Users Guide

Property Denition
Encryption Capable Indicates whether the controller has the capability to support
encryption. Possible values are Yes and No.
Encryption Key Present Indicates whether the controller has an encryption key established.
Possible values are Yes and No.
Encryption Mode Indicates whether the controller is using Local Key Management
(LKM) or None. For more information, see Managing The
Encryption Key.
T10 Protection Information Capability Indicates whether the controller supports data integrity. Possible
values are Yes and No.
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 an interval specied 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 congured 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 conguration.
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 qualied 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
48 Controllers