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Is it possible to expand a 3 disk RAID-5 into a 4 disk RAID-5 without losing the data with a Perc5i/Integrated card?

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Last Modified: 2012-05-11
I'd like to, in the future, expand a 3 disk RAID-5 array running on a PowerEdge 2950 that has a Perc5i / Integrated card.

It will be running ESXi 4.1 Update 1.

The goal is to avoid moving all the VMs on the data store off this array, so I don't have to destroy it to expand it.

I've been told this isn't possible; I've also been told it is possible, with the OpenManage software from Dell.

To date I've managed to run vihostupdate on a vSphere Management Assistant instance against the oem-dell-openmanage-esxi_6.2.0-A00.zip file. (After editing the xml file in it to permit it to run on 4.1.0)  It says it worked, but I'm not even sure how to access it now, as nothing looks different, so I'm assuming there is other software I need to take advantage of these new 'patches' I just put in. But I'm still not certain it will permit me to access PERC software on the ESXi OS. Tomorrow I'll probably go open the SSH ports to attempt to install OM-SrvAdmin-Dell-Web-LX-6.5.0-2247.ESX41.i386_A01.tar.gz.

I'd really just like to figure the correct way to get the most tools available to manage my servers and upgrade them as painlessly as possible in the future.

Thank you in advance.
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