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Netra Proxy Cache Array User's Manual

Storage Management

To View or Modify Storage Management Properties

  1. Click Storage Management in the Advance Proxy Cache Configuration page. The page shown in Figure 4-8 is displayed.

    Figure 4-8 Storage Management Properties

    Graphic

  2. Under the Storage Management heading, enter or accept values for the following properties:

High-water mark for Memory (%)

Removing of the least recently used objects in memory begins when the high-water mark is reached and ends when enough objects are removed so that the low-water mark (see following property) is reached. Note that objects removed from memory remain on disk. Enter a percentage. The default is 90%.

Low-water mark for Memory (%)

See the description of the high-water mark, above. Enter a percentage. The default is 75%.

High-water mark for Disk Cache (%)

Replacement of the least recently used objects in the disk cache begins when the high-water mark is reached and ends when enough objects are removed so that the low-water mark (see following property) is reached. Enter a percentage. The default is 90%.

Low-water mark for Disk Cache (%)

See the description of the high-water mark, above. Enter a percentage. The default is 75%.

Garbage Collection (GC) Rate (min)

Specifies how often, in minutes, the Netra Proxy Cache Server runs a full garbage collection. Garbage collection involves checking the expiration time of every object in the cache. In the course of normal operation, the Netra Proxy Cache Server removes expired objects, so that explicit garbage collection is not necessary. This feature can be of use if you have a frequent need to reclaim disk space. Note that the server does not process client requests during garbage collection. Enter a number of minutes if you want to use this feature or leave the field blank to disable garbage collection.

Time of Day for GC (HH:MM:SS)

Enables you to schedule garbage collection at an off-peak time. Time is expressed on a 24-hour clock. For example, if you want garbage collection to occur at 3:30 AM, enter 03:30:00.