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Subject: Re: FILE system speeds

Author: Eugene Nalimov

Date: 17:56:17 01/09/01

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On January 09, 2001 at 19:12:23, Dann Corbit wrote:

>On January 09, 2001 at 19:08:43, Eugene Nalimov wrote:
>
>>On January 09, 2001 at 18:49:06, Vincent Diepeveen wrote:
>>
>>>Hello,
>>>
>>>For partitions under NT2000 i can chose out of 2
>>>different formats: either NTFS or FAT32,
>>>
>>>I don't know exactly how the file systems internally work,
>>>but i wonder about next
>>>  a) what is the difference between the 2
>>>  b) what is the fastest file system to read and write huge
>>>     files (several gigabytes: about 2.5 gigabyte) with?
>>>
>>>Thanks,
>>>Vincent
>>
>>FAT32 is faster than NTFS, but NTFS is much more robust. I'd recommend NTFS
>>despite it relative slowness.
>
>If you boost the cluster size for NTFS aren't they about the same?

No. I believe (and that's from my memory, so of course I can be wrong) that when
you are writing something to NTFS disk OS is doing something to protect the
metadata, i.e. either writing it to disk immediately, or writing the transaction
into the transaction log on the disk, or doing something similar. That means
that it's much harder to totally lose the information in the case of power or
some other failure, but also means that all the writes are much slower than for
the FAT[32] case.

All journal/logging file systems have that speed disadvantage, not only NTFS.

Eugene



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