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тАО11-09-2009 08:04 AM - last edited on тАО03-10-2015 01:09 AM by Maiko-I
тАО11-09-2009 08:04 AM - last edited on тАО03-10-2015 01:09 AM by Maiko-I
EVA 4400 Default i/o Block Size
Hi Storage-Fans!
I've got a question from a customer :
What is the Default i/o Blocksize of a new created Vdisk? The want to align this OS-partition with the i/o blocksize of the Vdisk.
I've searched for this but cannot find any info about this.
Maybe someone can give me some additional info?
Thanks
Eric
Netherlands
P.S. This thread has been moevd from Disk, Disk Arrays (Retired Discussion Board) to Storage Area Networks (SAN) (Enterprise). - Hp forum Moderator
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тАО11-09-2009 09:12 AM
тАО11-09-2009 09:12 AM
Re: EVA 4400 Default i/o Block Size
For the first-generation series 3000/5000 there was a customer advisory that suggested to align the partition to a 64-block (32-KByte boundary) to prevent a performace loss in some special write-intense VRAID-5 situations. It was claimed that alignment was not necessary in later products.
Of course it does not hurt if you do it anyway. On a Microsoft page it was written that they do not agree with "some vendor claims" that alignment did not improve performance.
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тАО11-10-2009 01:34 AM
тАО11-10-2009 01:34 AM
Re: EVA 4400 Default i/o Block Size
Thanks
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тАО11-10-2009 01:45 AM
тАО11-10-2009 01:45 AM
Re: EVA 4400 Default i/o Block Size
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01204487