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remove srdf
Hi guys,
I have a dynamic srdf. if i remove the pairing on prod and dr. are my data will be intact on prod?
I have a dynamic srdf. if i remove the pairing on prod and dr. are my data will be intact on prod?
xe2sdc
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August 13th, 2008 00:00
You can remove pairs online, without affecting prod hosts.
xe2sdc
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August 22nd, 2008 13:00
RRR
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August 22nd, 2008 13:00
bodnarg
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August 25th, 2008 06:00
Still no outage or impact to your production host, just realize that you take down your entire DR replication setup while you do this (very minimal) work.
Not a big deal, just something to consider. If you are removing all of the volumes involved in the RDF group then nothing to even consider.
xe2sdc
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August 25th, 2008 07:00
1) when you have a RDFgroup running in SRDF/S (synch) mode you can split (and delete) any single pair .. without affecting consistency of all other pairs.
2) when you have a RDF group running in either ACP_DISK or ACP_MEM mode you can split (and delete) any single pair (again without affecting other pairs and their in-consistency).
3) when you have a RDF group running in SRDF/A (async) mode you can't split a single device. You have to disable SRDF/A (and turn back to SRDF/S or ACP_DISK mode) and split/deletepair desired pair. After deleting unneeded pair you can resume SRDF/A (set mode async) and enable consistency protection (symrdf -g xxx enable).
4) when you have complex replica with both SRDF/A and SRDF/S (in either concurrent or cascaded style) or even STAR, the easy answer is "it depends" however above mentioned general rules still apply.