When you use DoubleSpace Manager to change the size of a compressed
drive, a screen similar to the following is displayed:
Drive C: Drive H:
Current drive size: 189.13 MB 101.00 MB
Current free space: 149.26 MB 2.47 MB
Minimum free space: .12 MB .54 MB
Maximum free space: 128.55 MB 76.71 MB
New free space: 125.30 MB** [2.47 ] MB
** based on an estimated compression ratio of 2.0 to 1.
NOTE: The numbers above are examples only.
The value for new free space is accurate. (It will be the new size of
the compressed drive after resizing.) However, the value for new free
space is based on an ECR equal to the current ACR, not the current ECR
as DoubleSpace suggests.
This discrepancy can cause misleading values for minimum free space
and maximum free space. In particular, maximum free space is often
less than the current free space, as seen in the above example.
NOTE: When DoubleSpace resizes a compressed drive, it changes the ECR
from its current value to a new value equal to the current ACR.