Re: [gentoo-user] Seagate ST8000NM0065 PMR or SMR plus NAS SAS SATA question

[Daniel Frey <djqfrey@gmail.com>]

On 5/10/20 1:02 AM, Dale wrote:
> Hi Michael,
> 
> I think it is too.  Your link shows about what the link I was looking at 
> does.
> 
> I did research the SATA and SAS connector issue again.  Seagate has a 
> picture of both for comparison and the drive I was looking at is a SAS 
> drive.  When I did more research, it seems you can connect a SATA drive 
> to SAS but not a SAS drive to SATA, unless that has changed since the 
> site I found posted about it.  Either way, while it does seem to be PMR, 
> I don't want to chance it not working since it is a SAS drive.  I need 
> to weed out SAS type drives unless I want to buy a SAS drive controller 
> card as well, to be certain it will work.  For those curious, this is a 
> link that shows a picture.  One has to look closely because at a glance, 
> they look a LOT alike.
> 
> https://www.seagate.com/support/kb/connecting-sata-drive-to-sas-controller-006170en/
> 
> 
> SATA drives may be plugged into SAS controllers.
> 
> SAS drives cannot be plugged into SATA controllers.
> 
> 
> Back to digging and waiting for a good deal.
> 
> Thanks much for the help.  :-D

That drive is a SAS drive and they use a generic photo of a hard drive - 
don't rely on those. That line of hard drives offer both SATA and SAS 
drives dependent on model.

They aren't compatible with SATA controllers.

And yes, SATA drives can be used on a SAS controller - I've been running 
that configuration on my file server for about 12 years.

Dan