On Tue, Apr 11, 2006 at 07:25:58PM +0200, Laurent CARON wrote: > Andy Smith wrote: > >On Tue, Apr 11, 2006 at 04:41:30PM +0200, Shai wrote: > >>I have two SCSI disks on raid1. > >>Since I have lots of reads from that raid, I want to add two more > >>disks to this raid so that read will be faster. > >> > >>How should I add the new disks? > > > >Is this possible with md currently: > > > >Create a RAID-10 on the two new disks specifying one disk missing > >from each mirror. > > > >Then copy data over and add the two existing disks letting it > >resync? > > Why not growing the array with 2 more disks? Well I guess a RAID-1 of 4 disks would be slightly more redundant than a 4 disk RAID-10, but it would have half the capacity, and the read performance would be very similar, no?
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