Product manual

Galaxy G3G12 / G3G16 Installation and Hardware Reference Manual
81 Section 4 Maintenance with GAM
• 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
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 select one of the following from the
dropdown menu.
• Media Patrol – See
Running M
• Rebuild – See
Rebuilding a D
• PDM – See
Running P
• Transition – See Transitioning a D
• Initialization – See
Initializing a L
• Redundancy Check – See Running R
3. In the next screen, make the choices as requested.