Product manual

VTrak M-Class Product Manual
114
3. Click on the Controller icon.
4. Click on the Settings tab in Management View.
5. Enter a name into the Alias field.
Maximum of 48 characters. Use letters, numbers, space between words
and underscore. An alias is optional.
6. Check the SMART Log box to enable the Self-Monitoring, Analysis and
Reporting System (SMART).
7. Enter a polling interval (1 to 1440 minutes) in SMART Polling Interval field.
8. Check the Coercion Enabled box to enable disk drive capacity coercion.
When disk drives of different capacities are used in the same array, coercion
reduces the usable capacity of the larger disk drive(s) in order to match the
smallest capacity drive.
For more information, see “Capacity Coercion” on page 246.
9. Select a coercion method from the Coercion Method dropdown menu. The
choices are:
• GB Truncate – (Default) Reduces the useful capacity to the nearest
1,000,000,000 byte boundary.
• 10GB Truncate – Reduces the useful capacity to the nearest
10,000,000,000 byte boundary.
• Group Rounding – Uses an algorithm to determine how much to
truncate. Results in the maximum amount of usable drive capacity.
• Table Rounding – Applies a predefined table to determine how much to
truncate.
10. Enter a time interval (1 to 12 seconds) in the Write Back Cache Flush
Interval field.
For more information, see “Cache Policy” on page 245.
11. Select a Cache Line Size (8KB or 64KB) from the Preferred Cache Line Size
dropdown menu.
For more information, see “Cache Line Size” on page 246.
12. Click the Submit button.
The changes take effect immediately.
Enclosures
The Enclosures–Information tab provides component information about the
VTrak subsystem enclosure, including:
• Enclosure ID number
• Number of power supply units