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02-22-2013 02:22 AM
02-22-2013 02:22 AM
Network RAID 10 to Network RAID 10+2 migration - online?
Hi,
Is it possible to migrate a LUN in a Network RAID 10 configuration to Network RAID 10+2 online without downtime?
Kind Regards
Andrew
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02-22-2013 04:59 AM
02-22-2013 04:59 AM
Re: Network RAID 10 to Network RAID 10+2 migration - online?
yes... but depending on your internal network traffic bandwidth limitations and current loads you may or may not experiance performance degridation during the migration. If you aren't in a rush, just turn down the management group's internal bandwidth and just let it run. If you are in a rush, its better to shed as much load off all nodes as possible and turn the speed up to rebuild, but most places can't afford that kind interruption. The good news is that either way, all LUNs stay exactly the same for the attached servers so you don't have to worry about reconnecting or reconfiguring at that level, just the performance impact of the background rebiuld... just like if you would do a rebuild of a RAID disk array.