User's Manual

The size of the Utility Meter's /var directory depends on how many PPU partitions or URS devices are being
metered (plus about 500 MB of overhead). Here are some /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. 91 days
of usage data is retained in /var. For 1,000 PPU partitions to be metered:
48 * 8,000 * 91 * 1,000 = 34,944,000,000 (~35.5 GB including 500 MB of overhead) would be
required for /var.
Table 1-2 Disk Space Requirements for 1,000 PPU Partitions
Disk Space in Giga BytesLogical ExtentsFile System
2.5 GB313/opt
35.5 GB4,400/var
• URS Devices — One usage report is created on a daily basis. Each report is 8 KB in size. 91 days of
usage data is retained in /var. For 1,000 URS devices to be metered:
1 * 8,000 * 91 * 1,000 = 728,000,000 ( ~1.25 GB including 500 MB of overhead) would be
required for /var.
Table 1-3 Disk Space Requirements for 1,000 URS Devices
Disk Space in Giga BytesLogical ExtentsFile System
2.5 GB313/opt
1.25 GB157/var
You can estimate the disk space needed for /var for a combination of PPU partitions and URS devices.
NOTE: When initially configuring the Utility Meter system, you can allocate any remaining disk space to
/var to ensure there is enough space for usage reports.
1.4.3 Supported URS Platforms
The following Utility Ready Storage (URS) platforms are supported:
• XP
XP10000•
• XP12000
• XP20000
• XP24000
IMPORTANT: URS XP installations must have version 6.0 (or later) of the HP StorageWorks XP
Command View Advanced Edition software installed on all XP Command View servers. Also, version
6.0 (or later) of the HP StorageWorks XP Command View Advanced Edition Command Line Interface
(CLI) software must be installed on the Utility Meter. The version of the CLI on the meter must be equal
to or lower than the version of the CV software installed on the XP Command View server.
• EVA
EVA4000•
• EVA4100
• EVA4400
• EVA6000
• EVA6100
• EVA8000
• EVA8100
18 Introduction