BackupExec 12.5 backup solution - SLOW!
I have inherited a backup solution which uses BackupExec 12.5 and I am having trouble with extremely slow backup times. Generally they are almost 24 hours including verify which cannot be right and as the backup time has only increased despite decreasing the amount of data I could do with a little help to try and get the backup times down to a more realistic time.
Firstly I shall explain the solution:
Software: BackupExec 12.5 media server running on Windows Server 2008 64-bit. This server is also the main file server.
Hardware: BackupExec 12.5 Media/File server -
Spec: Intel Xeon E5310 1.60 GHz, 8GB RAM and 1 Gbps NIC.
Storage: HP SAN configured by a hardware RAID and formatted as one 5 ish TB NTFS partition. This is used for the main data storage.
HP Disk Array configured by a Windows software RAID (as it wouldn't work in a hardware RAID) and formatted as one 5 ish TB NTFS partition. This is used for backup storage.
HP Tape LT03 drive.
BackupExec 12.5 software configuration: Media server has been configured with one daily backup selection list. This currently includes the data files stored on the locally connected HP SAN (currently 1.52 TB), system states for two DC's, system state of an exchange server, exchange database, system state of print server, shadow copy components of print server (not sure what this does and if its needed?), and a few shared folders on a couple of other servers. All of these servers are of good specification. I did remove a very old server recently but this made no difference to the backup time.
Two folders have been created on the HP disc array. One called Full and the other Differentials. Both of these have corresponding backup to disc folders under devices. Both were originally configured with over wright protection of 27 days but recently I have had to decrease these to 3 weeks and 1 week respectively due to low disc space. Because of this I believe our backup storage has basically reached capacity and should be increased if we continue to use this solution for the foreseeable future.
Backup jobs have been created and use the selection list I described above:
Mon, Tues, Weds, Thurs Differential daily backups to the Differential folder.
Fri 1 Full monthly backup to the Full folder. These is then duplicated to tape (currently 4 or 5 LT03 tapes).
Fri 2, fri 3 and fri 4 Differential weekly backups to the Differential folder. These are then duplicated to tape (currently about 50% of one LT03 tape).
So the server is configured to do daily differential backups and a monthly full backup. I believe this is suppose to be the fastest method as diffs only backup the changes made since the last full. Full backups are currently around 1.7 TB's and taking around 46 hours to complete, including verify. Diff backups are currently between 100 - 200 GB and are taking almost 24 hours to complete, including verify. Duplication to tape is around 4 hours which I consider reasonable. One thing that I am confused by is the job rate. This seems to increase as the job goes on and the more data there is to backup. For full backups its around 700MB/min and for diffs is between 70 - 150 MB/min. I have tried looking through the job logs to see if a particular part is transferring very slow but was unable to find any transfer speeds. Backups generally do complete successfully but the backup to disc completion time has done nothing but increase since I started here. BackupExec does seem to be pretty over complicated but I am not really an expert with it. The HP disc array is also a concern of mine with its software raid configuration and as to whether the unit is even up to the job. Perhaps this is the week link as it has also had many hard drive failures and hard drives have been replaced at different times so it does not have the exact same hard drives in each bay (however these are comparable).
I think in the long run I would like to replace the backup solution with some sort of snapshot backup as the network is in use nearly 24/7. However, if anyone could offer any suggestions for troubleshooting this I would greatly appreciate it. Let me know if I have been unlcear above too.