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Netbackup for EV restores take up twice as much "size on disk"

RT1
Level 2

Netbackup 7.5.0.5   -   windows 2008 R2     -     EV9.0.3.1164

During restore of the Open Partitions, the restore takes up twice as much "size on disk" as related to the size of the data.

This repeatedly causes the restore to fail as it fills up the disk:

 

6/20/2013 10:12:58 AM - begin reading
6/20/2013 1:37:20 PM - Error bptm(pid=6216) cannot write data to socket, 10053    

6/20/2013 1:37:23 PM - Error bptm(pid=6216) more than 10 files were not restored, remaining ones are shown in the progress log.
6/20/2013 1:37:26 PM - Critical bpbrm(pid=13444) from client d0app69: FTL - socket read failed     
6/20/2013 1:37:26 PM - Info tar32(pid=736) done. status 23          
6/20/2013 1:37:26 PM - Info tar32(pid=736) done. status: 23    

 

Can someone help me to resolve this issue? 

1 ACCEPTED SOLUTION

Accepted Solutions

Nicolai
Moderator
Moderator
Partner    VIP   

This can happen if the destination file system is formatted with a different cluster size than the source. Let's say you go from a 4K to 64K size. The smallest allocation unit is once cluster. If a file is 4K it will take up 64K. You got 60K of slack then.

How To Determine Your Hard Disks Cluster Size

http://support.microsoft.com/kb/245436

View solution in original post

2 REPLIES 2

Nicolai
Moderator
Moderator
Partner    VIP   

This can happen if the destination file system is formatted with a different cluster size than the source. Let's say you go from a 4K to 64K size. The smallest allocation unit is once cluster. If a file is 4K it will take up 64K. You got 60K of slack then.

How To Determine Your Hard Disks Cluster Size

http://support.microsoft.com/kb/245436

RT1
Level 2

Thank you Nicolai.  I do appreciate your quick response.  Sorry for my delay.  So, this does look like you're on the right track.  The E: drive holds the EV stores. 

E: shows 32768 bytes in each allocation unit.

C: shows 4096 bytes in each allocation unit.

So, what do I change in Netbackup for the restore?  The restore has the same source and destination from a recent backup, but restores twice as much data as seen on the Windows 2008 R2 E: properties "size on disk"???

 

E:\>chkdsk E:
The type of the file system is NTFS.
Volume label is DATA.

WARNING!  F parameter not specified.
Running CHKDSK in read-only mode.

CHKDSK is verifying files (stage 1 of 3)...
968800 file records processed.
File verification completed.
0 large file records processed.
0 bad file records processed.
0 EA records processed.
0 reparse records processed.
CHKDSK is verifying indexes (stage 2 of 3)...
3984306 index entries processed.
Index verification completed.
5 unindexed files processed.
CHKDSK is verifying security descriptors (stage 3 of 3)...
968800 security descriptors processed.
Security descriptor verification completed.
11926 data files processed.

 104856190 KB total disk space.
  49289376 KB in 956851 files.
    682240 KB in 11928 indexes.
         0 KB in bad sectors.
   1035454 KB in use by the system.
     65536 KB occupied by the log file.
  53849120 KB available on disk.

     32768 bytes in each allocation unit.
   3276755 total allocation units on disk.
   1682785 allocation units available on disk.

E:\>C:

C:\Documents and Settings\adm-tmatt779>chkdsk C:
The type of the file system is NTFS.

WARNING!  F parameter not specified.
Running CHKDSK in read-only mode.

CHKDSK is verifying files (stage 1 of 3)...
267104 file records processed.
File verification completed.
302 large file records processed.
0 bad file records processed.
0 EA records processed.
2 reparse records processed.
CHKDSK is verifying indexes (stage 2 of 3)...
1085001 index entries processed.
Index verification completed.
5 unindexed files processed.
CHKDSK is verifying security descriptors (stage 3 of 3)...
267104 security descriptors processed.
Security descriptor verification completed.
4196 data files processed.

  10474348 KB total disk space.
   8438216 KB in 262387 files.
    111784 KB in 4198 indexes.
         0 KB in bad sectors.
    323876 KB in use by the system.
     54432 KB occupied by the log file.
   1600472 KB available on disk.

      4096 bytes in each allocation unit.
   2618587 total allocation units on disk.
    400118 allocation units available on disk.

C:\Documents and Settings\adm-tmatt779>