[CentOS] SAS raid controllers
steveb at mcs.st-and.ac.uk
Wed Feb 17 11:05:45 UTC 2010
I am running a 51645, two 31605 and four 3405 SAS raid controllers from
adaptec plus a few more older 2820sa cards.
Two of the 3405 controllers have been running for nearly three years
without any issues at all.
The "5" series card has been working fine. They do run very hot so even in
an air-conditioned room make sure there is plenty cooled air passing over
the cards heat sink. There is no fan on the card just the heat sink. As a
comparison in the same room with the same case, fan setup and backplane
the 3405 was running at 38 C but the 51605 was running at 105C .. Not
Good. This causes the physical HD's to drop out of the raid and other
problems even though the controller is reporting the temps as normal (this
is normal for the 5 series cards from what I read). I installed a PCI
slot cooler (Antec Cyclone) positioned next to the card and that brought
the controller temp down to 48 C. Remember this is in an already
air-conditioned room holding temps at 16C.
Also beware of the HD's you buy for the raid. I bought the WD2002 (RE4
-GP) 2TB enterprise class drives.. They all need a firmware update, a
nightmare when you have 48 of them to update in a working raid. All of
them also have to be jumpered down to SATA 150 . As they have a
serious issue that even the firmware update can not fix.
Hope this helps,
On Tue, 16 Feb 2010, Gordon McLellan wrote:
> Is anyone running either the newish Adaptec 5805 or the new LSI (3ware) 9750 sas raid controllers in a production environment with
> Centos 5.3/5.4?
> The low price of these cards makes me suspicious, compared to the more expensive pre-merger 3ware cards and considerably more
> expensive Areca ARC-1680. I've been 'burned' by the low cost of Promise raid cards (just as this group pointed out, they're crap
> cards!), but I'm still not convinced that most expensive == best.
> When it comes to parallel scsi cards, Adaptec has always been my choice regardless of platform, but I've never used their serial scsi
> products. I have several older pre-merger 3ware cards installed and have been working flawlessly for years, but under a windows
> I noticed none of these manufacturers are listed on the upstream provider's HCL, yet they all eagerly claim "Linux" support on their
> respective websites.. The Adapetc website actually names both Centos and the upstream provider as 'supported'.
> Kind Regards,
Dr Stephen Brooks
Solar MHD Theory Group
Tel :: 01334 463735
Fax :: 01334 463748
E-mail :: steveb at mcs.st-andrews.ac.uk
University of St. Andrews
St Andrews, Fife KY16 9SS
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