need suggestion for backup software for servers over 2 sites

hi, I have two sites that have a windows 2008 server at each site, connected over a hardware VPN. Fairly simple setup.
I would like to backup the data from one server to the other site and visa versa. We have Symantec Backup Exec. but it takes to long to run, from what I understand, once it makes the backup to the remote site and it goes to do an incremental backup, it needs to scan the files at the remote site to compare data.
my problem is we only have a 0.8mb upload at each site and it takes to long.

Is there a backup software that either keeps a local copy of the backup and then copies the backup data to the remote site. or it keeps a inventory of the backup at the local site, so that it doesn't scan the remote site, only uploads new data.

please correct me if I'm wrong with Symantec and how it works
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TemodyPickalbatros, IT ManagerCommented:
what`s you backup size Full and incremental
Thomas RushCommented:
First -- it seems odd that Backup Exec would choose to do an incremental backup this way; normally an incremental (or differential) backup just checks the archive bit on the file and uses that to determine if the file needs to be backed up.  Perhaps you have it configured somehow for a non-standard backup type?

Second: You might find it more efficient to use a deduplicating backup target, which would allow the backup to be done locally, and only block-level changes would need to be replicated between sites.  This tends to be very bandwidth-efficient.

In order to implement the deduplication, I'd recommend HP Data Protector as a backup engine, with the HP StoreOnce VSA as the backup target using Catalyst data stores at both sites.  This combination will allow you to back up your data with deduplication, and let Data Protector control the replication of data from one site to the other, sending only block-level changes (plus some metadata, of course, to determine which are the 'new' blocks).

A single Data Protector Cell Manager license will cover agents on both servers.  Just add the necessary TB of Advanced Backup to Disk.  
The HP StoreOnce VSA has a free 1TB no-support license for 3 years, or can be purchased in 4TB, 10TB, or 50TB blocks.

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