On Tue, 17 Mar 1998 10:41:51 -0500, Rick Tomlinson <[log in to unmask]>
wrote:

>Has anyone ever used or heard of anyone using mirrored EMC Symmetrix
>drives for the system volume set?  What other alternatives are there for
>adding this type of redundancy?
>
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Rick Tomlinson       [log in to unmask]      (336) 758-5811
>Information Systems                 fax        (336) 758-7127
>Wake Forest University             www.wfu.edu/~rick
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Look at IBM's SSA for the HP3000.  It is typically several HUNDRED
PERCENT faster, at about half the price.  Hardware mirroring is in
beta now. All the usual features you would expect, including:
 - hotswap
 - multiple initator support (with limitations)
 - RAID capability
 - Works with HP's predictive & other diagnostics
 - priced around 50 cents/MB.
 - very high density .. almost a terabyte in a HP 19" rack
 - no single point of failure (redundant paths, cables, power)
 - add, delete, reconfigure, mount them to different systems without a
reboot!!! (requries 5.5)
  yada yada yada

I know, I was the project leader  on the team that ported it to the
HP3K I contracted Michael Hensely with Allegro to port the diagnostic
routine to MPE/iX ... So you know it was done right!

David
http://www.compass-corp.com
972-208-3660