Backup system

Have you considered backup to the 'cloud' ( i hate using that term ) something like Carbonite Pro http://www.carbonite.co.uk/ an agent installed on each PC which syncs any file changes to online storage. You have the option to administer and manage the whole collection and users can be provided with access to restore themselves....

Sorry, the correct URL for the pro version which offers the business extras

http://www.carbonite.com/business/default

It depends somewhat on your internet connection and data amounts, but considering backup hardware, agents and software needed to perform large scale client backups it may be economical to use...

i need a backup to store inhouse only

Do you need to backup all workstations (what OS) or is it an option to store the data centrally and back THIS up?

And are you clients always left on ? or do you want client push backups.

You have many options depending on 1) cost, 2) if the clients are always on and 3) what type of data is on the clients.

1) http://www.handybackup.net/backup-server.shtml (cheaper aimed at small business)
2) http://www.symantec.com/business/products/family.jsp?familyid=backupexec (also kinda cheap, but unless you only want share backup on clients, it can get expensive buying client agent packs).

others include Arcserve, netbackup etc etc

Any requirements would help..

Netbackup 7.01 is a great end to end solution for backing up PC's and servers including virtual servers.  The Netbackup client is very powerful and allows running host based and client based backups and archiving solutions.  Also has deduplication at the client side for faster backups.  Regardless of OS it is a complete solution for local and remote backups and incorporates with all storage systems.  

Thanks