Compaq ProLiant 7000 SMART-2DH Array Controller Reference Guide - Page 160
Appendix E: Upgrading or Replacing the Array Accelerator, Appendix E
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E-1 Appendix E Upgrading or Replacing the Array Accelerator The Compaq SMART-2DH Array Controller is provided with a removable 16MB 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: s 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. s 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. s The memory is Error Checking and Correcting (ECC), providing error detection and correction reliability. s 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: s You want to upgrade from 4-MB cache to 16-MB cache. s The Array Accelerator option is no longer needed. s The host SMART-2DH Controller board fails and valid data is still stored in the Array Accelerator. SMART-2DH Array Controller Reference Guide 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