While the backup to a dedupe device seems to proceed very quickly, the migration of the files seem to max out at 10Mbps - despite a dedicated 30Mbps line.
As this was going across the Internet I assumed it was just an issue with the it's inherent unreliability, howevcer I did a bit of searching and found that users of other backup systems were talking about tweaking the number of streams to improve upload speeds.
One call the CA later, and I had my answer. By default AS has been set up to use 4 streams. I increased the number to 8 and saw a doubling in upload speeds!
Here's how you do it:
Open up Regedit:
Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ComputerAssociates\CA ARCServe Backup\Base\TapeEngine\
Find the group associated with the cloud device you have created (in this case CLDMAIL)
The default entry for CLOUD_THREADS is 4, which gets you 10Mbps, and each increment of 4 get's you another 10Mbps.
You'll need to restart all the ArcServe services via CSTOP and CSTART (found in C:\Program Files (x86)\CA\ARCserve Backup)
And there you have it - much faster upload speeds.
I hope this tip helps you out, please click on an Ad to show your appreciation.