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тАО02-12-2002 04:43 AM
тАО02-12-2002 04:43 AM
Hi all,
Is 4k a good fragment size in a HFS Filesystem which block size is 32k ?
This filesystem is going to be used as Data Wharehouse(oracle).
Thank you very much for your help.
Regards.
Is 4k a good fragment size in a HFS Filesystem which block size is 32k ?
This filesystem is going to be used as Data Wharehouse(oracle).
Thank you very much for your help.
Regards.
Catch and release !!!!!!
Solved! Go to Solution.
3 REPLIES 3
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тАО02-12-2002 05:00 AM
тАО02-12-2002 05:00 AM
Solution
Data warehousing = big database files.
Why are you concerned about fragsize in a filesystem that's only likely to contain a few large database files?
I would recommend that you use a VXFS filesystem rather than HFS. As it's extent based, you don't really have to worry about the blocksize. It's much faster to recover in the event of a crash and doesn't require the 10% minfree space overhead.
Regards,
John
Why are you concerned about fragsize in a filesystem that's only likely to contain a few large database files?
I would recommend that you use a VXFS filesystem rather than HFS. As it's extent based, you don't really have to worry about the blocksize. It's much faster to recover in the event of a crash and doesn't require the 10% minfree space overhead.
Regards,
John
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тАО02-12-2002 05:41 AM
тАО02-12-2002 05:41 AM
Re: About fragment size in a HFS file system
Only use HFS if you have to, VXFS is a much better solution.
And yes 4K is a good fragment size to use in a 32K block. It is usually 8-1 or 10-1.
And yes 4K is a good fragment size to use in a 32K block. It is usually 8-1 or 10-1.
It is always a good day when you are launching rockets! http://tripolioklahoma.org, Mostly Missiles http://mostlymissiles.com
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тАО02-12-2002 06:35 AM
тАО02-12-2002 06:35 AM
Re: About fragment size in a HFS file system
Hello Rafael,
I guess the reason for you posting stems from the Database admins?
Have a look at the discussions over there:
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x6dc0c8ecad09d6118ff40090279cd0f9,00.html
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x85b479bffde7d4118fef0090279cd0f9,00.html
http://www.docs.hp.com//hpux/onlinedocs/os/11.0/tuningwp.html#diskperf
HTH,
Wodisch
I guess the reason for you posting stems from the Database admins?
Have a look at the discussions over there:
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x6dc0c8ecad09d6118ff40090279cd0f9,00.html
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x85b479bffde7d4118fef0090279cd0f9,00.html
http://www.docs.hp.com//hpux/onlinedocs/os/11.0/tuningwp.html#diskperf
HTH,
Wodisch
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