Most defragging s/w now has the ability to ‘run in background’.
Hoever ‘Full’ & ‘Offline’ defraging are still required to maintain a fully defragged drive.
The applies in particular to Vista, which locks files. Preventing ‘background’ defragging in any shape.
Full defragging will defrag most of this area.
However there will remain a ‘hardcore’ lock of some key files even then.
Hence the need ( again more so with Vista) for ‘Offline’ defragging.
Another thing to note is that some programs defrag in a different priority to standard defrag.
Meaning that a proper complete defrag is never acheived.[/QUOTE]
You are right, but IME Diskeeper 2k8 works a bit differently since it’s optimized for ‘background’ defrag with low resource consumption, rather than being a manual defragger with an optional ‘background’ mode. It’s meant to be installed and turned on…and that’s it…almost nothing else to do. It was designed for corporate applications (servers etc) and the tech made it’s way to the desktop editions I think.
The locked files that needed an ‘offline defrag’ are usually the MFT and page file, but DK defrags most of the MFT ‘online’ itself. Only the last stage needs to be defragged ‘offline’ and it’s usually very short. It also actively minimizes the fragmentation of the MFT by enlarging it ‘in advance’ when required. I think same goes for PF, but not 100% sure.
Defragging vista if VSS is enabled on partitions with smaller than 16k cluster size is quite tricky. Excessive file movement apparently fools the VSS and triggers the creation of new shadow copies/SRPs thereby deleting older ones. Or so, i’ve read.
So, it’s good to defrag Vista and WHS with defraggers that have a VSS friendly defrag mode. In fact, I use only the VSS defrag mode of DK on Vista, and so far it’s been fine.