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Don_G
Contributor
Contributor

VCB 1.5U1 backup preformace on Fiberchannel Very slow 5mb/s

we have 4gb/s fiber channel, Emc cx3-20 san and backing up from raid 1+0 8 disk array. all backups from this array and anyothers in our san only backup at 5mb/s using either full VM or FIle level VCB backups.

When i ran a disk benchmark i get 150mb/s on that raid.

How can i make backups faster? how do i even start to isolate this issue? what kind of preformance from a 1+0 should i recieve(15000rpm fc)? also on our sata raid (7200rmp 1TB drives) on the san its a 10disk raid 5 and we only get 25mb/s this seems drastically lower then it should be.

I welcome any help on this matter

Don

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Don_G
Contributor
Contributor

i wanted to add that over the network backups are around 130-150mb/s. why would fiber channel backups be so MUCh slower. also the network backups are not using vcb.

Don

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AndreTheGiant
Immortal
Immortal

On the VCB Server do you have powerpath installed?

How many HBA do you have?

Andre

Andre | http://about.me/amauro | http://vinfrastructure.it/ | @Andrea_Mauro
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Don_G
Contributor
Contributor

powerpath yes, 2 qloqic hba's.

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AndreTheGiant
Immortal
Immortal

Try to disable multipath on VCB system.

A simple way is remove PowerPath license, and PowerPath will work only in failover mode.

Then reboot your VCB and try again.

Andre

Andre | http://about.me/amauro | http://vinfrastructure.it/ | @Andrea_Mauro
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Don_G
Contributor
Contributor

I will try this out this week and reply with the results soon as i can.

Don

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