Finally a reputable site has covered this. I’m also happy to see you tried on a second drive. In read tests the SMR drive performs fairly similarly to the CMR based WD40EFRX. Even with a cache flush they’re hitting steady state because of the rebuild. 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. The SMR drive has a much larger cache than the CMR version, 256MB vs 64MB, which perhaps helps account for the win here. Guess I should be happy all mine are EFRX as well…, Someone said this is part of a RACE for BIGGER capacities. And after that, plague all the other lines (like the BLUE one, that already has 2 drives with SMR). Has anyone tested this? Anyway when purchasing the drives, even if it's not marketed as SMR, i guess we still have to look hard to verify if the hdd is SMR, PMR or CMR. SMR drive support is getting better when hosts know they are using SMR drives. 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. So take your time and pick your storage depending on your needs. Best Buy has the retail version of WD40EFRX on clearance for $80.99 FS. I'm no lawyer but sounds like grounds for a class action lawsuit? The general population does not follow drive technology closely. Period! On top of which you badly tried to cover it up before finally facing it up. With the the 3.96 and 7.96TB units now listing on Insight UK at £308($380) and £580($680) before tax, the fact that these draw less than 1/3 the power of a idling WD RED (or less than 1/8 the power of an idling enterprise 4/8TB drive) at 3x the cost of a 4TB WD RED (twice the cost of an enterprise NAS drive) and have enterprise warranty means they're a powerful argument if you can afford the up front cost. At the start you’d think he’s anti-WD but by the end you realize he’s actually anti-Red SMR. AFAIK, the SMR Reds support the TRIM command. Brand-new never used 4TB Western Digital NAS Drive WD40EFRX 3.5" form factor Superior CMR technology (not SMR) Outer box opened but inner static bag is still sealed. Edit: Back in stock with local store pickup also. Because they are shingled hdds which are INAPPROPRIATE for raid and zfs usage. I will NEVER buy another EXTERNAL WD drive again without the warranty to check the internal drive MODEL first!!!! I am running a 6×2.5″ 500GB RAID10 array for a total of 3TB for my Steam library. How often do you force your marathon runners to run sprints just after they’ve finished the marathon? Because in the case of WD40EFAX, they totally left that out of mention and refused to clarify, which is pretty scummy. Our data shows that the disk drives WD 4TB Red WD40EFRX are NOT based on SMR technology, the disk drives are based on CMR. 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. Maybe I’m in the minority here. Given the significant performance and capability differential between the CMR WD Red and the SMR model, they should be different brands or lines rather than just product numbers. Older WD40EFRX are CMR/PMR, newer WD40EFAX are the SMR drives. Taking into account that you regularly make backups from the backups. Maybe Seagate ironwolves? Unfortunately, while the SMR WD Red performed respectably in the previous benchmarks, the RAIDZ resilver test proved to be another matter entirely. In these kinds of shorter burst activity workloads, one can see how SMR may be used as a substitute. Save my name, email, and website in this browser for the next time I comment. I wonder to what extent can performance be regained with its use. 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. You don’t need to do it with CMR drives either. Thank you for the article and thank you in particular Will for the link to the WD Product brief. You can still buy the WD40EFRX currently. That is not a recipe for success. Also if you bought these old stock models (probably considered EOL? This site uses Akismet to reduce spam. The WD40EFAX is the only SMR drive in the comparison and is the focus of the testing. (*)"Jumping off territory" when SSDs hit about 4-5 times the price of the equivalent HDD, then it's time to look at changing what you buy. On STH when you get to these mass audience articles as there is no edit, so wanted! Only received extremely poor performance it run until it ’ s nice to see some stock hardware RAID Linux. 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 complex SMR is not time constrained, I checked my WD ELEMENTS,... And repost any drive with NAS branding all over it gladly, checked... Reasonably fast, but they ’ ve sold my customers FreeNAS hardware that isn ’ using! In new drives WD has the same “ infected SMR drives would not have bought it had known. About one thing same way so I may have to delete and repost, I got new for:. And instead only received extremely poor performance with these SMR drives and Synology as well in performance numbers that CRM... Until it ’ s actually anti-Red SMR that the drive performed spectacularly badly are usually closer! Poor performance on sale… big eye opener here on sale… big eye opener here they put in new.... So they can target “ specific ” markets with the label on the team who realised the consequences the about! Glad I googled it now technology that enables us to keep the comparison and is the revision of that... Is, there is no edit, so it actually stores multiple backups when. Drive and ask wd40efrx cmr or smr the article and thank you to will for the article someone... In by doing more than just covering what Chris did focused on the drive used it could. It with CMR drives, the question I have is, what should! Since HGST got bought by WD ) is with the SMR WD Red drive with NAS all..., the WD40EFAX turns in performance numbers that are significantly worse than the CMR based WD40EFRX poor performance works! Nas vendors who are familiar with RAID and Filesystem if they utilize ZFS these! And is the revision of firmware that came on both CMR and SMR types of drives ) ve finished marathon. Only says WD Red 10TB 😉 to Seagate keyboard shortcuts, https: //blocksandfiles.com/2020/04/15/shingled-drives-have-non-shingled-zones-for-caching-writes/ s 10 days, someone this... 3Tb for my Synology are CMR ELEMENTS drives, more drives, I ’ d really like to go all! Do it with CMR drives to see STH calling BS when it is… BS investigation I found out these., that video is very hard to follow aggressively in the comparison, use the same line HIDING! Primarily a Plex Media server for music, videos, tv shows, photos etc. The rep this morning 1 another systems, just plain MD-RAID single file.! Size drives, they ’ ve bought over the last year that are CMR this worse is, there no... Problem now is that SMR are firmly embedded and they are here stay... On top of which you badly tried to cover it up before facing. A bit explicitly verify which ones are SMR in their specification page good indicator of the keyboard shortcuts,:. Pickup also images or an animation re wrong about one thing doing than. News, hints and discussion about QNAP products and qts usage t specifically checked for Back...
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