VMTN: I/O Performance in vSphere, Block Sizes and Disk Alignment
May 30th, 2009
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Yes folks, it rears its ugly head again…Disk Alignment… If you have not read it yet, check out the whitepaper on disk alignment from VMware.
First, chethan from VMware posted a great thread on VMTN about I/O performance in vSphere. The start of the thread talks about I/O, then leads into anice discussion about block size. A couple of weeks ago, Duncan Epping posted a very informative article about block sizes. It convinced me to use 8MB blocks in VMFS designs.
