If you had 3990-6 control units, you could do the equivalent of RAID1 called dual-copy on real 3390s. I remember swapping HDA's on several occasions concurrently using that capability.
Dana On Mon, 2 Jun 2014 19:26:05 +0000, DASDBILL2 <[email protected]> wrote: >I am thinking only of a SLED that was implemented without RAID, regardless of >how real or quasi its CKD-ness was. I am satisfied with knowing that it was >around 12/31/96 for the 3390 and possibly a little for the 9340, but only if >the 9340 had no RAID mapping internally. > >Bill Fairchild > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
