Visit The New, Modern Unix Linux Community

Operating Systems AIX Migrating LUNs to new storage array Post 303038873 by rbatte1 on Monday 16th of September 2019 07:57:15 AM
Just a thought (and trying to avoid downtime) can you not add the new LUNs into the VG and then migrate them with the server still live? I've done this very successfully and prevented needless hours of downtime (three weekends-worth)

The team I was helping to do this were very nervous and wanted the belt & braces approach so we:-
  1. Added the new LUNs to the VG
  2. Mirrored the LVs (no sync) and confirmed the layout was correct (not spread to old disks etc.)
  3. Ran a syncvg and left if. Any problems, we would drop the new leaving the old intact.
When it had completed, we:-
  1. Removed the mirror from the old/original disk
  2. Removed the original disks from the volume group
Like I say, this was done with the server online and processing. The volume manager deals with this very well, and whilst it takes a long time to synchronise, it's probably no worse than waiting for something else to migrate the data. It is also reversible up to the point you commit by removing the mirror copies on the old disks.

Why do you not want to have both SANs connected at the same time? The usual arrangement is to have the SAN connections passed through a switch rather than direct to the AIX host. Is there a reason that you could not just add the new SAN connections to these switches?

I hope this gives you an alternative,

Last edited by rbatte1; 09-16-2019 at 09:03 AM..
Test Your Knowledge in Computers #348
Difficulty: Easy
Awk's built-in variables include the field variables: $1, $2, $3, and so on ($0 represents the entire record).
True or False?

6 More Discussions You Might Find Interesting

1. Filesystems, Disks and Memory

Storage array question

We just purchased a MOD30 disk array strage system. We have 15 drives and 2 hot spares. We're running a database app with 8 data sets. I'm trying to get the best i/o speed out of my disk configuration. Right now I have 3 raid5 arrays setup. This seems to offer the same performance as having the... (1 Reply)
Discussion started by: ncmurf00
1 Replies

2. Filesystems, Disks and Memory

how can I monitoring the LUNs in HP storage

Hi, How can i monitoring the LUN in HP Storage with korn shells? I would like to have a shell can monitoring the LUN, VGs, lvols and raw devices. Jesus (3 Replies)
Discussion started by: jgutierrez29
3 Replies

3. Solaris

storage array simulator

hi i haven't much experience in solaris. I would like to know about storage. how to configure,how it is working etc....can i get any simulator for doing these work? plaese send me the link . please help me advance thanks to all (2 Replies)
Discussion started by: sijocg
2 Replies

4. HP-UX

HP Storage Array

hi I need to check status and configure HP Storage Array device. HP Storageworks P2000 Please suggest (0 Replies)
Discussion started by: anand87
0 Replies

5. UNIX for Advanced & Expert Users

VxVM breaking mirror for migrating storage

We are in the process of migrating storage from one array to another. I know the commands I would use in LVM but I am not very familiar with VxVM. The goal is to attach the new LUNs from the new array and add them to the disk group. Then mirror the data online to these new LUNs using VxVM... (4 Replies)
Discussion started by: keelba
4 Replies

6. Red Hat

Migrating an Oracle database storage - REDHAT4

e have a RHEL4 server with an Oracle 10 ( RAC ) are migrating storage bank records. The copy is made by the storage they make a copy of the level of disk all blocks are copied and the file permissions. Problems we had Initially the Cluster service was not rising due to absence of OCR disks... (0 Replies)
Discussion started by: fausto.ncc1701
0 Replies
VGIMPORT(8)						      System Manager's Manual						       VGIMPORT(8)

vgimport - make exported volume groups known to the system SYNOPSIS
vgimport [-a|--all] [-d|--debug] [-h|-?|--help] [-v|--verbose] VolumeGroupName [VolumeGroupName...] DESCRIPTION
vgimport allows you to make a Volume Group that was previously exported using vgexport(8) known to the system again, perhaps after moving its Physical Volumes from a different machine. OPTIONS
See lvm(8) for common options. -a, --all Import all exported Volume Groups. --force Import exported Volume Groups even if there are missing Physical Volumes. This option should only be used if the missing devices are known to have failed and they cannot be restored. SEE ALSO
lvm(8), pvscan(8), vgexport(8), vgscan(8) Sistina Software UK LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) VGIMPORT(8)

Featured Tech Videos

All times are GMT -4. The time now is 03:44 PM.
Unix & Linux Forums Content Copyright 1993-2020. All Rights Reserved.
Privacy Policy