Re: Write Caching vs. Safe Removal
- From: Zilbandy <zil@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 18 Jul 2007 01:55:38 -0700
On Wed, 18 Jul 2007 00:22:01 -0700, Janetb
<Janetb@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Not clear on the disadvantages (possible consequences) of each
of the two options. I don't know what write caching is.
With write caching turned on, data may not get immediately written to
the hard drive when you do a 'save' in some program. The data is kept
in a queue and written to the drive when the system is less busy.
Usually this won't cause any problems, but there is a chance of losing
data. For instance, you are working on a Word document and you have a
couple other things going on in the background. You save the Word
document and 2 seconds later, the power goes out, the computer shuts
off. With the write cache enabled, there is a possibility that the
saved data has not yet been written to the hard disk, thus, you lose
the data. With the write cache turned off, when you hit the save
button, the data is saved immediately. If the little bar that
indicates your filing being saved completes, the data is on the hard
drive.
On my desktop computers, I have write cache DISABLED. On my laptop, I
have it ENABLED. The reason has to do with the time it takes for my
laptop to go into 'hibernate (something my desktop doesn't need to
do). With the write cache off, it takes several minutes for the laptop
to hibernate. Why? I don't know. If the write cache is enabled, the
laptop hibernates in 15 seconds. I'm sure someone at Microsoft could
tell you why, but WinXP seems to need the write cache enabled if you
wish to hibernate in a short time.
--
Zilbandy
.
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