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Smart Array Expansion

Posted on 2008-09-30
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Last Modified: 2013-11-14
We have an HP DL380 G5 with a perc P400 controller and 5 146 GB SAS drives configured in raid 5 with hot spare. We added 2 additional hot plug 146 GB drives and need to expand the array. According to HP there is an issue with the ACU utility so we can't expand online. We must use the Smart Start CD and I need to know if anyone knows how long the expansion process might take.
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Question by:cwsoft05
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by:andyalder
ID: 22606474
What is this issue saying you can't expand online? P400 supports online expansion, it's even doing online expansion if you boot the smartstart CD since Linux on the CD is running.

It used to be 4GB per hour, it's probably 6GB/hour nowadays. You ca nset the expansion rate to high through the ACU first but it's still a slow process.
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by:cwsoft05
ID: 22606571
We talked to a HP engineer today and we were told that there is an issue with the DL380 and the ACU. When we load ACU 2.9, there is no option to expand, just create. We were told to use Smart Start, but that seems like it will be too much down time.
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by:andyalder
ID: 22606891
ACU 2.9? what OS? it's at 8.10.2.10 version for Windows. I would run the firmware update CD on the server, that won't take very long and latest firmware fixes a number of bugs. No option to expand, just create sounds like you haven't got the array or logical disk selected, just the controller. Menu is context sensitive so you have to have the right thing highlighted.
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by:cwsoft05
ID: 22607044
The network in Netware 6.5, sp5, trying to use the cpqonlin.nlm.  We have the correct option selected based on prior MLXXXX series instructions we have done before, the current review of the ACU manual.  We looked at all the possible items, in addition to what you state above.  The Expand option does not appear and confirms what HP tech support stated.

We currently have 45146GB drives in the array and want to add 2 more and if we have to do it offline via smart start, need to know how long it would take.  We don't have a 24 hour window available, significantly less.
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andyalder earned 500 total points
ID: 22607309
Oh, I see.

Well the ACU is just required to instruct the controller to do an expansion, once it's started the ACU isn't needed. You can boo the SmartStart CD, add disks to the array and set the expansion running then boot back into Netware and the expansion should carry on  regardless of what OS is running. Then you can boot the smartstart/ACU again a few days later and see how it is getting on (not that it gives you a percentage complete worst luck).

You'd better check that with the support engineer you spoke to before but I'm sure it's right, you can even turn the server off for a few hours and rebuild will continue when it's powered back on again.
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