Hi,
I've seen similar question asked about this topic but couldn't find the
summary so I apologize for posting this topic again.
I would soon be installing EMC disks in a TruCluster environment and migrate
the existing data on Storageworks to the new EMC disks.
Following is the config:
Server A:GS60 - Digital UNIX V4.0F, TruCluster V1.6, LSM
Server B:ES40 - Digital UNIX V4.0F, TruCluster V1.6, LSM
HSZXX controller with Storagework disks
This is what I plan to do:
1. Install new KZPBA x 2 on each Alphaservers (total of 4 controllers).
2. Daisy chain the EMC disks to the Alphaservers. I'll be having 2 new SCSI
buses.
3. Create new devices from EMC disks and use LSM to mirror them to the
existing Storagework data disks.
4. Once everything is synchronized, I'll use LSM to detach the old disks
from the mirror.
5. Shutdown the Alphaservers and then remove the old disks.
6. Hopefully everything comes up properly on reboot.
Questions:
1. Is this the right approach? Has anyone out there done this? Any gotchas I
have to be careful of?
2. Assuming I did all the makedev and mirroring on Server A, which have the
disk services running, what other changes do I need to do with regards to
the TruCluster software? Will TruCluster be aware of the new drives
automatically (especially during failover)?
3. What changes do I need to do on Server B? Do I need to define the new EMC
devices on this server so that during failover it can import successfully?
4. To complicate things further, I'll be installing EMC's Powerpath as well.
Has anyone done this on a cluster environment? If yes, in which of the above
steps should I insert the Powerpath installation?
Sorry for asking so many questions but I don't have the luxury of testing
all the procedures on a test environment first. This means I'll be going
straight to the production servers with minimal downtime!
Any suggestions will be greatly appreciated.
Regards,
Carlos Chua
chuacarlos_at_hotmail.com
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Received on Thu Jun 22 2000 - 15:18:13 NZST