The brief answer is, "probably."  Randolph J. Herber
  <herber@dcdrjh.fnal.gov> writes: Hard drives sold by SGI are tested
  by SGI and are therefore known to work.  Generally, any SCSI-2 fully
  compliant, fast, single-ended disk drive will work on all
  SGI systems since the Personal Iris and IRIX 3.2; but there
  have been a few exceptions.  Some of the cheaper disks and some
  intended for the PC (whether IBM or Apple type) might not be 
  sufficiently compliant to the SCSI-2 standard.  Also be aware that 
  SGI usually will not provide hardware support to drives that were not 
  purchased through SGI, and may require you to remove those drives 
  during a hardware diagnosis or repair session.

  Several comp.sys.sgi.* contributors have encountered problems with
  Seagate Medalist drives.  Some of these drives may require patches
  which must be installed using an IBM-compatible PC; one author 
  reported success in using the patches 2160.EXE and PTI_SGI.EXE 
  in <http://www.futuretech.vuurwerk.nl/depot> to fix problems with
  his ST52160N.

Some parts © 2009 Advameg, Inc.