On Wed, Feb 2, 2011 at 11:15 PM, Greg Smith <greg@xxxxxxxxxxxxxxx> wrote: > Scott Marlowe wrote: > > On Wed, Feb 2, 2011 at 10:46 PM, Greg Smith <greg@xxxxxxxxxxxxxxx> wrote: > > > example. Scott Marlowe was griping recently about a similar issue in some > of the LSI models, too. I suspect it's a problem impacting several of the > larger RAID cards that use the big Intel IOP processors for their RAID > computations, given that's the part with the heatsink on it. > > > Specifically the LSI 8888 in a case that gave very low amounts of air > flow over the RAID card. The case right above the card was quite hot, > and the multilane cable was warm enough to almost burn my fingers whe > > Interesting...that shoots down my theory. Now that I check, the LSI 8888 > uses their SAS1078 controller, which is based on a PowerPC 440 > processor--it's not one of the Intel IOP processors at all. The 8308 Dan > has as an option is using the very popular Intel IOP333 instead, which is > also used in some Areca 1200 series cards (1220/1230/1260). > > The Adaptec 5405 and 5805 cards both use the Intel IOP348, as does the Areca > 1680. Areca puts a fan right on it; Adaptec does not. I suspect the only > reason the 5805 cards have gotten more reports of overheating than the 5405 > ones is just because having more drives typically connected increases their > actual workload. I don't think there's actually any difference between the > cooling situation between the two otherwise. The LSI 8888 has a fan right on it. But it was just moving 90C air around in place. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
