Why Is N360_BACKUP So Massive?

Norton Security | Norton Internet Security
1

I've recently noticed a significant reduction of HD space on my PC,

so I decided to see where it was being used.

(I'm running Vista Home Premium 64bit on a 600GB HD.)

 

I Found This: 

Administrator Account : 5GB

Public Access Account: 15GB

PUBLIC FOLDER: 45GB

FACTORY_RESTORE: 13GB

 

And then...

N360_BACKUP: 365GB 

 

I would like to know why it is that my Norton back-up file is 4x bigger 

than the amount of memory being accessed on a regular basis, 

& what exactly I can do to reduce its size.

2

Which steps would I take to get to that option?

All I can find is run "Run Backup Now"

3

To delete a Backup Set
1. In the Norton 360 main window, move the pointer over Backup, and then click Manage Backup Sets.
2. On the Summary tab, in the Backup Set Name drop-down list, select the Backup Set that you want to delete.
3. Under Things you can do, click Delete this backup set.
4. In the confirmation dialog box, click Yes.

4

I've recently noticed a significant reduction of HD space on my PC,

so I decided to see where it was being used.

(I'm running Vista Home Premium 64bit on a 600GB HD.)

 

I Found This: 

Administrator Account : 5GB

Public Access Account: 15GB

PUBLIC FOLDER: 45GB

FACTORY_RESTORE: 13GB

 

And then...

N360_BACKUP: 365GB 

 

I would like to know why it is that my Norton back-up file is 4x bigger 

than the amount of memory being accessed on a regular basis, 

& what exactly I can do to reduce its size.