[cisco-voip] Break Mirror on HP MCS

[Philip Walenta]

While I've pulled a drive many times, there is a danger.
 
Out of 100+ drives I've pulled, 4 of them wouldn't boot because the mirror
was broken at what I'm assuming is the wrong time.
 
Always preferable to shut down then pull.

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From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Keith Klevenski
Sent: Friday, November 03, 2006 10:13 AM
To: Jason Aarons (US); cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Break Mirror on HP MCS



I've always just pulled the drive and put in a spare and let it rebuild on
our ancient 7835's.  good info here tho.

 

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From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jason Aarons (US)
Sent: Friday, November 03, 2006 10:03 AM
To: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Break Mirror on HP MCS

 

You can't pull a SATA drive in a MCS-7825 hot, but I've pulled many SCSI
drives from DL-380s hot. The Event Viewer logs do a great job of showing
what's happening with the SCSI controller and the raid re-builds.  A 36GB
drive takes almost exactly 45 minutes to re-build, it's all done in Compaq
hardware versus software.  Sure if you could power it off that would be
recommend, but I've seen a few sites with single MCS-7835 and had to break
the raid mirror couple days before a upgrade and powering down wasn't a
option.

 

Would you pull a 6724 or NAM or IDS module in/out of a 6509 hot?  Some would
say sure, others have lost switches on "hot-swappable" parts!

 

I know the IBM x440s we had you could replace CPUs and RAM hot in
production, only thing you couldn't swap hot was the motherboard! 24x7x365
non-stop computing!

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From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Voll, Scott
Sent: Friday, November 03, 2006 10:48 AM
To: Klaczko, Edwin; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Break Mirror on HP MCS

 

I always shut down the Server.. Pull the drive.. Power up the server.. Then
put in the new drive.

 

I have never pulled a drive in use.  Probably not the best option.

 

Scott

 

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From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Klaczko, Edwin
Sent: Friday, November 03, 2006 6:17 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Break Mirror on HP MCS

 

I've ordered some spare HDs and wanted to use them to keep an extra backup.
I'm used to working with Dell servers and had a bad experience pulling a
hot-swap drive live.  Their RAID controller allows you to power down a drive
to remove it.  I couldn't find a similar feature on the HP interface.  Is
this necessary or is it safe just to pull the drive live.  Any help would be
appreciated.

 

 

Eddie Klaczko

IP Telephony / Network Specialist

CC Schaumburg School District 54

eklaczko at sd54.org

 


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