[cisco-voip] RAID1 disk mirroring

[Jason Aarons (US)]

Am I correct in that mirroring behaved differently going from
CCM4x/Windows 2000 to CCM6/xRedHat in that before you could boot off
mirrored drive in either slot on MCS-7835/7845?  

 

It seems to me that the newer Platform is more picky about drive
location in the raid array, etc.  Not sure if it's limitation of the
Linux raid drivers , RHEL, etc.  

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Ryan Ratliff
Sent: Friday, December 04, 2009 10:20 AM
To: cips
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] RAID1 disk mirroring

 

Not supported by HP or Cisco as cips stated.

 

That said:

1. The server definitely won't boot and I wouldn't expect either disk to
be usable if you put them into the wrong slots.

2. Depending on the raid controller settings on the second server and
the hardware between both servers it could do anything from boot
normally to corrupt both disks.

 

I'd highly encourage you to test both scenarios with data on the hard
disks you don't mind losing.

 

-Ryan

 

On Dec 4, 2009, at 7:16 AM, cips wrote:





For Cisco MCS server this procedure is officially not supported...

 

1.       The system will boot from the primary disk

2.       In the new server the system will boot but you might have
issues with (raid) drivers in the os

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of ifilxh
Sent: vrijdag 4 december 2009 12:55
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] RAID1 disk mirroring

 

Our normal disk swap procedure is
1. power off the server
2. pull disk 1 out
3. if upgrade fails, power off the server again, pull out disk 0, and
put disk 1 back to the original tray, power on the server and then put
disk 0 back to tray0

Curious to know
1. what is going to happen if I pull out both disks and swap the disks,
disk1 goes to the slot0, disk0 goes to slot1
1. what is going to happen if I pull out both disks and insert them to
another server

Thanks in advance.

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