User's Manual

Property Definition
Cache Memory Size Displays the size of the cache memory on the controller.
Patrol Read Mode Displays the Patrol Read Mode setting for the controller. Possible
values are:
• Auto — Patrol read runs continuously on the system. When one
iteration of the patrol read is complete, the next patrol read is
scheduled to start within a period of time specified by the
controller. You do not have the option of manually starting or
stopping the Patrol Read in this mode.
• Manual — Allows you to manually start or stop the patrol read
process.
• Disabled — Indicates that the patrol read process is disabled.
For more information about patrol read, see Setting The Patrol Read
Mode and Starting And Stopping Patrol Read.
Patrol Read State Displays the current state of the patrol read process. Possible values
are:
• Ready — The patrol read process is enabled and runs when next
scheduled or when manually initiated.
• Active — The patrol read process is running.
• Stopped — The patrol read has been stopped.
For more information about patrol read, see Setting The Patrol Read
Mode.
Patrol Read Rate Displays the percentage of system resources dedicated for running the
Patrol Read operation. Patrol Read Rate changes the amount of
system resources assigned for the patrol read task. The Patrol Read
Rate can be configured between 0% and 100%, where:
• 0% — indicates the lowest priority for controllers and has the least
impact on the system performance.
• 100% — indicates the highest priority for controllers and has a
greater impact on the system performance.
Patrol Read Iterations Displays the number of Patrol Read Iterations. For more information
about patrol read, see Setting The Patrol Read Mode.
Cluster Mode Indicates whether the controller is part of a cluster configuration.
Persistent Hot Spare Displays if the hot spare is persistent. The possible values are:
• Enabled — The slot corresponding to the hot spare drive is
persistent. Any drive in the slot functions as a hot spare if the drive
is qualified to be a hot spare. If the drive contains foreign data, it is
overwritten.
• Disabled — The slot corresponding to the hot spare drive is not
persistent. If the drive is removed from the slot and any drive is
inserted, the slot stops functioning as a hot spare. You need to
manually assign the drive as a hot spare again.
Controller Tasks Enables you to configure and manage the controller. For more
information about controller tasks, see Controller Tasks.
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