Re: Migrated (SAN_Copy) LUNs to new SAN, now we see too many disks
- From: Steve Follett <SteveFollett@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 30 Nov 2007 10:05:01 -0800
If I have a similar situation involving Windows 2003 R2 Enterprise X64 and
need to do some LUN re-creations, is there a version of dumpcfg.exe that can
be used on the X64 bit platform? When I run the 32bit version it seems to be
incompatible.
"John Toner [MVP]" wrote:
Mike,.
Those unreadable LUNs are probably "LUNZ" devices (I'm assuming Clariion
storage since you referenced EMC's SANCopy). If you present LUNs to a host
without using a LUN value of zero, it can cause this to occur. If you wish
to get rid of these LUNs, I would recommend contacting EMC support if you
haven't already to address this. FYI, this is unlikely to be related to your
disk signature issue.
If at any time, you presented both the source and target storage arrays to
the same host, this would likely cause a signature to change on one of the
copies. You can delete and re-add the resources in cluster, or you could
modify the disk's signature to match what cluster is looking for. You can
use dumpcfg to manipulate disk's signatures.
Regards,
John
"MikeE" <Mr.Michael.Edmondson@xxxxxxxxx> wrote in message
news:1192388986.760061.214910@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I have used SAN_Copy to copy 3 LUNS belonging to a 2-node MS cluster
(2 data and the Quorum) to a new SAN. After I attached the cluster
nodes to the new SAN, I see my 3 drives, but I also see 2 "extra"
drives listed as unknown / unreadable. I am now trying to delete the
physical disk cluster resource and recreate them. One worked
perfectly, but for the other I am getting a "signature does not match"
type error.
Diskpart shows ....
C:\>diskpart
Microsoft DiskPart version 5.2.3790.1830
Copyright (C) 1999-2001 Microsoft Corporation.
On computer: SRV-XYZ
DISKPART> list disk
Disk ### Status Size Free Dyn Gpt
-------- ---------- ------- ------- --- ---
Disk 0 Online 17 GB 0 B
Disk 1 Unreadable 0 B 0 B
Disk 2 Online 1020 MB 0 B
Disk 3 Online 1069 GB 1741 MB
Disk 4 Online 546 GB 16 GB
Disk 5 Unreadable 0 B 0 B
DISKPART> list volume
Volume ### Ltr Label Fs Type Size Status
Info
---------- --- ----------- ----- ---------- ------- ---------
--------
Volume 0 D CD-ROM 0 B Healthy
Volume 1 C NTFS Partition 17 GB Healthy
System
Volume 2 Q Quorum NTFS Partition 1020 MB Healthy
Volume 3 Z Data NTFS Partition 1067 GB Healthy
Volume 4 Y NTFS Partition 530 GB Healthy
DISKPART>
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