- HOW MUCH SPACE ON MAC HARDRIVE FULL
- HOW MUCH SPACE ON MAC HARDRIVE PRO
- HOW MUCH SPACE ON MAC HARDRIVE WINDOWS
Diskeeper 2008 Pro has been easily defragmenting my 250GB drive that contains my PEF, TIFF and JPEG files even when free space is only about 7%. I could be wrong, and I'll gladly be corrected.Īs for the present, the 15% requirement is not that critical. 15% was the minimum space required to be the on the safe side, but it would not guarantee that defrag would actually happen even if you had 15% and the fragmented file size was larger than the available free space. Was to work around the limitations of dealing/defragmenting with the MFT. Therefore, to cut a long story short, the 15% Commercial heavyweights like Diskeeper can easily manipulate the MFT and move files out the zone as required and piece together the MFT fragments if necessary. ironically, the default XP one) are not capable of this.
HOW MUCH SPACE ON MAC HARDRIVE WINDOWS
However can be written into when disk space is getting low, and falls belowĪnyway, although the Windows/Diskeeper defrag API has supported movement/defragmentation of the MFT from within windows itself, since the XP days, most defragmenters (incl. about the number of fragments, position of each fragment etc for the that file. The MFT can also expand 'unnecessarily' if there is heavy fragmentation on the drive because each file record will have to contain more information i.e. Initially Windows allocates about 12.5% (ġ5%) of the partition for the MFT zone, and this can expand depending on the number of files on the volume. The 15% minimum free space requirement for defrag arises, if I am not wrong, from the size of the MFT zone on the drive. I shoot my images as I live, in the open.
A magnetic image has a finite life span, but even that can be shorten drastically by environmental variables. After few months a hhd that's used as a backup drive should be deleted, and the data overwritten with a "fresh" copy to ensure the magnetic images don't become degraded and corrupted due to time. You need at least two complete backup sets, as invariably backups do fail. The more you insist of transferring data around the disk and data pathways of the computer (and the less reliable low speed buses used by many external hhds) by needlessly defragging, the greater the danger of data loss. I have 500 GB drives I top off to 450 GBs or more with no issue. what is on my ext drvs i put too much ofĪ value on them to take a chance on loosing the data. To it, you could find the drv freezing up on you with no way to getĪny of the files. Back up hhds aren't for general data usage, if your constantly updating the data on the drive by adding to existing folders and files, that's another issue altogether, and fragmenting will occur in that case.Īnd if you go to the 100% mark or very close They transfer just like that, as one big block that normally has no fragmentation what so ever.
I transfer 230 to 600 GBs chunks of data a couple times a month. There's no point to defragging a large set of data files that are copied as back ups to a hhd as they won't be fragmented to begin with. Run youir drvs, internal or external, that way be my guest. To backhawk13- if the drv is used for backup then it still should beĭegragged, as it is used and reused it is going to slow down and theįiles get put all over the drv. In any event, i use diskkeeper2008 to automatically defrag all the drvs all the time. what is on my ext drvs i put too much of a value on them to take a chance on loosing the data. and if you go to the 100% mark or very close to it, you could find the drv freezing up on you with no way to get any of the files. if you want to run youir drvs, internal or external, that way be my guest. To backhawk13- if the drv is used for backup then it still should be degragged, as it is used and reused it is going to slow down and the files get put all over the drv. if you buy a 500gb drv then you will find that after intallation that it has about 465gb available. the figure i am mentioning is real usable space, not the advertised space or the space quoted on the box. the 30gb file is bigger than the 20gb of free space.
HOW MUCH SPACE ON MAC HARDRIVE FULL
if you have a real capacity of 100gb and it is 80 gb full and you try to degfrag and one of the files is 30gb then it is not going to work.
How much space you nned is dependant on the tjhe size of the file the defragger is trying to move.
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