[Discuss] SAS drives

[dsr at tao.merseine.nu (Dan Ritter)]

On Wed, Aug 03, 2011 at 11:09:09AM -0400, Daniel Feenberg wrote:
> 
> 
> On Wed, 3 Aug 2011, Dan Ritter wrote:
> 
> >On Wed, Aug 03, 2011 at 10:05:55AM -0400, Edward Ned Harvey wrote:
> >>>From: discuss-bounces+blu=nedharvey.com at blu.org [mailto:discuss-
> >>>bounces+blu=nedharvey.com at blu.org] On Behalf Of Dan Ritter
> >>>
> >>>This is bizarre. SATA and SAS use the same cabling,
> >>
> >>Sometimes true, sometimes not.
> >>I have a Sun server X4275 which has a mixture of SATA and SAS drives in it.
> >>No problem.
> >>Later I bought an Oracle server X4270 (yes, the later model has a lower
> >>number, go figure.)  It has only SAS drives, and the connector is different.
> >
> >Can you describe the connector? And is it on the drives, or on a
> >backplane?
> 
> In my case the socket on the drive has a bit of plastic that
> prevents an ordinary SATA cable from plugging in. The drives are
> Seagates. It does look to me like a cable connector could be
> constructed that would work in both types of drives, but none of the
> various SATA cables I have are so constructed.

Oh, OK. Yes, SAS controllers can talk to SAS or SATA drives, but
SAS drives have a block so that only SAS controllers can talk to
them. 

Sorry for the confusion.

-dsr-


-- 
http://tao.merseine.nu/~dsr/eula.html is hereby incorporated by reference.
You can't fight for freedom by taking away rights.