OSM Migration Guide (G06.26+)

OSM Migration Guide—527273-010
B-1
B Memory Guidelines for OSM
For the minimum hardware and software requirements for OSM, see Section 2,
Preparing for OSM. This section provides guidelines to help you determine how much
additional PC memory (beyond the minimum of 256 MB) you might need to run OSM,
as determined by your needs.
Because the OSM Service Connection uses Java-based routines for faster, more
accurate display of system status, OSM requires more PC memory than TSM.
Memory required to support other active applications on the PC should be added to
these figures to arrive at the overall memory needed. The actual memory amount used
for a given situation might not be easy to determine. HP recommends that you upgrade
the memory size, as much as is practical, to anticipate future memory needs.
Guidelines for Determining Memory Needs
Example 1: A customer has four production nodes, each with 16 processors. They are
all clustered together using ServerNet Cluster 6780 Switches. The customer has two
workstations, each displaying all four systems. There are 32 enclosures, and two
cluster switches. Memory required is:
This customer should have 1 GB of memory in each PC.
Component or Activity Memory Used Comment
Initial session: two processors in
first enclosure
80 MB One window open to display a
single system, regardless of size
Add for each additional session
(another system or another window
on the same system)
80 MB OSM can display up to 10 systems
on the same workstation
Add for each additional enclosure,
for all systems being managed
10 MB Processor or I/O enclosure
Add for each 6780 switch 30 MB Per pair of switches (count X and Y)
Unit Amount Per Unit Extended Amount
Base enclosure, first session 80 MB 80 MB
3 additional sessions 80 MB 240 MB
31 additional enclosures 10 MB 310 MB
One pair of 6780 switches 30 MB 30 MB
Total 660 MB