this post was submitted on 03 Jan 2026
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Best Used SAS Drives? (4TB) (lemmy.zip)
submitted 6 days ago* (last edited 5 days ago) by rook@lemmy.zip to c/selfhosted@lemmy.world
9 comments fedilink hide all child comments
 

Hey all,

I am in need of replacing a faulty 4tb drive in my SAS NAS.

It needs to be a 4tb SAS drive.

There are many good deals on ebay for used 4tb drives.

What should I get to eventually replace all 6 of my 4tb SAS drives?

My Current Drives:

X477_SMEGX04TA07

ST4000NM0023

ST4000NM0023

ST4000NM0023 (faulty)

ST4000NM0023

X477_SMEGX04TA07

I'm currently debating between getting

Seagate 4TB 7.2K SAS 6Gb ST4000NM0023 Constellation ES.3 NetApp 108-00315-A0

or

Seagate Enterprise 4TB 7.2K 12G 3.5" SAS HDD ST4000NM0025 1V4207-037

or

Is there better 4tb SAS drives than segate? (HGST, WD, Toshiba, Dell)?

(Assuming SAME price for 4tb SAS drive)

Thoughts?

Thanks for the help!

(I should probably order a replacement asap....)

Edit: the for all the replies. So y'all agree Seagate is the best option ?

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[–] non_burglar@lemmy.world 6 points 5 days ago

One is sas6gb/s and the other is sas12gb/s, as someone else pointed out.

You will be hard-pressed to make those drives make use of sas12g. I have them and I've beaten them up with various workloads, but I could not justify their use beside sata3. Cost-for-cost, even accounting for the better SAS ncq and smart data, spinning rust at those transfer speeds only make sense if you have the demand of many hundred users or more, which homelab almost certainly isn't.

The reason not to get them is that they draw substantially more power per disk than sata3 disks.

[–] Shadow@lemmy.ca 5 points 6 days ago (1 children)

One is 6gb sas and the other is 12gb.

You probably won't notice a difference

[–] Shdwdrgn@mander.xyz 1 points 5 days ago (2 children)

Honestly, are there any HDDs that can really reach 6gb/s speeds? I haven't seen any that could reach 3gb/s. My current array is all running on SATA-2 backplanes, but with 8 drives in the raid it clocks out at 460MB/s sustained (bytes, not bits). Considering my previous NAS could barely reach 70MB/s on a 6-disk array, I was quite pleased with the new setup.

[–] Ajen@sh.itjust.works 4 points 5 days ago

12gbps could be useful if you use port expanders to put dozens of drives on the same port, but without a port expander you're right you wouldn't saturate the 6gbps channel.

[–] Shadow@lemmy.ca 2 points 5 days ago* (last edited 5 days ago)

Imagine a disk shelf of 24 drives being connected by a pair of sas loops. You'd want the faster speeds then. It's not about individual drives.

[–] Squizzy@lemmy.world 2 points 5 days ago (1 children)

What is SAS NAS?

I can only see analytics software or SAN/NAS when I search for this.

[–] eutampieri@feddit.it 5 points 5 days ago (1 children)

SAS stands for Serial Attached SCSI, a high-end alternative to SATA

[–] Squizzy@lemmy.world 2 points 5 days ago

Thanks

[–] SpikesOtherDog@ani.social 1 points 6 days ago

I think I might have one I can't use. Might be 2 TB.

I bought it as an experiment to use with my NAS, but my SAS card is running in SATA mode and won't recognize it with an adapter.

If you or someone wants to have me ship it to you (you pay postage and send me the pdf for the label) PM me.