| Title: | Save Set Manager |
| Moderator: | SSAG::SUSSWEIN |
| Created: | Tue Nov 15 1994 |
| Last Modified: | Wed May 28 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 72 |
| Total number of notes: | 276 |
The summary information an the end of the copy operation shows 2 more blocks read from the old save set than written to the new one. The original save set is a reel-to-reel tape. Are there extra blocks at the end of tape/start of tape in a multi-tape set. Or how do I explain the difference. This save set spans two reels of tape. Jim Chapman We really like the Save Set Manager. We have 10 years of backups that need to be converted from reel-to-reel and TA90 and can not imagine doing this job without a product like this. Well I can I just don't want to! Thanks
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 68.1 | SSAG::SUSSWEIN | never confuse having a career with having a life | Wed Feb 26 1997 14:37 | 23 | |
Jim,
There are a number of reasons that the number of blocks in an output
saveset could be different from an input saveset:
1) In the case of multi-volume savesets, each volume starts with a
summary record, and ends with an XOR record (even for an incomplete XOR
group). When putting multiple input volumes onto fewer output volumes,
it's normal for the output saveset to be 1-2 blocks/volume shorter.
Note that this applies to a normal copy, but not a copy/identical.
2) The number of blocks will also change if you change the block size
or group size.
3) Often, especially on older media, there will be rewritten blocks in
the saveset. When the saveset was originally written, blocks might
have returned a write error, and been rewritten by backup. If these
blocks were then found to be readable by SSM they would be ignored, but
would still increment the "blocks read" count. SSM generates an
informational message when it encounters a rewritten block.
Steve
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