Silicon Graphics COPAN 400T/TX, Руководство по обслуживанию

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COPAN 400T/TX - Service Manual 4-9
4.5 Uploading the AOR File
4.5.1 About AOR
A SGI COPAN MAID array contains power management features that spin down and power off
least-recently-used raidsets after a period of disuse or when a fixed power budget is exceeded.
On each shelf, 26 of the 27 raidsets are available for this feature. On 1TB drive, there are 52
raidsets.
Certain applications may require constant and instant access to data stored in the array. The
twenty-seventh raidset in the shelf is reserved for Always On Regions (AOR), a section of disk
that will always be spinning and available for access. An AOR configuration file is used to
define the mapping, which is specific to the application and host.
WARNING: No input or output (I/O) should be running to the shelf. Verify the customer has
stopped all such operations to the shelf before beginning this procedure.