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LenelS2 EVA 54 User Manual
• Reassigned Block Threshold range is 1 to 512 blocks.
• Error Block Threshold range is 1 to 2048 blocks.
3. Click the Submit button.
Transition
Transition is the process of replacing a revertible spare drive that is currently part of
a disk array with an unconfigured physical drive or a non-revertible spare drive.
Transition Rate
To change Transition Rate setting the in Background Activities Settings menu:
1. Click the Transition Rate drop-down menu and choose a rate:
• Low – Fewer system resources to Transition, more to data read/write
operations.
• Medium – Balances system resources between Transition and data read/write
operations.
• High – More system resources to Transition, fewer to data read/write
operations.
2. Click the Confirm button.
Media patrol
Media Patrol is a routine maintenance procedure that checks the magnetic media on
each disk drive. Media Patrol checks are enabled by default on all disk arrays and
spare drives. Media Patrol is concerned with the media itself, not the data recorded
on the media. If Media Patrol encounters a critical error, it triggers PDM if PDM is
enabled on the disk array.
Media Patrol Settings
Media Patrol is enabled or disabled using the Background Activities menu or you can
create a schedule to run Media Patrol.
• To enable Media Patrol, click on the Subsystem in Tree View then click on the
Background Activities menu tab. Click to check the Enable Media Patrol option.
Notice also that the Auto Rebuild option is here as well. If you want to
automatically begin rebuilding a logical drive as soon as a faulty drive is replaced,
make sure this option is enabled.
• To begin Media Patrol manually, click on the menu expander to the right of the
Background Activities tab and scroll down and select Start Media Patrol to see
the Start Media Patrol menu. Then click on the Start button.
• To schedule Media Patrol, click on the menu expander to the right of the
Scheduler tab and scroll down and select Add Media Patrol Schedule to open the
schedule menu. Use this menu to add a Media Patrol schedule.