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arcserve-KB : P00000445 / 754 | 17/16.5.1 | Image option and VMAgent backup finish with Success status though it is failed

Last Update: 2017-12-13 14:04:11 UTC

Problem Summary:

(1) Image option backup job completes successfully, but the backed up data size is smaller than the actual data. For example, this message is recorded in the activity log when there is 18 TB of data in a 20TB volume : 
"16.00 TB Written to Media."

From this backup data, the restore job fails with the following error:
"E11056 Error restoring file fragment. (EC=(null), FILE=&ltpath&gt)"

After applying this fix, the image backup job will fail with this message when it doesn't backup data completely : 
"E11042 Image Session &ltnumber&gt is incomplete and unusable"


(2) VMAgent Backup (enable file mode restore) completes successfully, but the restore job fails with the following error:
"AE0101 Invalid UTF stream id signature: &ltnumber&gt"

After applying this fix, the VMAgent backup job will finish in incomplete status or crashes with this message for the specific volume  : 
"AW0553 Unable to create sub-session metadata for the volume &ltname&gt."


This fix addresses the problem which happens after the backup source volume is occupied with more data than the size of ( 2G x &ltAllocation Unit Size of the volume&gt ). It can happen even after reducing the data once the data exceeds this size.


Limit data sizes of backup by image option or VMagent "enable file level restore"  with the default allocation unit sizes are :
Volume Size       Default Allocation Unit Size    Limit of Image Backup
Upto 16TB                  4KB                                      8TB
16TB - 32TB                8KB                                      16TB
32TB - 64TB                16KB                                     32TB
64TB - 128TB               32KB                                     64TB
128TB - 256TB              64KB                                    128TB










Products Affected:
Arcserve Backup. Affected release :17; 16.5.1;

Product Installation Instructions:

Arcserve Backup r17
(1) Unzip P00000445.zip
(2) Run P00000445.exe

Arcserve Backup r16.5.1
(1) Unzip P00000754.zip (2) Run P00000754.exe



Related Fix List:
Fix (P00000445 for product: Arcserve Backup release: 17) is available please click here to download and apply.
Fix (P00000754 for product: Arcserve Backup release: 16.5.1) is available please click here to download and apply.

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