Metrocluster with Continuous Access XP P9000 for Linux Version B.01.00.10 Release Notes

Additional Notes on Disks, Logical Volumes, and Filesystems
The following are the guidelines for the management of disks, LVM storage groups, logical volumes,
and filesystems in Metrocluster with Continuous Access XP P9000 for Linux packages:
• Metrocluster does not verifies the status of the host ports. Therefore, it is assumed that at least
one storage link is functional, otherwise the storage group activation fails.
• A given file system must not reside on more than one P9000 frame for either the PVOL or the
SVOL.
• A given storage group (LVM volume group) must not span across more than one P9000 frame
for either the PVOL or the SVOL.
• Each host must be connected to only the P9000 series disk arrays that contain either the PVOL
or the SVOL. A given host must not be connected to both the PVOL and the SVOL of a
Continuous Access pair except when using Remote Command Device configured over extended
SAN.
• When using the paircreate command to create PVOL/SVOL Continuous Access pairs,
specify the -c 15 switch to ensure the fastest resynchronization in order to reduce vulnerability
to a rolling disaster.
• When using the pairresync command to resynchronize PVOL/SVOL Continuous Access
pairs, specify the -c 15 switch to ensure the fastest resynchronization in order to reduce
vulnerability to a rolling disaster.
• HP recommends you to use the disk monitor for effective and persistent monitoring of disks.
For more information, see Creating a Disk Monitor Configuration in Managing HP Serviceguard
A.11.20.10 for Linux available at http://www.hp.com/go/linux-serviceguard-docs.
Compatibility Information and Installation Requirements
Installation and configuration of Metrocluster with Continuous Access XP P9000 for Linux must be
done on all the cluster nodes as is done for any other Serviceguard package.
NOTE: For more information on support, compatibility and features for Metrocluster with
Continuous Access XP P9000 for Linux Version B.01.00.00, see Serviceguard Disaster Recovery
Products Compatibility and Feature Matrix (Metrocluster Continuous Access XP P9000) available
at http://www.hp.com/go/linux-serviceguard-docs.
To use Metrocluster with Continuous Access XP P9000 for Linux, the following hardware and
software must be installed and configured on all nodes in the cluster.
Hardware Requirements
The following lists the Microcode versions and compatible HP Storage P9000 or XP disk array
models that are required for Metrocluster with Continuous Access XP P9000 for Linux.
HP Storage Disk Array Requirements
HP Storage Disk Array XP20000/XP24000 with the following:
• Microcode version 60-04-04-00/10 or later
HP Storage P9500 Disk Array with the following:
• Microcode version 70-01-04-00/00 or later
For latest information on the supported microcode versions of P9000 disk array, see Serviceguard
Disaster Recovery Products Compatibility and Feature Matrix (Metrocluster Continuous Access XP
P9000).
RCP/LCP Continuous Access boards must be installed and used in pairs for redundancy. Multiple
ports on a single board may be used to improve performance, or to connect to different XP/P9000
8 Metrocluster with Continuous Access XP P9000 for Linux Version B.01.00.10 Release Notes