Re: 3ware vs. MegaRAID

On 30/03/2010 19:18, Greg Smith wrote:
> The MegaRAID SAS 84* cards have worked extremely well for me in terms of
> performance and features for all the systems I've seen them installed
> in. I'd consider it a modest upgrade from that 3ware card, speed wise.
> The main issue with the MegaRAID cards is that you will have to write a
> lot of your own custom scripts to monitor for failures using their
> painful MegaCLI utility, and under FreeBSD that also requires using
> their Linux utility via emulation:
> http://www.freebsdsoftware.org/sysutils/linux-megacli.html

Getting MegaCLI to work was a slight PITA, but once it was running it's
been just a matter of adding:

daily_status_mfi_raid_enable="YES"

to /etc/periodic.conf to get the following data in the daily reports:

Adpater: 0
------------------------------------------------------------------------
Physical Drive Information:
ENC SLO DEV SEQ MEC OEC PFC LPF STATE
1 0 0 2 0 0 0 0 Online
1 1 1 2 0 0 0 0 Online
1 2 2 2 0 0 0 0 Online
1 3 3 2 0 0 0 0 Online
1 4 4 2 0 0 0 0 Online
1 5 5 2 0 0 0 0 Online
1 255 248 0 0 0 0 0 Unconfigured(good)

Virtual Drive Information:
VD DRV RLP RLS RLQ STS SIZE STATE NAME
0 2 1 0 0 64kB 69472MB Optimal
1 2 1 3 0 64kB 138944MB Optimal

BBU Information:
TYPE TEMP OK RSOC ASOC RC CC ME
iTBBU 29 C -1 94 93 816 109 2

Controller Logs:

+++ /var/log/mfi_raid_0.today Sun Mar 28 03:07:36 2010
@@ -37797,3 +37797,25 @@
Event Description: Patrol Read complete
Event Data:
None
+
+========================================================================
+seqNum: 0x000036f6
+Time: Sat Mar 27 03:00:00 2010
+
+Code: 0x00000027
+Class: 0
+Locale: 0x20
+Event Description: Patrol Read started
+Event Data:
+ None

etc...

Cheers
--
Matteo Beccati

Development & Consulting - http://www.beccati.com/