Replacement SAS drives for TrueNAS Scale

[aerospyke]

Hi all,

I bought a supermicro device to be my NAS, media storage and backup target for my ESXi VM's (no ESXi workloads run from this machine). I've been getting flags and issues from SMART on two of my disks and in case it's not just the SMART reports flagging incorrectly in GUI due to interrupted runs, I want to get another spare or two.

Enter problem. They are Seagate EXOS 8TB SAS drives, that I can't seem to source here in Australia. SATA yes, SAS no. I tried to look up the warranty of the devices on the Seagate website but it complained the serial number was not found so that was a bust.

Does anyone have a recommendation for replacement? 8TB and SAS are pretty much my only requirements, other than it fits in well with the existing disks in terms of performance characteristics.

Ta

 

[ChrisRJ]

For general information, please check out this

Don't be afraid to be SAS-sy ... a primer on basic SAS and SATA

With the introduction of SAS 12Gbps, seems like "it's time" to do a braindump on SAS. Work in progress, as usual. History By the late '90's, SCSI and PATA were the dominant technologies to attach disks. Both were parallel bus multiple drop...

www.truenas.com

In addition, it would help if we knew exactly what hardware you have.

 

[aerospyke]

For general information, please check out this

Don't be afraid to be SAS-sy ... a primer on basic SAS and SATA

With the introduction of SAS 12Gbps, seems like "it's time" to do a braindump on SAS. Work in progress, as usual. History By the late '90's, SCSI and PATA were the dominant technologies to attach disks. Both were parallel bus multiple drop...

www.truenas.com

In addition, it would help if we knew exactly what hardware you have.

I've read this, I understand, more thinking of what I should be looking at... Do you need the backplane specific to my device in sig as well? Happy to give as much info as helpful

 

[ChrisRJ]

Is there a specific reason that you want SAS drives?

 

[aerospyke]

Is there a specific reason that you want SAS drives?

Thanks ChrisRJ, this was purely a situation of "i have a broken thing, I need another of it to replace it with" .... without actually thinking. No I don't need SAS, which opens up a fair few other options

Seagate EXOS ....could just as easily be ironwolf pro
WD Red Pro as well.

That being said, I don't know other options besides those, and the exos vs ironwolf pro is negligible to me, in fact I can get the exos sata devices for cheaper than the ironwolf.

Thoughts?

 

[aerospyke]

For anyone out there, I ended up buying the Exos over the ironwolf. It was cheaper, longer warranty, apparently better stats like MTBF etc. I couldn't see a downside.

 

[JeffNAS]

Is there a specific reason that you want SAS drives?

Why would you not want 12gb/s over 6 if your server has the available performance and has 2.5G or 10G nics?

 

[danb35]

Why would you not want 12gb/s over 6

Because the drives can't come close to saturating even 6 Gbps, let alone 12.

 

[JeffNAS]

Because the drives can't come close to saturating even 6 Gbps, let alone 12.

What if the drives are ssd's?

 

[danb35]

They weren't in this case. But if they were, yes, it's possible you'd get better performance from a SAS SSD than from a SATA SSD. You'd also pay far more for it, of course.