Compaq 3200 Specifikace stáhnout pdf (Strana 169)

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Compaq Smart Array 3200 Controller Reference Guide

Writer: Rickard Project: Compaq Smart Array 3200 Controller Reference Guide Comments: 340862-002

File Name: L-APPE.DOC Last Saved On: 12/7/98 9:30 AM

COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED

Controller Duplexing

Some operating systems support controller duplexing, a fault-tolerance feature

that requires two Smart Array 3200 Controllers. With duplexing, the two

controllers each have their own drives that contain identical data. In the unlikely

event of a Smart Array 3200 Controller failure, the remaining drives and the

Smart Array 3200 Controller service all requests.

Controller duplexing is not the same as duplexing the SCSI buses on a single

Smart Array 3200 Controller. Controller duplexing is a function of the operating

system and takes the place of other fault-tolerance methods. Refer to the

documentation included with your operating system for implementation.

Compaq recommends using hardware-based fault tolerance instead of controller

duplexing. Hardware-based fault tolerance provides a much more robust and

controlled environment for fault-tolerance protection.

If you choose controller duplexing, configure each Smart Array 3200 Controller

with RAID 0 to achieve maximum storage capacity. In addition, the following

fault-tolerant features will not be available: online spare, auto-reliability

monitoring, interim data recovery, and automatic data recovery.

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Compaq 3200 Specifikace Strana 169