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Question regarding Open Replicator
how many devices we can keep in a open replicator sessions pairs file? I have 32 devices to migrate from Clariion to DMX. Can I keep all these devices in a single session pairs file? or can any one tell me if there is a limit for the number of devices in a session pairs file...can we use any command to keep all these devices in a single file?
Please let me know regarding this?
Please let me know regarding this?
AmolMahajan
108 Posts
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November 2nd, 2008 18:00
32 devices in a single session won't be a problem but you must aware of size of devices you are copying. If you have very large metas then your session would run for long time and for smaller metas it would finish quickly(cross check your downtime and time required to finish the session).
can we use any command to keep all these devices in a single file?
No. you have to add devices(or wwn of devices) manually in a file.
rawstorage
419 Posts
1
November 2nd, 2008 04:00
You should note each device constitutes its own session within the symmetrix. therefore you are limited by the number of sessions already in use on the symmetrix.
The maximum number of active sessions allowed is 1024 when running Enginuity
version 5773 or later. The default for Enginuity version 5773 or later is set to 1024.
When running Enginuity version 5772 or earlier, the maximum number of active
sessions allowed is only 512. The default for Enginuity version 5772 or earlier is set to 512.
There are other limitations on how many sessions you can have for a single device. If you're trying to create multiple remote copies of the same volume within the same create command, the limit is 15. When created this way, all remote copies must be refreshed at the same time, as these 15 remote volumes account for only 1 Open Replicator session. However, if you create them independently, you can have up to 16.
Hope this helps..
RRR
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November 6th, 2008 13:00
Cost me quite a lot of headaches when I migrated my 55TB back in the summer of 2006..... There were several hosts with more than 300 LUN's attached and this implied having to use 3 separate copy actions, where only the first could be incremental and the other (300-128) were full copies.