HP-UX 11i June 2001 Release Notes

HP-UX 11i Operating Environment Applications
HP-UX 11i Enterprise Operating Environment (new at 11i original release)
Chapter 488
B5403BA MirrorDisk/UX License for Workstations
B2491BA MirrorDisk/UX License for Servers
To make use of the LVM mirroring capability, you may want to add extra
disks to the volume group and mirror the data on to the additional disks.
Compatibility Issues
There is no need to make any changes to scripts or makefiles to make use
of the LVM mirroring capability in the SLVM environment.
NOTE SLVM mirroring is NOT supported for striped logical volumes and is
ONLY supported in a two-node environment. SLVM mirroring does not
support spared disks in a shared volume group. You should disable
sparing by using the pvchange -z n <path> command on shared
volume disks.
Process Resource Manager (PRM)
Process Resource Manager (PRM) Version C.01.08.2 enables system
administrators to guarantee CPU, real memory, and disk bandwidth
resources to users and applications on the system.
This version of PRM provides distribution of resources through shares,
hierarchical PRM groups, in-kernel memory management, a Simple
Network Management Protocol (SNMP) agent, remote management of
PRM and an improved GUI.
PRM provides a shares model of distributing resources instead of static
percentages. This model facilitates configuration changes. PRM groups
can be nested, allowing for more convenient partitioning.
Memory is controlled in the kernel, through the prm2d daemon, rather
than in user space, through the prm0d daemon.
The syntax for memory records is essentially the same. The only
difference being that the optional SUPPRESS field is no longer needed and
is ignored if present:
#!PRM_MEM:{PRMID|GROUP}:SHARES:[CAP]:::
Also, the CAP value is treated as a hard limit to the group’s memory
usage. Previously, it was a soft limit that could be crossed.