Chapter 5. Configuring Units
44 3ware Serial ATA RAID Controller User Guide for the Power Mac G5
4 In the text box, enter or type over the name shown.
A name can be up to 21 characters, and can include dashes and
underscores.
5 Click the Save Names button.
Setting Unit Policies
The following polices are set when you create a unit, and can be adjusted later
through settings on the Management > Controller Settings pages of 3DM.
Details about adjusting each policy are described on the following pages.
•Unit Write Cache. Determines whether write cache is enabled for the
unit. When the write cache is enabled, data is stored locally on the drive
before it is written to disk, allowing the computer to continue with its next
task. This provides the most efficient access times for your computer
system. When disabled, the computer will wait for the drive to write all
the data to disk before going on to its next task. For details, see “Enabling
and Disabling the Unit Write Cache” on page 45.
•Auto Verify. Determines whether Auto Verify is enabled for the unit.
When enabled, the Auto Verify policy causes a verify task to be
performed automatically once every 24 hours. This feature is designed to
make it easier to insure regular verification of units. If verify schedules
have been enabled, then Auto Verify will run only in the scheduled verify
time slots. When Auto Verify is disabled, you must manually specify
when you want to verify a unit, even if you have set a verify schedule. For
details, see “Setting Auto Verify for a Unit” on page46.
•Continue on Source Error During Rebuild. Determines whether ECC
errors are ignored when they are encountered during a rebuild. (ECC
errors are an indication of errors that have occurred on a particular drive
since it was last read.) When not enabled, a rebuild will abort upon
encountering an ECC error and the unit will be set to Degraded. For
details, see “Setting Continue on Source Error During Rebuild” on
page 47.
•Queuing. Determines whether NCQ (Native Command Queuing) is
enabled for the unit. When enabled for drives that support it, this policy
can improve performance. For details, see “Enabling and Disabling
Queuing for a Unit” on page 47.
Note: If you want to cancel your change before saving it, click the
Reset Names button.