On 04/24/2012 03:20 AM, John R Pierce wrote: > On 04/23/12 5:33 PM, Boris Epstein wrote: >> Thanks! The controller I've got (I believe it is a 3Ware 9000 series) - I >> think that controller does not allow you to create hardware slices on top >> of a RAID'ed disk (volume). But that is a good idea in general. I used that >> approach on a couple of HP Proliant servers and that worked. > > really? I've never run into ANY sort of hardware raid that had any such > restrictions. I've not used the 3ware stuff, but I've used lots of LSI > Logic raid (9260-8i, etc), HP SmartArray stuff (p410, etc), Dell PERC > stuff, etc etc. > > anyways, I'm dealing with a pair of single 3TB (2.78 TiB) drives in a > mdraid mirror here as the system disk. > > > On 04/23/12 4:56 PM, Dennis Jacobfeuerborn wrote: >> You could use LVM. Just create 2TB partitions and use them as physical >> volumes for a large volume group. Then just create one big logical volume >> from that volume group. > > > um, LVM can't see over 2TB of the drive either, unless its formatted > GPT, whereupon it can't be used as a boot device on a non-EFI system. The idea is to create multiple 2TB partitions. In one specific case I set up a 4TB System by creating a 1G boot volume and 3.99T system volume. Then I created two 2T partitions on the system volume, formatted them as physical volumes and added them to the main volume group. Then you can create a 4T logical volume if you like. Regards, Dennis