Posts Tagged ‘mis-alignment’
Under the Covers with Miss Alignment Part 2: Linked Clones
September 22nd, 2011 | 
Author: This post is the continuation of Under the Covers with Miss Alignment: I keep hearing this rumor more and more often: It appears that both snapshots and linked clones on vSphere 4.x and 5.0 are misaligned. Not having had the time to actually put this to the test, I thought it would at least be informative to give you some more down-and-dirty information on the subject.
Posted in Storage, VDI and VMware View, VMware | 
Tags: alignment, data alignment, details, devil, linked clones, mis-alignment, misaligned, misalignment, Miss Alignment, snapshot, VMware, VMware View | 
1 Comment »
Under the covers with Miss Alignment: Full-stripe writes
In a previous blogpost I covered the general issue of misalignment on a disk segment level. This is the most occurring and the most obvious misalignment, where several spindles in a RAID set perform random I/O and misalignment causes more spindles need to seek for a single I/O than would be required when properly aligned.
Next in the series there is another misalignment issue which is rare, but can have a much bigger impact on tuned storage: Full stripe misalignment.
Posted in Storage, VMware |
Tags: full stripe, mis-alignment, misalignment, RAID10, RAID3, RAID5, write-optimized, writes |
4 Comments »
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