MSA1000 Hardware Components
19
HP StorageWorks 1000 Modular Smart Array Reference Guide
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For more information about the MSA1000 Controller display, see the
HP
StorageWorks 1000 Modular Smart Array Maintenance and Service Guide
.
Array Accelerator (Battery-backed Cache)
The Array Accelerator is a high-performance, upgradeable 256-MB SDRAM
DIMM read/write battery-backed cache that can increase performance in database
and fault-tolerant configurations. It performs both protected posted-write caching
and read-ahead caching, allowing data to be accessed much faster than from disk
storage.
In protected posted-write caching, data is written to the cache memory on the
Array Accelerator rather than directly to the drives. Later, when the MSA1000
storage system is idle, the controller writes the cached data to the drive array.
Controller Display
Description
1
Fault indicator (amber)
2
Display
3
Left push button
4
Up push button
5
Right push button
6
Down push button
7
Redundancy Link indicator (green)
1
2
3
4
5
6
7
