Upgrading Or Replacing The Array Accelerator - Compaq 219700-001 - ProLiant - 1500 Reference Manual

Appendix E
Upgrading or Replacing the
Array Accelerator
The Compaq SMART-2DH Array Controller is provided with a removable 16-
MB Array Accelerator. Previous versions of the SMART-2 Array Controller
shipped with 4-MB Array Acceleration boards. The Array Accelerator is
mounted on a removable daughter board so that it may be easily removed or
replaced if necessary. Use this procedure when upgrading from the 4-MB to
the 16-MB Array Accelerator board.
The SMART-2DH Controller Array Accelerator option has several unique
features:
It accelerates data storage by temporarily caching the data at high
internal bus rates while transferring the data to the drives at their
slower write speeds.
It contains its own batteries to keep the data alive without board power,
even if the Array Accelerator is removed from the SMART-2DH
Controller.
The memory is Error Checking and Correcting (ECC), providing error
detection and correction reliability.
It may be moved to another SMART-2DH Controller to complete the
data transfer should the original SMART-2DH Controller fail.
You may want to remove or replace the Array Accelerator option board if:
You want to upgrade from 4-MB cache to 16-MB cache.
The Array Accelerator option is no longer needed.
The host SMART-2DH Controller board fails and valid data is still
stored in the Array Accelerator.
Writer: Pamela King Project: SMART-2DH Array Controller Reference Guide Comments: 295469-002
File Name: L-APPE.DOC Last Saved On: 2/27/98 12:06 PM
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
SMART-2DH Array Controller Reference Guide
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