[ale] bigger disks under RAID1 with RHL 9 or RHEL4 on Dell PowerEdge?

[Jerry Yu]

I am under the impression if I replace a 9G disk under RAID 1 (hardware raid
by PERC) with a bigger disk, say 146G, the mirroring would still work fine.
After it all synced up, I can swap the remaining 9G disk with yet another
146G. If all this works out, now I'd have a pair of 146G with its top 9G
used in the mirror w/o interrupting service.  However, any way I can use the
left-over 146-9=137G ?
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