this post was submitted on 28 Oct 2023
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Options for 2.5" SATA CMR spinning drive in 2023? (alien.top)
submitted 2 years ago by csdvrx@alien.top to c/datahoarder@selfhosted.forum
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I'm looking for non-shingled spinning 2.5" SATA drives

  • due to data storage policies, it must NOT be a SSD but a spinning drive
  • due to the use of ZFS, it can't be a SMR
  • 1Tb or more (2Tb would be nice)
  • ideally 9.5 mm or thinner (7mm would be preferred for a better airflow, 15 mm would require a 3d-printed cover)
  • ideally new (new-old stock and used drives would require a few days of testing to validate the SMART info and the absence of bad sectors)

I've heard the WD Blue 2.5" and the Seagate Exos might be valid options:

If you know about other options, could you please list them?

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[โ€“] Far_Marsupial6303@alien.top 1 points 2 years ago (1 children)

The only manufacturers left are WD/HGST, Seagate and Toshiba

There's a couple of 1TB drives from Toshiba, but they're hard to find and expensive.

The 2.5" Exos E are available in 1TB-2TB in SATA and 600-2.4TB in SAS. But AFAIK, they all require the additional 12V power like 3.5" drives. And it seems they're both 15mm according to the specs:

https://www.seagate.com/content/dam/seagate/migrated-assets/www-content/product-content/enterprise-hdd-fam/enterprise-capacity-2-5-hdd/en-us/docs/100827452b.pdf

As Sopel97 stated, the 1TB Blue is SMR. There was a 1TB WD Red NAS CMR drive, but it seems to be discontinued.

2TB CMR in a 9.5mm form isn't possible because the largest 2.5" CMR platter is 600GB, so at least four 500GB platters would be required for 2TB.

Read here for more info about the platters in 2.5" and 3.5" drives.

Bottom line, your choices are Toshiba or old/used drives.

[โ€“] csdvrx@alien.top 1 points 2 years ago

There's a couple of 1TB drives from Toshiba, but they're hard to find and expensive.

If they cost less than $500/drive, price will not be a problem

Would you have the reference or model number for these Toshibas?

There was a 1TB WD Red NAS CMR drive, but it seems to be discontinued.

Likewise, would you have the reference or a model number for the WD Red?

Read here for more info about the platters in 2.5" and 3.5" drives.

You may have forgotten a link?