On Thu, 30 Nov 2000 09:00:36 -0600 (Central Standard Time), "Ramaglia,
Jennifer" <[log in to unmask]> wrote:

>Hello everybody!
>
>We currently have a 996/400 running Mirrored Disk/iX on a HASS.  I am
>looking for some advice on alternatives to our current setup.  What are the
>pros and cons to moving to RAID?  Is there a RAID for dummies book out there
>somewhere...?  Any advice, comments or help would be greatly appreciated.
>

Well some of the advantages to hardware RAID (when I say hardware
RAID, I mean any external RAID solution which is supported on MPE/iX):

1. You get more RAID level choices than just RAID 1 (which is all
Mirror gives you). RAID 3 and RAID 5 give you much more usable space
for the same number of disk drives than RAID 1. Some controllers will
also let you do RAID 0/1, or RAID 0/5 (also called RAID 50) which also
lets you do hardware striping as well as RAID at the same time.

2. Hardware RAID controllers offload processing from the system CPU,
which is good. Hardware RAID controllers also have the ability to use
on-board, dedicated cache RAM, which is also good.

3. You can protect your system volume set with a hardware RAID.

4. You don't have to buy MirrorDisk/iX, pay for it's support, or patch
it anymore.