- Excel / Meridian Data Computer Drive User Manual

50 EXCEL MERIDIAN DATA
You can set or adjust the following items:
• Alias, if assigned
• Coercion, enable or disable
• Coercion Method
• SMART – Self-Monitoring, Analysis, and Reporting System for physical drives.
• SMART Polling Interval
• Write Back Cache Flush Interval
• Enclosure Polling Interval
• LUN Affinity
Upgradable items
You can upgrade the following items:
• Boot loader Version
• Firmware Version number
• Software Version number
• Memory Size
Viewing Controller Statistics
To view controller statistics:
1. Click the Subsystem icon in Tree View.
2. Click the Controllers icon.
3. Click the Controller icon.
4. Click the Information tab in Management View and select Statistics from dropdown menu.
Clearing Statistics
Modifying Controller Settings
To modify Controller settings:
1. Click the Subsystem icon in Tree View.
2. Click the Controllers icon.
3. Click the Controller icon.
4. Click the Settings tab in Management View.
5. Make the following settings as needed:
• Enter a name into the Alias field.
Maximum of 48 characters. Use letters, numbers, space between words, and underscore. An alias is
optional.
• Fibre Channel models only. Check the Enable LUN affinity box to enable the LUN affinity feature.
• Check the SMART Log box to enable the Self-Monitoring, Analysis, and Reporting System (SMART).
• Enter a polling interval (1 to 1440 minutes) in SMART Polling Interval field.
• 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.
• 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.
• Enter a time interval (1 to 12 seconds) in the Write Back Cache Flush Interval field.
• Enter a time interval (15 to 255 seconds) in the Enclosure Polling Interval field.
• Check the Adaptive Writeback Cache box to enable the Adaptive Writeback Cache feature.