[cisco-voip] Break Mirror on HP MCS

[Voll, Scott]

We use BARS nightly and before and after each upgrade pull a drive and
re-mirror.

That's the best Disaster recovery option we have come up with.

Scott

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Simon, Bill
Sent: Friday, November 03, 2006 8:05 AM
To: Ryan Ratliff
Cc: Klaczko, Edwin; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Break Mirror on HP MCS

We always pull ours live; who has time for shutdowns if you want to take

mirrors every day?  The mirror state is like that of a 
crashed/powered-off server, but this doesn't seem as "bad" anymore as it

did ten years ago.  Nowadays the operating system recovers cleanly every

time.

TAC doesn't support using mirrors at all for disaster recovery, this is 
what we were told.  However TAC has never offered us a good 
disaster-recovery option either.  Especially an option for botched 
upgrades.  You can't use BARS to restore an old setup when you've 
upgraded the CCM app or operating system.  BARS is only good for 
configuration.

Ryan Ratliff wrote:
> Pulling a drive while the server is essentially pulling the plug on  
> the server, at least from that drive's perspective.  It may work, but

> isn't a TAC or HP supported means of backup.  If you are going to  
> break the array power down the server first.
> 
> -Ryan
> 
> On Nov 3, 2006, at 9:17 AM, Klaczko, Edwin wrote:
> 
> 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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-- 
Bill Simon - bills at tns.its.psu.edu - (814) 865-2270
http://tns.its.psu.edu/
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