Product manual

VessRAID 1000f, 1000i, 1000s Product Manual
72
2. In Management View, click the Background Activities tab and choose
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.
Running Background Activities
To run a background activity from the Background Activities tab:
1. In Tree View, click the Subsystem icon.
2. In Management View, click the Background Activities tab and choose one
of the following from the dropdown menu.
• Media Patrol – See “Running Media Patrol” on page 73
• Rebuild – See “Rebuilding a Disk Array” on page 163
• PDM – See “Running PDM” on page 73