On 06/26/2012 03:01 PM, Roy Sigurd Karlsbakk wrote: > Hi all > > Seems Garrett D'Amore from Nexenta has a few things to say about using SATA > drives in SAS systems > > http://gdamore.blogspot.no/2010/08/why-sas-sata-is-not-such-great-idea.html > > The digest is "Just don't do it"…
Couldn't agree more. Big-name endors (like Sun/Oracle, Dell, HP, etc.) need to test each SATA firmware revision they ship for storage products and often modify it to make it behave more normally. Sun (and other vendors possibly too) put a small interposer board between the SATA drive and the SAS expander back-plane in enclosures to make sure this multi-protocol joyride was going well (most of the time). In my experience, SATA drives just aren't worth it. Looking at e.g. Seagate Constellation ES.2 drives in SATA vs SAS varieties, the price difference is only a few dolars (depending on dealer), so it just isn't worth the gamble. Plus, SAS is dual-port and multi-path often allows for better use of the new drive's rather large caches (64MB+) by being able to satisfy a read from cache while a write is going on. -- Saso _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
