Hmm, that was my first preference. However, we have a Dell PowerEdge
2550 with a PERC card and when I asked Dell support if there was anyway
to do this, they said no. Perhaps they did not fully understand what I
was saying and I need to re-check it with them.

I know each disk replacement will only use the same amount of space for
the RAID as the one I removed, but one would think that after replacing
all 3 I could then use the extra space.

Best Regards, 

Dan Bartley
-----Original Message-----
From: Michel Erdmann [mailto:[EMAIL PROTECTED] 
Sent: Monday, February 09, 2004 09:57
To: Exchange Discussions
Subject: RE: Install larger disks sanity check

Performing a backup/restore is the most secure way, but depending on
your hardware this could be performed without downtime. Here's a
scenario for daredevils (which should be pre-pended with typical
Jack-ass warnings: Don't try this at home, or better, at work).

In RAID5, if your 'fail' one the disks you could replace it with a
larger new disk. When waiting for rebuilds in-between, you could replace
all three disks like this.
After the swap, the new RAID-set now has much more free space. If
possible (again, depending on hardware/software) you could grow to
logical disk online to fit the new size.

Although totally unsupported by Compaq/HP, I've done this successfully
on several of their raid controllers and disk configs. With NT4 online
logical disk grow was even supported using the Raid configuration
utility. In Windows2000 they pop-up warnings in the raid configuration
utility when you attempt this. (But they are warnings, it still
works...) You may need to do only one quick reboot to sync disks and see
the new free space.

We now have a SAN which supports growing logical disks. (but it still
makes my heart beat faster when performing it....)

Michel

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On 
> Behalf Of Dan Bartley
> Sent: Monday, February 09, 2004 3:25 PM
> To: Exchange Discussions
> Subject: Install larger disks sanity check
> 
> Running E2k, SP3 on Win2k Advanced SP3.
> 
> This is just more of a sanity check than anything. I need to 
> replace the
> 3 drives that make up the store's RAID with larger disks. I 
> plan to both
> backup to tape and copy the all the edb and stm files to another
> location (after stopping Exchange). The physical drives that 
> make up the
> RAID have only the stores on it, nothing else. Logs and system are on
> different physical drives. I plan to replace the disks, make sure the
> new larger RAID has the same drive letter and then replace the data
> files in the same location.
> 
> This should be all I need to do correct? Or am I missing 
> something else
> painfully obvious that may hang me?
> 
> TIA.
> 
> Best Regards, 
> 
> Dan Bartley
> 
> 
> 
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