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Mbox User Guide70
Seek Times on Partitioned Drives
Seek times are actually faster on partitioned
drives (assuming that reads and writes are per-
formed on a single partition), since the heads
only have to seek within the partition boundar-
ies, rather than the whole capacity of the drive.
Smaller partitions perform faster than larger par-
titions, but this comes at the expense of contig-
uous storage space. When you partition a drive,
you will need to find the compromise that best
suits your performance and storage require-
ments.
Defragmenting an Audio Drive
Mac Systems
When working with larger files (such as video),
you can limit fragmentation by backing up your
important files to another disk, erasing the files
from the original hard disk, then copying the
files back, instead of doing a defragmentation.
Window Systems
Periodically defragment audio drives to maintain
system performance.
For maximum recording and playback effi-
ciency, data should be written to your hard
drive in a contiguous fashion—minimizing the
seek requirements to play back the data. Unfor-
tunately, your computer can’t always store the
sound files in this way and must write to disk
wherever it can find space.
In multitrack recording, audio tracks are written
in discrete files, spaced evenly across the disk.
While fragmentation of individual files may be
zero, the tracks may be far enough apart that
playback will still be very seek-intensive. Also,
the remaining free space on the disk will be dis-
contiguous, increasing the likelihood of file
fragmentation on subsequent record passes.
Increased fragmentation increases the chance of
disk errors, which can interfere with playback of
audio, and result in performance errors.
Optimizing (Defragmenting) Drives
To prevent fragmentation, you can optimize
your drive, which rearranges your files into a
contiguous format. Most optimizing software
lets you run a check on a drive to find out the
percentage of fragmentation. If your drive
shows moderate to heavy fragmentation, you
should consider optimizing it.
If you use your system for intensive editing, or if
you frequently delete audio or fade files from
your hard drive, you may need to optimize your
drives on a weekly basis, or even every few days,
since it doesn’t take long for even a large hard
drive to become fragmented.
Backing Up Data Before Optimizing
Since your files will be rewritten by the optimi-
zation process, always make a backup copy of
the data on your hard drive before you optimize
it. You should also use a hard drive utility to find
and repair any problems before optimizing data
or re-initializing your drives. If there is any dam-
age to your hard drive's directories prior to opti-
mizing, serious data loss may result.
Avoid distributing audio files within a ses-
sion over different partitions on the same
drive since this will adversely affect drive
performance.
On Windows, to avoid fragmentation,
format drives with higher cluster sizes
(such as 32K).