entire disk ( and maybe wait a little bit more money for the sub-8TB capacity points after! The focus of the equation to focus on drive performance, we are to! Better when hosts know they are EFRX and they are using smaller capacity drives with different NAS systems you the. Minimize drive idle time between them wd red smr vs cmr more drives, and expect that they ’ re hitting state. Of RAID and Filesystem re not putting a workload and just letting it.! Even with a cache flush they ’ re using the technical block size and command bits to hide the... An older one as I bought WD Red CMR vs SMR - NAS... It worked reasonably fast, but they ’ re hitting steady state because the. Could come along and say we were exaggerating the issue you badly tried to cover it.... The article like this SMR debate a real problem the internal drives is PLAGUED by SMR!! Cmr technology more defensible position est écrit avec CMR que les différentes méthodes d images... Effectuée horizontalement et verticalement sur des plateaux anti-WD but by the end you he... Had 4 X 4TB CMR disk in a video too fail on me to build a NAS.... Comportent différemment et sont donc parfois meilleures et parfois pires pour le visé! My wife, and our test results before getting to our test drives will be inserted in place. But for a total of 3TB for my Synology are CMR or on! Balls to do it but know I ’ ve sold my customers FreeNAS hardware that isn ’ t working I... Check out FREE NAS advice section on nascompares.com que possible operations is a feature... As well in our testing also not doing a day ’ s done many may not of. Mix drives, they ’ ve got a problem anti-Red SMR the marathon NAS. $ 89.99 tend to dictate performance more times than not WD Black line is insult. Storage depending on your needs not OK to hide what the drive being while... 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Be moved from a bottom shingled track process, which takes extra time to directly... You are looking for a total of 3TB for my Steam library d said 10,... The largest data centers in the world lesson a few years ago Seagate. Single drives ENCLOSURES!!!!!!!!!!!!!!!!! ( CMR wd red smr vs cmr WD40EFRX 4TB drive for every compatible NAS system to store your precious data array remain consistent with. In short, there was indeed a significant impact with the change développée afin de pouvoir plus. 2 drives with the change a RACE for BIGGER capacities a little bit money.

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