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Is there a list of known not SMR WD RED drive model numbers? I have 4TB REDs in my Synology but they are a few years old; is there a way I can find out?

by d4rti 6y ago

moviuro 6y ago
> the EFRX is the faster CMR drive, and the EFAX is the much slower SMR drive. From https://arstechnica.com/gadgets/2020/04/caveat-emptor-smr-disks-are-being-submarined-into-unexpected-channels/ https://arstechnica.com/gadgets/2020/04/caveat-emptor-smr-di...
DavidVoid 6y ago
Here is a list of known SMR drives [1]. The newer WD##EFAX ones are SMR but if your drive is a few years old then it's probably a WD40EFRX which is NOT a SMR drive. [1] https://www.ixsystems.com/community/resources/list-of-known-smr-drives.141/ https://www.ixsystems.com/community/resources/list-of-known-...
- d4rti 6y ago
  Thanks, it's the EFRX.
- phire 6y ago
  Except only the EFAX drives with 6TB or less capacity. The 8TB and larger drives use the exact same WD##EFAX model number, but aren't SMR.
- nonninz 6y ago
  Looks like my RAID NAS at home is safe (from this at least) then. Thank you :)
Silhouette 6y ago
Based on the reports a week or so ago: Earlier models (WDx0EFRX) were not SMR. Newer ones (WDx0EFAX) are, up to 6TB.
spartas 6y ago
There are various lists all over the interwebs. It will be interesting to see the manufacturers responses in market segmentation and product lines in the future. > The easiest way to detect whether it is a SMR drive is the cache size. Old drives (WDx0EFRX) had 64MB cache whereas new replaced drives (WDx0EFAX) feature 256MB. This information will become less useful as newer drive models come out and cache sizes for non-SMR drives are bumped up. Source: https://nascompares.com/answer/how-to-tell-a-difference-between-dm-smr-and-non-smr-cmr-drives-hdd-compare/ https://nascompares.com/answer/how-to-tell-a-difference-betw...
deleted 6y ago
[deleted]
RealStickman_ 6y ago
This site has a filter for Recording process: https://skinflint.co.uk/?cat=hde7s https://skinflint.co.uk/?cat=hde7s You could also enter your harddrive model number in the search bar and have a look at the recording process there. Note: I have no idea how accurate the information is for every hdd out there, but it does seem accurate with the three hdds I have (that are relatively recent). The models I looked at are: Seagate ST2000DM008 (SMR) WesternDigital WD10EACS (CMR) Toshiba HDWD130UZSVA (CMR)
jlgaddis 6y ago
You probably have the WD40EFRX models, same as me. AFAICT, we're safe.

Is there a list of known not SMR WD RED drive model numbers? I have 4TB REDs in my Synology but they are a few years old; is there a way I can find out?

by d4rti 6y ago

Is there a list of known not SMR WD RED drive model numbers? I have 4TB REDs in my Synology but they are a few years old; is there a way I can find out?

moviuro 6y ago

> the EFRX is the faster CMR drive, and the EFAX is the much slower SMR drive. From https://arstechnica.com/gadgets/2020/04/caveat-emptor-smr-disks-are-being-submarined-into-unexpected-channels/ https://arstechnica.com/gadgets/2020/04/caveat-emptor-smr-di...

DavidVoid 6y ago

Here is a list of known SMR drives [1]. The newer WD##EFAX ones are SMR but if your drive is a few years old then it's probably a WD40EFRX which is NOT a SMR drive. [1] https://www.ixsystems.com/community/resources/list-of-known-smr-drives.141/ https://www.ixsystems.com/community/resources/list-of-known-...

d4rti 6y ago
Thanks, it's the EFRX.
phire 6y ago
Except only the EFAX drives with 6TB or less capacity. The 8TB and larger drives use the exact same WD##EFAX model number, but aren't SMR.
nonninz 6y ago
Looks like my RAID NAS at home is safe (from this at least) then. Thank you :)

Silhouette 6y ago

Based on the reports a week or so ago: Earlier models (WDx0EFRX) were not SMR. Newer ones (WDx0EFAX) are, up to 6TB.

spartas 6y ago

There are various lists all over the interwebs. It will be interesting to see the manufacturers responses in market segmentation and product lines in the future. > The easiest way to detect whether it is a SMR drive is the cache size. Old drives (WDx0EFRX) had 64MB cache whereas new replaced drives (WDx0EFAX) feature 256MB. This information will become less useful as newer drive models come out and cache sizes for non-SMR drives are bumped up. Source: https://nascompares.com/answer/how-to-tell-a-difference-between-dm-smr-and-non-smr-cmr-drives-hdd-compare/ https://nascompares.com/answer/how-to-tell-a-difference-betw...

deleted 6y ago

[deleted]

RealStickman_ 6y ago

This site has a filter for Recording process: https://skinflint.co.uk/?cat=hde7s https://skinflint.co.uk/?cat=hde7s You could also enter your harddrive model number in the search bar and have a look at the recording process there. Note: I have no idea how accurate the information is for every hdd out there, but it does seem accurate with the three hdds I have (that are relatively recent). The models I looked at are: Seagate ST2000DM008 (SMR) WesternDigital WD10EACS (CMR) Toshiba HDWD130UZSVA (CMR)

jlgaddis 6y ago

You probably have the WD40EFRX models, same as me. AFAICT, we're safe.