Re: Informix 7.24 with SAP R/3 : EMC2 : striping / fragmentation

Posted in 1998

Art S. Kagel — Fri, 11 Sep 1998 12:09:08 -0400 — source: Informix-list mailing list archive (1991-1998)

Ashby, David wrote: > > I don't believe you can use striping with mirrored disks (configuration > specified in original message). Stripping is for higher raid levels. Of course you can, either that or my >500 striped mirrored disk drives are not really there! This is called either RAID10 or RAID 1+0 to recognize that it is really RAID1 (striping) over RAID0 (mirroring). You just build a bunch of mirrored pairs then build a stripe set from the logical mirror devices and voila! RAID10. BTW don't EVER do it the other way around (ie mirroring two stripe sets) which might be called RAID01. You lose most of the recovery advantages of RAID10. Art S. Kagel