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Write behind caching and network drives

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  #1  
Old 05-21-2004, 08:01 AM
Default Write behind caching and network drives



I would like to confirm what effect disabling write behind
caching has on network drives. ( I suspect network drives
do not use write behind caching and disabling it will have
no effect )

O/S Win98SE.

I have been trying to confirm weather disabling the write
behind cache has any effect on network drives. From what I
can find the same cache is used for all drives, but
network requests are send to the Network Redirector for
networked drives. What I cannot find is any documentation
on what effect changing the settings on the Write behind
Cache will have on network drives.

Could you please direct me to an article that either
confirms the write behind cache effect network drives or
does not in Window 98SE.



Simon
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  #2  
Old 05-21-2004, 12:05 PM
Alphonse
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Default Re: Write behind caching and network drives

As far as I know, it is simply a way to avoid data loss... since write
behind caches data and takes a few seconds to complete, if the network
connection was lost, so could the data, specially if moving files.
Basically, it is the equivalent to copying and then deleting instead of
moving, for assurance reasons. Also, when Saving to a network drive, the
you might think that it is saved before it actually is and close the app;
again, upon an untimely disconnect the data will not exist neither here nor
there.

"Simon" <(E-Mail Removed)> wrote in message
news:1007501c43f01$686fefa0$(E-Mail Removed)...
I would like to confirm what effect disabling write behind
caching has on network drives. ( I suspect network drives
do not use write behind caching and disabling it will have
no effect )

O/S Win98SE.

I have been trying to confirm weather disabling the write
behind cache has any effect on network drives. From what I
can find the same cache is used for all drives, but
network requests are send to the Network Redirector for
networked drives. What I cannot find is any documentation
on what effect changing the settings on the Write behind
Cache will have on network drives.

Could you please direct me to an article that either
confirms the write behind cache effect network drives or
does not in Window 98SE.


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  #3  
Old 05-21-2004, 01:00 PM
Paul Chitescu
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Default Re: Write behind caching and network drives

Write behind only applies to local storage at a lower level than the
filesystem (sectors in partition level).

There is absolutely no effect of this local setting over files opened from a
remote server but it does have an effect on files opened by remote computers
on the local one (if acting as file server).

Using a mapped drive makes no difference - in the end the redirector turns
all paths/filenames from mapped drives into UNC format and that's all that
matters.

--
Paul Chitescu
(E-Mail Removed) http://pchitescu.null.ro/ ICQ:22641673
Any spammers will be painfully squeezed into /dev/null


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