App to Show Me Difference in Disk Usage From a Week Ago?

[jason.siegel]

Is there some app that can show me, based on my Time Machine backups or something, how my disk space is being used in comparison to a week ago? A week ago, I was using 150 gigs or so. Today, I'm using about 90. I have no idea where those 60 gigs of files disappeared to. Although I did install iTunes 11, which moved some things to the cloud, it wasn't 60 gigs worth.

Thanks.

[GGJstudios]

If you're wondering what "Other" category in the Lion/ML storage tab is about, this may help explain:

What is this "Other" in the storage tab? What is eating my space

For space issues not explained by the above, there are a few things you can try, some of which may or may not apply:

• Begin by restarting your computer as a first step. This sometimes resolves issues.
  
  
• For Time Machine users on notebooks running Lion or later, space may be consumed by Time Machine local snapshots, which can be disabled.

  OS X: About Time Machine's "local snapshots" on portable Macs

• Check to see if some of the space is being used by your sleepimage file.
  
  
• Check the System Memory tab in Activity Monitor to check page outs and swap used. If swap used is significant, restart your computer and track that value under your normal workload. If you have significant page outs under normal use, you could benefit from more RAM.
  
  
• Search with Finder to see if the space is being consumed by a very large file or several large files. Adjust the 50GB in the illustration to whatever size you deem appropriate.

  

• Use OmniDiskSweeper, JDisk Report, Disk Inventory X, DaisyDisk or GrandPerspective to see how space is being used on your drive. Some of these apps may show more detail than others, so try several.
  
  
• Check your drive with Disk Utility: Using Disk Utility to verify or repair disks
  
  
• Try re-indexing your drive: Spotlight: How to re-index folders or volumes

Here are a few resolutions found by others with the same question:

• Encrypted drive
• Time Machine backup files and needed disk repair
• App filling log file
• App or file was 89GB
• Drive needed to be re-indexed
• Time Machine backup file
• Large app cache file
• Garageband files and video podcasts
• Oversized email being duplicated
• Another email issue

Freeing up space in Mac OS X

How OS X and iOS report storage capacity

[jason.siegel]

Thanks. That info seems to be about freeing up space; I almost have the opposite problem. Do you mean to imply that perhaps my Time Machine local snapshots, e.g., have cleaned themselves up?

[GGJstudios]

Originally Posted by jason.siegel

Thanks. That info seems to be about freeing up space; I almost have the opposite problem. Do you mean to imply that perhaps my Time Machine local snapshots, e.g., have cleaned themselves up?

It's not just about freeing up space, but about accounting for how space is being used. There are many factors that can account for increases or decreases in drive space being used, such as TM backup files, swap files that disappear on restart, trash being emptied, reindexing, etc.

[jason.siegel]

Thanks!