8.14.01 HP Utility Meter User's Guide (June 2009)
are being metered (plus about 500 MB of overhead). Below are calculations for the /var directory disk
space requirements for 1,000 metered instances:
• PPU Partitions — 48 usage reports are created on a daily basis. Each report is 8 KB in size. 90 days
of usage data is retained in /var. For 1,000 PPU partitions to be metered, /var should be
approximately 35.5 GB in size:
48 * 8,000 * 91 * 1,000 = 34,944,000,000 (~35.5 GB including 500 MB of overhead) would be
required for /var.
• URS Disk Arrays — One usage report is created every two hours. Each report is 8 KB in size. 90 days
of usage data is retained in /var. For 1,000 disk arrays under a URS contract, /var should be
approximately 9.5 GB in size:
12 * 8,000 * 91 * 1,000 = 8,736,000,000 (~9.5 GB including 500 MB of overhead) would be
required for /var.
• URS SAN Switches — One usage report is created every six hours. Each report is 8 KB or less in size.
90 days of usage data is retained in /var. For 1,000 SAN switches under a URS contract, /var
should be approximately 3.5 GB in size:
4 * 8,000 * 91 * 1,000 = 2,912,000,000 (~3.5 GB including 500 MB of overhead) would be
required for /var.
Table 1-2 Disk Space Requirements for /var
Disk Space in GigabytesMetered Devices
35.5 GB for 1,000 partitionsPPU Partitions
9.5 GB for 1,000 disk arraysURS Disk Arrays
3.5 GB for 1,000 SAN switchesURS SAN Switches
For any combination of PPU partitions, URS arrays or URS switches metered, use the largest size for the
/var file system mentioned above.
NOTE: When initially configuring the Utility Meter system, HP recommends you allocate any remaining
disk space to /var to ensure there is enough space for usage reports.
1.3.3 Supported URS Platforms
The following Utility Ready Storage (URS) platforms are supported:
• XP:
XP10000•
• XP12000
• XP20000
• XP24000
• EVA:
EVA4000/6000/8000•
• EVA4100/6100/8100
• EVA4400/6400/8400
1.3.4 Supported PPU Platforms
Below is a list of currently supported PPU WBEM platforms:
• HP-UX
• Redhat Enterprise Linux, versions 4 U5 and 5 U1 (not yet GA)
• SUSE Linux Enterprise Server 10 SP1
18 Introduction