Akai DPS16 Operator's Manual download pdf (Page 141)

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Chapter 11: Using a Disk (Disk Mode)

Defragmenting a disk

Repeated recording and edit operations on the DPS16 fragments audio data written on the disk. If this frag-

mentation is significant, the DISK BUSY error message appears and recording or playback may be interrupted

because accessing data on the disk takes more time. The DPS16 enables you to re-align the fragmented audio

data (“defragmentation”) to solve or avoid this problem.

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TIPS:

• When you record and edit on the DPS16 repeatedly, an alarm message may appear, indicating that there is

not enough space on the disk even though the hard disk has enough space available. This means that the

internal audio management table (an area where audio data is managed) on the DPS16 does not have

enough memory space. In this case, you can defragment the disk to reduce the used space in the audio

management table and regain available space on the disk.

• You can check the disk busy field to see how frequently a disk is accessed. If the field appears as shown

below often, fragmentation is severe. Defragment the disk as soon as possible.

➸

NOTE :

When you defragment a disk, all Undo data stored on the disk will be erased. Defragment disks

regularly after a recording session or editing project is completed.

The following are two defragmenting methods.

■ JOIN

This method copies a series of small bits of audio data (that exist consecutively in time) in a blank area to make

one continuous unit of data. This method cannot eliminate fragmentation of blank areas. Also, if the blank area is

not large enough, defragmentation does not work. This operation takes a relatively short time. If time is an issue or

you defragment a disk regularly, try this method of organizing data.

■ FULL

This method rewrites all audio data continuously so that blank areas are not scattered on the disk. This method

completely eliminates fragmentation of both audio data and blank areas. When you finish a recording session or

editing project, or the DISK BUSY error message appears after you perform JOIN defragmentation, try this

method.

➸

NOTE : Before defragmenting the disk

Backing up and reloading a Project has the same effect as defragmenting a disk. That is, when you back up

and reload a Project, “disk busy” problem will be resolved. To protect your important data, first try the

backup and reload operation. To perform the defragmentation operation, the DPS16 uses a free space on the

disk to copy the existing data. Therefore, if an unexpected error occurs on the disk, the data may become

unreadable in the worst case.

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Akai DPS16 Operator's Manual Page 141