We have three Model 20 Disk arrays using Raid 1 mirroring (two physical disks mirroring each other). It works great; however, only the disks are hot swappable. If you lose a controller or power supply, you are looking at taking the box down.  We have 15 disk modules on each of our three Model 20s: seven pair in Raid 1, plus one hot swappable disk. 

Also, I believe you are limited to 7 LUNs on the Model 20. I have forgotten for sure. Call the HP Response Center or your CE to confirm.

We also have two 12H AutoRAID arrays on our HP3000 979/400. They are completely hot swappable compared to our aging Model 20s.

Cynthia Bridges-Fowler
HP3000 System Administrator
North American Salt Company
a division of Compass Minerals Group
[log in to unmask]
http://www.compassminerals.com/    

>>> Stuart Diamond <[log in to unmask]> 03/24/03 10:22AM >>>
Can someone advise if the model 20 disk array on the entire system will =
work like software mirroring.  Will this replace the need for software =
disk mirroring?  Sabing us a bunch of money if software costs?  It will be =
hot swapable if we use J-Bods.

Stu Diamond
HP Systems Manager
Symbol Technologies Inc.
=20
Phone:   1 631 738-5521
E_Mail : [log in to unmask] 
Beeper: 1 877 409-1239

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