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September 17th, 2012 12:00
SRDF/DM documents
Hi ,
We are planning to migrate data from DMX-3 to VMAX and get rid of DMX-3 box .. Our plan is to do the migration using SRDF/DM as it allows online migration & fast as opposed to open replicator ..
I am looking for SRDF/DM documents for ex: how SRDF/DM works & how to configure SRDF/DM in between my 2 arrays however i am unable to find anything useful which will give an insight .. all i know at this point is SRDF/DM uses adaptive copy for data transfer
Any help would be much appreciated...
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RRR
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September 17th, 2012 13:00
I've used SRDF/DM a lot. Actually I think it's included in the regular SRDF license, but instead of having data replicating synchronous or asynchronous, there the acp_disk setting which translates to SRDF/DM. And when data is al ost 100% replicated, you switch down your host in order to let the replica get to the full 100%, or you can switch to SRDF/S so it get to the full 100%.
dynamox
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September 17th, 2012 13:00
OR Hot push is not an option ? We used to migrate between DMX3 and VMAX 20K, just as fast as RDF. Even thought we are licensed for SRDF/S , OR gave us an option to go to meta devices that had different construct vs the source volume. IE : 4 way meta --> 2 way meta.
sauravrohilla
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September 18th, 2012 03:00
I second Dynamox's suggestion of using OR for migration as it gives more flexibility than SRDF.
pdubey2
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September 18th, 2012 04:00
Thanks RRR, do you have any documents on how to setup the SRDF/DM .. we have existing licenses for SRDF which i know we can use...
All i am looking now is how to configure SRDF/DM between 2 arrays for data migration to happen...
dynamox
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September 18th, 2012 04:00
if you have existing licenses for SRDF then why bother with /DM ? Create RDF pairs in acp_disk mode, when close to completion change mode to sync, shut the host down and you are done.
RRR
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September 18th, 2012 06:00
Dynamox, IMHO /DM is the same as acp_disk, right?
dynamox
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September 18th, 2012 06:00
yes
RRR
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September 18th, 2012 07:00
That's what I said (or meant to say)