Restore points not getting stored even if memory enough

Hello,

I ran the command vssadmin list shadowstorage and the result is :

vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool

© Copyright 2001-2005 Microsoft Corp.

Shadow Copy Storage association

For volume: (C:)\\?\Volume{aa9b9a43-1f6c-11dd-8d89-806e6f6e6963}\

Shadow Copy Storage volume:

(C:)\\?\Volume{aa9b9a43-1f6c-11dd-8d89-806e6f6e69

63}\

Used Shadow Copy Storage space: 1.655 GB

Allocated Shadow Copy Storage space: 1.93 GB

Maximum Shadow Copy Storage space: 10.251 GB

That means i have around 10GB space for restore points. But I only see 1 or

2 restore points from today or yesterday only in the list of points. The

restore points are getting removed automatically.

Any suggestions will really be appreciated.