- Excel / Meridian Data Computer Drive User Manual

SECURSTOR ASTRA ES 27
5. In the Save dialog box, name the file, navigate to the folder where you want to save the log file, and click the
Save button.
Clearing NVRAM Events
To clear the NVRAM event log:
1. In Tree View, click the Subsystem icon.
2. In Management View, click the Events tab dropdown menu and select System Events in NVRAM.
3. Click the Clear Event Log button.
4. In the Confirmation dialog box, type confirm and click the OK button.
Viewing Current Background Activities
To view the current background activities:
1. In Tree View, click the Subsystem icon.
2. In Management View, click the Background Activities tab.
A list of current background activities appears, including:
• Rebuild
• PDM – Predictive Data Migration
• Synchronization
• Redundancy Check
• Migration
• Transition
• Initialization
• Media Patrol
Making Background Activity Settings
To make settings for background activities:
1. In Tree View, click the Subsystem icon.
2. In Management View, click the Background Activities tab and select Settings from the dropdown menu.
3. Click the dropdown menu to choose a priority of Low, Medium, and High for the following functions:
• Rebuild – Rebuilds the data from a failed drive in a disk array
• Synchronization – Checks the data integrity on disk arrays
• Initialization – Sets all data bits in the logical drive to zero
• Redundancy Check – Checks, reports and can correct data inconsistencies in logical drives
• Migration – Change RAID level or add physical dries to disk arrays
• PDM – Looks for bad blocks the physical drives of disk arrays
• Transition – Returns a revertible spare drive to spare status
The rates are defined as follows:
• Low – Fewer resources to activity, more to data read/write.
• Medium – Balance of resources to activity and data read/write.
• High – More resources to activity, fewer to data read/write.
4. Highlight the following PDM trigger settings and type a value into the corresponding field:
• Reassigned Block Threshold – 1 to 512 blocks
• Error Block Threshold – 1 to 1024 blocks
5. Check to enable or uncheck to disable the following functions:
• Media Patrol – Checks the magnetic media on physical drives
• Auto Rebuild – If there is a spare drive of adequate capacity, a critical disk array will begin to rebuild
automatically. If not spare drive is available, the disk array will begin to rebuild as soon as you replace
the failed physical drive with an unconfigured physical drive of equal or greater size.
6. Click the Submit button to save your settings.