I'd tell the users that their personal mail archives are only backed up the 10th of each month. So if they add mails to it, they should do the 9th of each month if they want to be able to see it at home. Until the 9th, those mails can be read from the .ost or with webmail directly from the mailserver. So if they move their mails on the 11th of the month, they can't see them at home for a month. Their choice how to manage their own archive.
A good alternative is to switch to a glass fiber connection that is 10 to 50 times faster.
Medium sized business 2000 people.
Connected HP Backup is used to backup people’s data in HP’s Datacentre. We have 3 sites, 30Mb split across 3 sites, 10Mb each.
700 people per site (not exactly), our bandwidth is all used because of Connected HP Backup. We’re using QoS but due to the amount of people backing up, modifying files it’s just all backup traffic.
The most problematic files are .PST’s (Outlook Archive Files) but this is a critical file we need to backup, we cannot exempt it. Connected HP Backup does not know how to read .PST files so if the file was modified by 1KB it would still upload let’s say the whole 1.5GB’s. That’s not efficient at all. We also do not want to back up on file shares locally in case the user wants to access the backups from home, as It would use our upload bandwidth.
We have Office 365 however Office becomes slow and unresponsive when the .OST file reaches around 3.5GB, and if the mail box breaks for some reason you'd have to download potentially 30GB's of data over a 10Mb/s shared network. Which isn't ideal.
Question is; what would be a better way of backing up a lot of user’s data without taking all of the bandwidth? Is there a program that can read the small amount of modifications and instead of re-uploading a whole 1.5GB’s it’d just upload the 1KB edit?