yes it slows. u are right but then u are wrong again.. its
faster in the sense when you open and read the data..
when data are saved to a compressed disk, it takes around 10% more
time to save into hard disk due to compression of files.
but then when its time to read them, its faster by 10%( or more).
mainly because the data are expanded in the RAM.. ram is running in
high frequency.. faster than your hard disk rotates.. thus it saves
10% of the time.
overall, it depends on TS usage. if u frequently read and save the
same data in your drive, i recommend not to compress it.
hoewever, its for storage... backup..or just to read datas...the
same data in the drive, its ok to compress it. but beware of the
disavantages listed in wiki.
Note: u wont feel the effect unless u are reading a file like 1GB
of size or more
