Based upon your existing situation - the fact that you want to REPLACE your
existing drives, the best method to effect your migration while minimizing
your down time is to employ a loaned HP3000 machine and employ transaction
logging on your IMAGE data bases.

You can reload from your latest backup onto the Autoraid12H (while your
production system is still up and running).

Your users will be unable to access the system only for the amount of time
necessary to apply the transaction log files against the databases and
store and restore any other files (excluding the logged data bases) that
have been modified and/or created since the backup used to reload onto the
Autoraid.


At 03:16 PM 2002-01-14, Atwood, Tim (DVM) wrote:
>More information as requested in several different emails:
>
>All our current disc drives are in the system volume set.
>
>The RAID array is intended to completely replace all disc drives. Therefore
>we will be booting the system from it.
>
>The decision to go with a 12H rather than a model 20 has already been made
>elsewhere in the company. The 12H is already on site and I am the one in
>charge of figuring out how to install it. For good or bad the 12H is what we
>are going with.
>
>I recognize the 50% rule on performance of the 12H AutoRAID. The current
>configuration is six 2GB drives and one 4GB drive for a total of 16GB,
>currently at 75% full (Approx 12GB of data). The 12H AutoRAID contains eight
>9.1GB drives for a total of 72.8GB. Even with the overhead of a RAID array,
>I think it will be a very long time before we grow to more than 50% of the
>RAID array.
>
>Thanks for all the help so far.
>
>Timothy Atwood
>Holtenwood Computing
>http://www.holtenwood.bc.ca/computing/
>for Domtar Vancouver Mill
>(Opinions expressed are mine and do not reflect Domtar)
>
>* To join/leave the list, search archives, change list settings, *
>* etc., please visit http://raven.utc.edu/archives/hp3000-l.html *

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Gilles Schipper
GSA Inc.
HP System Administration Specialists
300 John Street, Box 87651   Thornhill, ON Canada L3T 7R4
Voice: 905.889.3000     Fax: 905.889.3001
Internet:  [log in to unmask]
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* To join/leave the list, search archives, change list settings, *
* etc., please visit http://raven.utc.edu/archives/hp3000-l.html *