On Wed, 3 Aug 2011, Dan Ritter wrote:
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....@blu.org [mailto:discuss-
bounces+blu=nedharvey....@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.
How effective is this block? It makes you get a special SAS cable to plug
into the drive, but doesn't the controller end of the special cable plug
into either a SAS or SATA controller? After all, the SAS controller port
has to accept either cable, because it always supports both types of
drives.
Dan Feenberg
Sorry for the confusion.
-dsr-
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