User`s guide

DigiDrive Guide 20
To achieve up to 32 simultaneous tracks of 16- or
24-bit audio with high edit density, or 64 tracks
with low to moderate edit density you will need:
◆
Two or more Digidesign-approved hard drives
connected to your SCSI adapter card or built-in
SCSI ports. If you use a dual-channel SCSI host
adapter card, equally allocate audio files to
drives connected to each of the two busses on
the card for optimal performance.
For details on allocation of tracks to drives, see
the section on Recording to Multiple Hard
Drives in the
Pro Tools Reference Guide .
Additional Hard Drive Performance Tips:
Use at least two drives
You can improve perfor-
mance by allocating audio files between two or
more hard drives. It is best to use drives that
have similar performance characteristics.
Minimize SCSI cable length The maximum cable
length that can be used on a “wide” single-
ended SCSI bus is 3 meters if you are using fewer
than four devices, or 1.5 meters if you are using
four or more devices. Please note that cable
length includes the cabling inside the drive en-
closures themselves—which can be up to 12
inches in length. If you are running the DigiD-
rive in LVD mode, the maximum SCSI cable
length is 12 meters.
Avoid distributing audio files within a ses-
sion over different partitions on the same
drive, as this will slow drive performance.