looking for information Integrity vPAR vs VM

[Wally S]

has anyone seen documentation regarding the differences between vPARs and VMs on Integrity servers. Interested in any details specifically to dynamic I/O reconfiguration between vPARs, or VMs.

Thanks

[Torsten.]

This is a good link with more information:

http://h71028.www7.hp.com/enterprise/downloads/Intro_VM_WP_12_Sept%2005.pdf

and another:

http://h71028.www7.hp.com/enterprise/cache/262803-0-0-225-121.html

[Ted Buis · Accepted solution]

vPars do not have dynamic I/O reconfiguration, and memory and I/O paths are dedicated to one and only one partition. Only CPUs can "float" between partitions with vPars. However, there is very high isolation between vPars as a result. The Integrity Virtual Machines (IVM) is more flexible and supports shared I/O paths and flexible memory assignment. Since it is shared, I would say that I/O is as dynamic as any HP-UX system without partitioning. But with sharing comes the reduction in isolation. Naturally, nPars (hardware partitioning provides the most isolation). The good news is you have choices. The bad news is you have to pick one. Other vendors don't give you the option to choose. Don't forget Secure Resource Partitions are also available.