LenelS2 EVA 54 User Manual
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• Medium – Balances system resources between Initialization and data
read/write operations.
• High – More system resources to Initialization, fewer to data read/write
operations.
2. Click the Submit button.
Redundancy check
Redundancy Check is a routine maintenance procedure for fault-tolerant disk arrays
(those with redundancy) that ensures all the data matches exactly. Redundancy
Check can also correct inconsistencies.
Note
: You can use the scheduler to set up a Redundancy Check Schedule. To set
up a schedule, click the menu expander to the right of the Scheduler tab and select
Redundancy Check Schedule.
Redundancy Check Rate
To change Redundancy Check Rate setting the in Background Activities Settings
menu:
1. Click the Redundancy Check Rate drop-down menu and choose a rate:
• Low – Fewer system resources to Redundancy Check, more to data
read/write operations.
• Medium – Balances system resources between Redundancy Check and data
read/write operations.
• High – More system resources to Redundancy Check, fewer to data read/write
operations.
2. Click the Submit button.
PDM
Predictive Data Migration (PDM) is the migration of data from the suspect physical
drive to a spare drive, similar to rebuilding a logical drive. But unlike Rebuilding, PDM
constantly monitors your physical drives and automatically copies your data to a
spare drive before the physical drive fails and your logical drive goes Critical.
PDM Settings
To change PDM setting the in Background Activities Settings menu:
1. Click the PDM Rate drop-down menu and choose a rate:
• Low – Fewer system resources to PDM, more to data read/write operations.
• Medium – Balances system resources between PDM and data read/write
operations.
• High – More system resources to PDM, fewer to data read/write operations.
2. Highlight the current values in the block threshold fields and input new values.
