Like I said, there was a thread some time ago where the OP said this was not possible with RSM, however, looking at these, I believe you should be able to do it.  Without looking at that thread, I can't say what he was running into, what he was trying, or what circumstances may have been preventing it from working (may have even been running RSM on client OS installed on a server).  Anyway, the following documentation refers only to the SAS/PERC 5 controllers ... SAS/PERC 6 controllers should work as well. www.dell.com/.../ps1q07-20070196-Gopakumar-OE.pdf (original documentation, but as long as Online Capacity Expansion was not removed in subsequent versions, seems you should still be able to do it) Steps/description: support.dell.com/.../HH383A00.pdf RAID Storage Manager (this latest version supports Windows XP, Vista, 7 and SAS 6/PERC 6 controllers):
Despite reading the Dell manual and searching the net, I haven't been able to solve an issue with the PERC 6i adapter, so I'm hoping that someone in this community could set me on the right track ... the setup:  - a Dell T7500 tower with one PERC 6i adapter - the PERC 6i controller currently has the following setup:   -- one 1 TB SATA HDD configured as VD0 (RAID 0) ==> this is the C-drive for the operating system (Win7)   -- two 2 TB SATA HDD's configured as VD1 (RAID 0) ==> this is the drive for my user data the problem: - additionally, the drive enclosure has one additional 1 TB SATA HDD (same type as I use for the VD0), which is visible as HDD1 in the PD view - I would like to add this HDD to VD0 and make a raid level migration from RAID-0 to RAID-1 what I encounter:  - I select HDD1 in the PD Mgmt view, press F2 and select 'Make Global HS" and press "Yes" - I get the message: "Warning! None of the existing VD's will be covered by this Hot Spare. Error code: Unknown" - In the VD Mgmt view, the disk is now visible under the Hot Spare branch of the tree, highlighted in red color, and with the text: "--:--:01 (Global, Unusable. Affinity)" Anyone familiar with this - how could I add the unused disk to VD0 and then migrate VD0 (mu C-drive) from RAID-0 to RAID-1?
Perc 6i: cannot add Hot Spare or do raid level migration