Testing Perc2/Si RAID under RedHat 7.2

Michael_E_Brown@Dell.com Michael_E_Brown at Dell.com
Fri Mar 29 16:02:00 CST 2002

Sorry, but hotswap doesn't mean what you think it means.

Hotswap means that you can run 'afacli' and do a "prepare for removal"
command which turns off power to a certain SCSI slot. Then you can safely
remove it. You do the same thing to add a drive. After you have added it,
there is a "turn the thing back on" command.

Yes, yanking a drive from a running system can certainly do any one of a
number of bad things. So, no, I don't really know how to 'safely' test this


> -----Original Message-----
> From: Kate Rosenbloom [mailto:kate at rapidmoney.com]
> Sent: Friday, March 29, 2002 3:47 PM
> To: Linux-PowerEdge at exchange.dell.com
> Subject: Testing Perc2/Si RAID under RedHat 7.2
> Is there a safe way to test software notification of disk problems on
> our PowerEdge 2400, running RedHat 7.2 ??  We would like to 
> verify that
> if a disk fails, that an entry appears in /var/log/messages (we use
> "swatch"
> as a log monitor -- and we will configure it to email us if it sees
> AAC:).
> We attempted to test this on our system while running RedHat 6.2, and
> saw
> no such log messages.  When we called Dell tech support and explained
> our
> test scenario (pull a drive while the system is running) we provoked
> horrified
> lectures about potential damage to our drives.  (So "hot 
> swap" means OK
> to 
> add a disk while system is running, but not to remove a working drive
> ??)
> Is there a "safe" way to perform this test ??   We need to assure that
> notification will happen...
> Please reply to me as well as to the list.
> 	Thanks in advance,
> 		Kate Rosenbloom
> 		RapidMoney Corp.
> 		Santa Cruz, CA
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