Re: how long to recover disk crash

This isn't a question of how fast does this plane fly.  There are many
implications:

A).   Simple ones:
1).   speed of processor
2).   speed of tape drive
3).   how much (arms times capacity) and speed (RPM) of disk
4).   were access paths saved
5).   were the nature of the objects/members big, or did it contain lot's
of little source members

B).   Complex ones:
6).   cross library logical dependancies (where the libraries with the LF's
came later in alphabetical order than those of the PF's, which would most
likely (but not necessarily completely blow away number 4 above).
7).   cross library logical dependancies (where the libraries with the LF's
came before in alphabetical order than those of the PF's, which would most
likely (but not necessarily completely blow away number 4 above and cause a
second restore path across the tapes).
8).   cross library journaling dependancies (which if you didn't have an
automatic way to restart journaling)
9).   an analysis mechanism to read the job log, or did you use the brute
force method

I agree that 18 hours is long, but it is not unreasonable:

Al

Al Barsa, Jr.
Barsa Consulting Group, LLC

400>390

914-251-1234
914-251-9406 fax

http://www.barsaconsulting.com
http://www.taatool.com


midrange-l-bounces@xxxxxxxxxxxx wrote on 05/20/2003 05:57:01 PM:

> A customers M170 lost a disk and I restored the system from the full
backup
> (option 21).  This took 18 hours to complete after IBM replaced the
drive.
> Is this a normal amount of time (be nice please).  There was no lost time
> between commands but sometimes it took the tape 75 minutes to process one
> command.
>
>
> Jerry
>
> Jerome Draper, Trilobyte Software Systems, since 1976
> Network and Connectivity Specialist -- Mac's, LAN's, PC's, and iSeries
> Representing Synapse, Nlynx, Netopia, CLI, HiT, and others .....
> (415) 457-3431 - (415) 258-1658fax - http://www.trilosoft.com
>
>
>
>
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