User`s guide

Chapter 4: Installing AVoption 15
Flashing SCSI ROM with ATTO
ExpressPro-Tools
ExpressPro-Tools is supplied with Pro Tools 5.1
and every ATTO SCSI card, and allows you to
flash the ROM on the SCSI card. Digidesign
strongly recommends that the firmware be set
on SCSI channels where audio storage is con-
nected as follows:
1 Launch ExpressPro-Tools after booting your
system and mounting all drives.
2 Double-click Media Drive.
3 From the Sync Rate pop-up menu, select
“20 (10)” (20 MB/sec at 10 MHz).
4 Click “Apply to All” (sets the card for all drive
IDs on that bus).
5 Repeat if necessary for the other bus.
6 Quit ExpressPro-Tools.
7 Restart you computer.
These settings are optimized for the size and fre-
quency of SCSI transactions demanded by
Pro Tools.
Initializing Hard Drives
The following is hard drive initialization infor-
mation for three different scenarios: Pro Tools
with no interchange, Avid to Pro Tools, and
Pro Tools to Avid.
Pro Tools with No Interchange
In installations where Pro Tools will not be rou-
tinely sharing projects with Avid Media Com-
poser systems, ExpressPro-Tools from ATTO
(provided with Pro Tools 5.1) should be used to
initialize all audio and video drives. Both HFS
and HFS+ file systems are supported for audio
drives. Only HFS is supported for video drives
(HFS+ has not been fully tested with video
drives).
Avid to Pro Tools
For projects originating on an Avid Picture Au-
thoring system, such as Media Composer, a sin-
gle HFS drive initialized with either ADU 2.1 or
later is supported. This drive may contain video
or audio media files. Pro Tools with AVoption
supports playback of audio and video tracks
from a single drive, as long as track count does
not exceed one stream of AVR77 and a maxi-
mum of eight audio tracks. When this drive is
used in a Pro Tools session, additional audio
tracks (beyond those imported from the Avid
workstation) should not be added, for band-
width reasons.
Drives initialized by Avid Drive Utility 2.1 or
later as 2-way or 4-way are supported in this sce-
nario. It is recommended that drives be added to
the SCSI channel dedicated for video to balance
demands on the SCSI system. Note that
Pro Tools can recognize a maximum seven
drives per SCSI channel.
Pro Tools and AVoption do not support
striped audio drives.