28TB Seagate External HDD (STKP28000400) $319.99 + Free Shipping

Nec89

Yesterday

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Joined Nov 2017

Yesterday

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I'm guessing that at the present date Seagate is making such large drives using SMR instead of CMR so they aren't worth shucking? Can anyone confirm if these are SMR or CMR?

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RikB

Yesterday

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Joined Sep 2013

Yesterday

RikB

Yesterday

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Our community has rated this post as helpful. If you agree, why not thank RikB

Quote from Nec89

:

I'm guessing that at the present date Seagate is making such large drives using SMR instead of CMR so they aren't worth shucking? Can anyone confirm if these are SMR or CMR?

Everything I've seen indicates the 20,24,28 tb are CMR drives. Seagate doesn't offer the 28tb outside this enclosure as far as I'm aware. Its speculated that these are binned Exos drives, so they follow the same specs (7200rpm, HAMR CMR) but different firmware and less cache. They have the class 1 laser warning on the label which should confirm HAMR. The only high capacity drives that use SMR are the Exos 32tb and 36tb as of right now.

I have a Barracuda 24tb shucked from one of these in a NAS since February, no issues. It's in a storage pool with 2 other Exos 24tb and didn't degrade the performance/is operating at the same temp. I also have this 28tb still in its enclosure that I'm using to backup the NAS biweekly. It works fine but does run hot in that enclosure. Averages 53c vs the 24tb in the NAS running at 32c.. I'm using it as cold storage so I'm not too concerned, but if it were on all the time I'd probably put a fan on it.

Edit: https://www.seagate.com/content/d...-en_US.pdf

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1

saranya

Yesterday

952 Posts

Joined Dec 2005

Yesterday

saranya

Yesterday

952 Posts

Quote from RikB

:

Everything I've seen indicates the 20,24,28 tb are CMR drives. Seagate doesn't offer the 28tb outside this enclosure as far as I'm aware. Its speculated that these are binned Exos drives, so they follow the same specs (7200rpm, HAMR CMR) but different firmware and less cache. They have the class 1 laser warning on the label which should confirm HAMR. The only high capacity drives that use SMR are the Exos 32tb and 36tb as of right now.I have a Barracuda 24tb shucked from one of these in a NAS since February, no issues. It's in a storage pool with 2 other Exos 24tb and didn't degrade the performance/is operating at the same temp. I also have this 28tb still in its enclosure that I'm using to backup the NAS biweekly. It works fine but does run hot in that enclosure. Averages 53c vs the 24tb in the NAS running at 32c.. I'm using it as cold storage so I'm not too concerned, but if it were on all the time I'd probably put a fan on it.Edit: https://www.seagate.com/content/d...-en_US.pdf

can you check the diskinfo (CrystalDiskInfo or HD Sentinel) of the 24TB? It should identify the exact model / make of the drive even though it's in the enclosure.
Inconclusive rddt thread: https://www.reddit.com/r/DataHoar..._and_28tb/

MWink

8h ago

2,048 Posts

Joined Oct 2011

8h ago

MWink

8h ago

2,048 Posts

Quote from Nec89

:

I'm guessing that at the present date Seagate is making such large drives using SMR instead of CMR so they aren't worth shucking? Can anyone confirm if these are SMR or CMR?

They should be HAMR CMR drives. I'm not aware of any DM-SMR drives anywhere near this capacity. There are HM-SMR drives but those aren't going to consumers. It's definitely going to be HAMR. Seagate's largest non-HAMR CMR drive is 24TB (I think 26TB for SMR).

Squirrels8MyLunch

8h ago

1,144 Posts

Joined Jan 2016

8h ago

Squirrels8MyLunch

8h ago

1,144 Posts

enough of the BS tech talkz is this a reliable drive or not being CMR

4

MWink

8h ago

2,048 Posts

Joined Oct 2011

8h ago

MWink

8h ago

2,048 Posts

Quote from RikB

:

Everything I've seen indicates the 20,24,28 tb are CMR drives. Seagate doesn't offer the 28tb outside this enclosure as far as I'm aware. Its speculated that these are binned Exos drives, so they follow the same specs (7200rpm, HAMR CMR) but different firmware and less cache.

My theory is that Seagate repurposed the production line that made the prior generation HAMR Exos to make the new Barracudas. Many of the specs are identical. That generation of Exos never had a retail release. They only made it into the hands of consumers through resellers of recertified drives. I think it's less likely that the Barracudas are binned versions of the new Exos, as the specs are different.

RikB

7h ago

313 Posts

Joined Sep 2013

7h ago

RikB

7h ago

313 Posts

Quote from saranya

:

can you check the diskinfo (CrystalDiskInfo or HD Sentinel) of the 24TB? It should identify the exact model / make of the drive even though it's in the enclosure.
Inconclusive rddt thread: https://www.reddit.com/r/DataHoar..._and_28tb/

24TB is ST24000DM001
28TB is ST28000DM000

1

28TB Seagate External HDD (STKP28000400) $319.99 + Free Shipping - Seagate.com

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