this post was submitted on 27 Nov 2023
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We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
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WD Blue 8TB is a CMR drive and just as good as any NAS drive. But I'd avoid any consumer grade hard drives 8TB and under:
+1
You've listed all the 3.5" consumer drives. Though WD Red is listed as a NAS drive.
Barring an unfounded conspiracy, there is no >8TB DM-SMR drive drives. There are >8TB HM-SMR drives in the NAS and Enterprise lines, but they require specialized hardware and software.
In addition for completeness, all consumer 2.5" Seagate and WD drive >500GB are SMR. The 9.5mm Toshiba L200 1TB is CMR, but the 7mm model is SMR.
I know CMR vs SMR but what is HM/DM?
Also, I have a couple of those “Max Digitsl Data” drives, 4 & 10TB. Do you happen to know which those are?
DM is death match. HM is a clothing brand (Hennes & Mauritz)
DM-SMR is Drive Managed-SMR. All the write/read activity is handled by the onboard electronics.
HM-SMR is Host Managed-SMR. All write/read activity is handled by specialized external hardware and software. They're far from the capabilities of most home users today.
The current 26TB WD Ultrastar and upcoming 28TB WD drives are HM-SMR. The upcoming 30TB Seagate is also HM-SMR.
https://www.reddit.com/r/DataHoarder/comments/13z7w96/lets_discuss_dmsmr_hmsmr_hasmr_and_dropbox/
https://www.reddit.com/r/DataHoarder/comments/146hb9k/information_about_cmr_to_smr_manufacturer/
Your MaxDigitalData (MDD) drive is likely CMR because they're almost surely used enterprise drives. However, be careful as there was a user whose drive was HM-SMR and unusable.
MDD is a division of GoHardDrive and IMO, are drives that GoHardDrive doesn't want to sell under their own name. Also Avolusion (externals) is a division of GoHardDrive and has been reported to contain used drives.