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13110 - Advice for disk configuration
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Advice for disk configuration
Hi,We're preparing the installation of a high availability system with
MIMIX for our productive R/3, which runs on an iSeries 890. The backup
machine will be an iSeries 870, and we will create two partitions on
it, one for the development R/3 system, and the big one for a replica
of the productive R/3 system and a SAP Business Datawarehouse. Of
course, if we need to wake up the productive R/3 system on the backup
machine we will stop the BIW.
I'm looking for recommendations about the LPAR configuration, how to
share CPUs, memory, etc. Also I want to know if it's necessary to
mantain two ASPs on each partition, considering that we will have 2757
disk controllers with a lot of cache ( aprox. 235 MBytes ), mirroring
for journal ASP it's not critical as before.
In a few words we will have the following hardware in the backup
machine:
Primary partition: 3 CPUs ( 3 more available on-demand for emergency ),
20 GBytes of main storage, ASP1 with 2 controllers 2757 and and 39
disks of 36 GBytes, ASP2 with 1 controller 2757 and 6 disks of 36GB.
Seconday partition: 2 CPUs, 12 GBytes of main storage, 1 controller
2757, ASP 1 with 13 disks of 73 GB and ASP2 with 2 disks of 36 GB.
Best regards,
Joan B. Altadill
Celsa Group
Pol.Ind San Vicente s/n
08755 Castellbisbal (Barcelona)
Tel: +34 93 7730400
Fax: +34 93 7720276
Email: jaltadillZg...
Web: http://www.gcelsa.com
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