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1146
March 19th, 2013 13:00
Need to remove the zone members from active zones does this require downtime for the host
Hello,
We hit a max number of SCSI paths to a ESXi host 1024 as we are having 8 paths per each lun, in order to go pass this issue we decided to reduce the number of paths to 6. So we need to remove one zone member from each fabric.
We are having two Connectrix ED140M(Mc data) switches first one represents Fabric A and the other Fabric B. So does this cause any disruption to the production or any data loss if we do this activity on the fly and I'll be doing this on one fabric at a time.
we've powerpath/ve 5.7 for all the hosts.
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dynamox
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20.4K Posts
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March 19th, 2013 13:00
if you are removing extra paths to a device and there is some sort of multi-pathing on the host, you will not experience any issues. You might have to do some clean up in PowerPath to delete dead paths.
BalajiPaladugu
85 Posts
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March 19th, 2013 14:00
when you mean extra paths do you mean (all paths being active) and the data is actively being tranfered through all the paths
some of the active paths right?
and if IO's are being transferred at that moment when we are removing the same path will there be no daat loss?
like TCP/IP do FC protocol also have the acknoledgement that need to be fullfilled to make the transfer complete ?
Do you have any best practice for the average or highest amount of IO's an SP port can process at a time? we are having an average of 1024 IOS on each port.
dynamox
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March 19th, 2013 14:00
you did not specify what array you are connected to, on VNX some are active and some are standby ..on VMAX all are active. There will be no data loss, PowerPath will redirect I/O to active paths. I do not have those statistics, your local USPEED guru might provide those numbers.
dynamox
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March 19th, 2013 15:00
i do not have experience with PowerPath/VE , with regular PowerPath you can unmanage certain paths and then reclaim them.
BalajiPaladugu
85 Posts
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March 19th, 2013 15:00
we use CX4-960, Thank you dynamox for the answers and can we do the same process by first disabling the paths on powerpath first and then remove them from zoning.
this is will be take all day long I guess as we need to disable the paths for each device or is there any cmd in powerpath which disables the paths completely for all the devices at once.
BalajiPaladugu
85 Posts
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March 20th, 2013 14:00
Thank you dynamox...