HP StorageWorks XP Remote Web Console Software - Manual (Page 23)

Cache LUN XP user guide for the XP10000/XP12000 23
2. Click the PCR tab. The PCR pane appears.
Figure 7 PCR pane
PCR pane
The PCR pane displays the table of NAS channels available for PCR operations, as well as a pie chart
showing PCR cache usage. You can set the PCR cache size for management information (i-node) and log
information used by the NAS channel file system.
This pane lists the following items:
• The PCR information table shows the PCR cache size for both management information (i-node) and log
information files used to manage data on NAS channels.
• The CHN column displays the name of the NAS channel.
• The i-node column displays the cache size assigned to the area used by the NAS channel file
system for two types of management: current status management (i-node) and directory
management.
• The log column displays the cache size assigned to the area used for obtaining log information on
NAS channels.
• The PCR information area, located above the pie chart, displays two fields with PCR cache usage
information:
• Total Partial Cache Residence Size in SLPR: The total capacity, in megabytes (MB), of the disk
array’s PCR cache area
• Available Partial Cache Residence Size: The amount of the PCR cache available for use (pink area
in the pie chart).
• Used Partial Cache Residence Size: The amount of PCR cache currently in use (blue and/or yellow
areas in the pie chart).
• The pie chart uses the following colors:
• Blue: Shows PCR cache usage
• Yellow: Shows the increase in the specified size of the PCR cache
• Pink: Shows the remaining amount of available PCR cache
• The PCR operations box, located on the lower right corner of the PCR main panel, allows you to set the
PCR cache size for both management information (i-node) and log information used by the NAS
channel selected in the PCR information table. You can select several NAS channels at once.
• Use the i-node field to enter the amount of cache assigned to the area used by the NAS channel file
system for current status management (i-node) and directory management.
• Use the log field to enter the amount of cache assigned to the area used for obtaining log
information on NAS channels.