1. To see the space allocated and used for SVI:
– Open Command Prompt with “Run as Administrator” option
– Type in: vssadmin list shadowstorage
– You will see Used Space, Allocated Space and Maximum Space for SVI
2. To see the restore information stored therein:
– Use in the same console command: vssadmin list shadows
3. To resize the maximum allocated space:
– Type in command: vssadmin resize shadowstorage /on=[here add the drive letter]: /For=[here add the drive letter]: /Maxsize=[here add the maximum size]
– E.g., vssadmin resize shadowstorage /on=C: /For=C: /Maxsize=4GB
– You will see a prompt confirming resize done
– You can check the status again using the command discussed in point 1 above
4. Just to get rid of the space already consumed, but sticking to the same size of max-size as before:
– Do actions as per point 3 to set the max-size t, say, 1GB
– If you check now, most likely you’ll see that used space is now 0KB
– Do the resize again and set it back to what it was before
– Check your disk space availability in Windows Explorer, you should see the reclaim is done!
Fonte: http://indrajitc.wordpress.com/2008/03/25/reclaiming-disk-space-from-system-volume-information/