Re: CACHE BATT EXP 90 DAYS???

[Jerry Adams <jerry@xxxxxxxxxxxxxxx>]

It looks like the answer 
(http://publib.boulder.ibm.com/infocenter/iseries/v5r4/topic/rzaly/rzalycmaintdef.htm) 
is: It depends.

"Concurrent maintenance support is a function of system disk unit 
hardware packaging. Mirrored protection only provides concurrent 
maintenance when the hardware and packaging of the system support it. 
The best hardware configuration for mirrored protection also provides 
for the maximum amount of concurrent maintenance."


        * Jerry C. Adams
*IBM System i5/iSeries Programmer/Analyst
B&W Wholesale Distributors, Inc.* *
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rob@xxxxxxxxx wrote:
> Honestly I've lost several disk drives under RAID.  However, I've 
> experienced no downtime because of it.  The drives were hot replaced and 
> the users didn't notice a thing.  Just trying to find out what the big 
> advantage is to mirroring.  I thought with mirroring when you lost a 
> drive, you still didn't lose data, but you did have to drop the system to 
> replace the drive.  I hope I am misinformed because I fail to see the 
> advantage in that.  Perhaps that's just how it used to be?
>
> Rob Berendt
>