On Tue, 2006-04-11 at 20:32 +0000, Andy Smith wrote: > 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? raid1 of 4 will give u read performance like 1 disk; raid10 of 4 can give u read performance like aggregated 2 disks. > - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
