• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 723
  • Last Modified:

SharePoint Backup

Dear all,

While trying to initiate a MOSS farm (differential) backup from Central Administration, i get the following error:

There is not enough disk space. Free additional space on your hard disk and then try again. Approximate amount of space needed: 24.14 GB. Amount of space free on disk: 23.69 GB.

The fact is: 24 GB space is required for full backup but i am only making differential backup so why it is not taking into account this? What can be done to resolve this (other than using stsadm)?


2 Solutions
Delete very old logs?

C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\LOGS

Hope that helps.
riazpkAuthor Commented:

Thanks for the reply.

Maybe i didn't clarified properly: Yes we can create more space but the question is: Why it thinks the differential backup will be 23GB (while in fact it is less than 1GB. How we can resolve this issue "WITHIN" sharepoint?

Thanks & regards,

If you don't have full back up already taken then it will take first full backup first and then it will create differential backup....
Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.


I have tested at my end. it seems that in Full and Incremental Initial requirement for space remains same for both. I am not sure but it may be because of Estimated disk space required is defined on the base of database size and no pre-calculation at the time of Differential backup.

The way a differential backup works is that a full backup takes place first, then only changes are backed up afterwards as sandipkharde mentioned above.

You can use a shared network location if you do not have enough space on your C drive
Hello , a part of your backup is a copy of all the content databases , that you have on the farm , SP Backup does not differnetiate between FULL or DIFF when it comes to the DB , it is considered one file and it changed from last backup , so it will be included,

The main purpose of the SP Backup is customization at the file system level to the 12 hive.

Hope that clear things out.
riazpkAuthor Commented:
It seems we can not make sharepoint "aware" about the diff. between full and increment backups.

Thanks to all for comments. I will close this question now.


Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now