Re: kern/135408: [aac] Adaptec 5405 RAID controller hanging under

The following reply was made to PR kern/135408; it has been noted by GNATS.

From: Yuri Gorchakov <[e-mail]>
To: [e-mail], [e-mail]
Cc:  
Subject: Re: kern/135408: [aac] Adaptec 5405 RAID controller hanging under
 high load +suggested fix
Date: Tue, 08 Dec 2009 21:38:08 +0600

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 Hi all,
 
 I'm still having this issue with the controller, latest firmware (5.2-0
 (17517)) and drivers (2.2-8 (17517)) don't fix the problem, but Adaptec
 suggested me to turn off write cache (switch it into write throught) on
 the controller (smth like arcconf SETCACHE 1 LOGICALDRIVE 0 wt) - so I
 did that and now I'm able to highly load the server with no problems.
 Current uptime after this change is 15 days.
 I didn't measure the performance penalty though.
 - --
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