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May 9th, 2012 08:00
SAN Copy Questions
Quick question.
I have SAN Copy licenses on both a CX4-480 and CX4-240 and I have zoned the arrays together based on EMC's documentation. Essentially:
SP A0 - SP A0
SP A0 - SP B0
SP A1 - SP A1
SP B1 - SP B1
Both arrays are checked in to each other. I created a 500GB test lun and I want to migrate the data from the CX4-240 to the CX4-480. When I try to initiate the copy it says that it can't communicate. I'm wondering if there needs to be a storage group created on both arrays. If so, how would this help a lun migration if the luns are already in a storage group?!
There has to be a quick and easy Unisphere way of doing this without having to do CLI (which I hate). Anyone have any idea what's the best way to get it to work and to migrate luns from one array to the other? I know we're supposed to stop I/O as that makes sense. Do I have to remove the luns from the host to stop I/O? Do the luns needs to be removed from the hosts on both sides for this to work?!
Let me know!
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dynamox
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May 10th, 2012 10:00
hmm..little caveat for clusters
emc141877
dynamox
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May 10th, 2012 10:00
win2k3, years ago. What are your questions ?
jarbarian
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May 10th, 2012 10:00
W2K8
jarbarian
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May 10th, 2012 10:00
Do you have any experience performing SAN COPY with SQL Clusters?! ☺
dynamox
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May 10th, 2012 10:00
win2k3 or win2k8 ?
jarbarian
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May 10th, 2012 10:00
But, but, but…. I hate CLI!!! ☺ Thank you for this, good info to have. I’ll work on it today. I was able to get a lun copied over but as it’s part of a SQL cluster there are a few things to check first. If you know of any issues with SAN COPY and SQL Clusters, let me know ☺
jarbarian
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May 10th, 2012 10:00
Mainly, what happens to the shared luns on the old array when they are taken away and the SAN COPY luns from the new array are added to the cluster. Is that going to require us to remap everything on the new drives or will it pick up right where it left off? Any special things I need to know before I attempt this?
dynamox
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May 10th, 2012 12:00
SanCopy will copy everything, disk signatures etc. On the night of cutover and after good full backup (
) , you shutdown the cluster/server, run final SanCopy, unzone old storage , present new storage and boot it up.
jarbarian
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May 11th, 2012 05:00
Yes but they’re complaining about all the work required to do so. I was going to use a 500GB test lun and have it on only ONE cluster server and migrate it to see if it worked ok. That’s what my meeting at 9:30 today is about ☺
jarbarian
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May 11th, 2012 05:00
When you san “Run final SAN COPY” are you talking about a FULL SAN COPY session or incremental?
jarbarian
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May 11th, 2012 05:00
Roger that. You da man! Appreciate the help, now I have to get the admins to listen to me when I say “this will work and not break your SQL cluster” hahaha.
dynamox
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May 11th, 2012 05:00
dynamox
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May 11th, 2012 05:00
incremental
dynamox
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May 11th, 2012 06:00
what work, you are doing all the work
..they just need to bring it down and when you are done bring it back up.
jarbarian
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May 11th, 2012 06:00
That’s what I thought. Perfect! Appreciate everyone’s help!