From: Clifton, Pablo (Pablo.Clifton@BCBSFL.COM)
Date: Fri Sep 19 2003 - 17:16:34 EDT
Bruce-
My understanding is that the battery is used to protect the fast write cache on the SSA card. That way the card can store data and then write out that data to disk in larger chunks at a time for improved performance. [The write is reported to the OS as complete as soon as data is written to the cache on the SSA card- and the actual write to disk happens later.] If the battery goes bad, the SSA card will still work, but the fast write cache will be turned off.
--- Pablo Clifton UNIX Technical Services -----Original Message----- From: Harvey, Bruce T. [mailto:BTHarvey@LMUS.LEGGMASON.COM] Sent: Friday, September 19, 2003 1:30 PM To: aix-l@Princeton.EDU Subject: SSA Cache Battery Question A question for you all ... The SSA Cache Battery on our system says it wants to be replaced ... is this battery used all the time, or is it just used in case of power fluctuations? We're trying to understand this. Is the use of this battery similar to the clock battery in a PC ... if it ain't there, it don't work right? Just trying to understand, and sorry as always for the huge disclaimer at the end ... thanks in advance to all who reply! Bruce T. Harvey Legg Mason Wood Walker, Inc. Corporate Technology - Tech. Svcs. Red Run 2nd Floor - Owings Mills, MD (410) 580-7383 - BTHarvey@LeggMason.com - Blue Cross Blue Shield of Florida, Inc., and its subsidiary and affiliate companies are not responsible for errors or omissions in this e-mail message. Any personal comments made in this e-mail do not reflect the views of Blue Cross Blue Shield of Florida, Inc. The information contained in this document may be confidential and intended solely for the use of the individual or entity to whom it is addressed. This document may contain material that is privileged or protected from disclosure under applicable law. If you are not the intended recipient or the individual responsible for delivering to the intended recipient, please (1) be advised that any use, dissemination, forwarding, or copying of this document IS STRICTLY PROHIBITED; and (2) notify sender immediately by telephone and destroy the document. THANK YOU.
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