3.6.1 HP PolyServe Matrix Server Administration Guide (T5392-96018, August 2008)

Chapter 4: Matrix Administration 22
• To ensure that file times are consistent across the matrix, it is
important that all matrix servers operate with synchronized time-of-
day clocks. An NTP server is one commonly used mechanism for
synchronizing system clocks.
• The Java Management Extensions (JMX) Remote API is included in
the Java Runtime Environment (JRE) provided with the PolyServe
Management Console. The password file for JMX stores the password
in clear text. PolyServe does not create or use this file and
recommends that you do not use it. However, if you do need to use the
password file, please be aware of the security risk.
Tested Configuration Limits
PolyServe has tested Matrix Server configurations up to the following
limits:
• 16 servers per matrix
• 256 imported LUNs per matrix for FC configurations;
for iSCSI
configurations, the maximum number of connections for the iSCSI
initiator
• 128 filesystems per matrix on 32-bit systems; 256 filesystems on 64-bit
systems
• 2048 filesystem mounts per matrix
• 128 virtual hosts per matrix
• 128 service and/or device monitors per matrix (the total number of
service and device monitors cannot exceed 128)
• 4 network interface cards per server
• 1 FibreChannel port per server (unless using third-party MPIO
software)
These limits will be increased as additional testing takes place.
Theoretically, the tested configuration limits can be exceeded up to the
bounds of the operating system. If you plan to configure your matrix
beyond the tested limits, please contact HP Support for information about
any known configuration issues or concerns.