[cisco-voip] Break Mirror on HP MCS

[Mike Lay (milay)]

HP does support hot pulling & plugging of devices. It is assumed that
you are replacing a failed drive & data may or may not be corrupted when
puling hot. Cisco does not support the pulling of drives hot is the
intention is to maintain this drive for disaster recovery. You should
always power down the server to remove drives unless you do not intend
to retain the data. Also if you are pulling drives you should test both
drives to ensure they are bootable. Lastly a 7845 should have a drive
pulled from both Mirrored pairs when disaster recovery is the goal.
 
Everything stated above is for Windows ONLY. ALWAYS ENSURE YOU HAVE A
GOOD BARS BACKUP!!!!!
 
Mike Lay
 
For MCS-7845 CallManager Servers

 

On MCS-7845 servers there are two separate RAID arrays: two disks in
slots 0 and 1 (RAID Array A) and two disks in slots 2 and 3 (RAID Array
B).

 

Starting with the Publisher and then repeating the steps on the
Subscribers carry out the following steps.  With these steps you check
the Fall Back and the upgrade drives before continuing, this is to
ensure your fallback scenario is good.

 

*         Label up each drive with the server name AND drive slot number
they are mounted in.

*         Shut down the server cleanly.

*         Partially remove one drive from each RAID Array (We will refer
to these drives as 0 and 2), leaving them half in their drive slots.

*         Start up server and ensure when prompted for HDD recovery F2
is selected.

*         Confirm that windows boots fully.

*         Shut down the server cleanly.

*         Reinsert the original drives 0 and 2. Do not use replacement
disks at this time.

*         Completely remove from each RAID Array, the drives that were
just tested (We will refer to these as drives as 1 and 3) ensuring you
have label each disk with the slot number it was just removed from
(slots 1 or 3) AND the server name.

*         Start up server and ensure when prompted for HDD recovery F2
is selected.

*         Confirm windows boots fully.

*         Insert the new replacement disks into drive slot 1 and drive
slot 3.

*         Ship the two removed disks to the address given below using
the packaging the new disks were shipped in.




On MCS-7835 servers there is only one RAID array: two disks in slots 0
and 1 (RAID Array A).

 

Starting with the Publisher and then repeating the steps on the
Subscribers carry out the following steps.  With these steps you check
the Fall Back and the upgrade drives before continuing, this is to
ensure your fallback scenario is good.

 

*         Label up each drive with the server name AND drive slot number
they are mounted in.

*         Shut down the server cleanly.

*         Partially remove the lower drive (we will refer to this drive
as drive 0) from the RAID Array, leaving it half in its drive slot.

*         Start up server and ensure when prompted for HDD recovery F2
is selected.

*         Confirm that windows boots fully.

*         Shut down the server cleanly.

*         Reinsert the original drive 0. Do not use replacement disks at
this time.

*         Completely remove from the RAID Array, the drive that was just
tested (We will refer to this drive as drive 1) ensuring you have label
the disk with the slot number it was just removed from (slots 1) AND the
server name.

*         Start up server and ensure when prompted for HDD recovery F2
is selected.

*         Confirm windows boots fully.

*         Insert the new replacement disks into drive slot 1.

 

________________________________

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 9:48 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

 

________________________________

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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