Tomorrow the Balder Technology Group is publishing a new white paper entitled Impact of Free Space Consolidation On Windows File System Performance. The president and CEO of Balder Group is David Goebel. Goebel was part of Microsoft's 4-person Windows NT file system team in the early '90s that architected, designed and implemented NTFS. Goebel and his company continue to do file system and kernel work for Microsoft, including the design of the new exFAT.sys file system released in Vista SP1 and Windows Server 2008. As Goebel says, he "gave the second half of his twenties developing and debugging Windows NT." Suffice it to say, there are not many more people in the world, within Microsoft or out, who know how the NTFS file system works more than Goebel.
The paper gets into the importance of free space consolidation. As any observer of PerfectDisk knows, we have been the leaders in this area for a long time, with others now starting to realize its importance, and giving it more lip service. For example, without free space consolidation, write performance improvements can be lost. While the paper addresses several key points, one in particular is especially interesting:
"PerfectDisk 2008's emphasis on free space consolidation provides performance improvements beyond those of Diskeeper(R) 2008 and the built-in defragmenter. Indeed, the largest chunk of contiguous free space ended up being smaller after Diskeeper finished defragging."
This contiguous free space issue is also important for the new solid state storage devices (SSD) coming out. I'll be getting into this more later, but a key point is that without free space consolidation on SSDs, the benefit is lost. Just like on the drives you're using today.
In this case, bigger IS better. And smarter, and faster.
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