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System Hardware Overview
System Guide 19
SCSI Disk Subsystem
In a standard configuration, one 9-GB 7,200-RPM Ultra-Wide SCSI disk
drive and four identical 9-GB 10,000-RPM Ultra-Wide SCSI disk drives are
installed in the external and internal drive bays of the Intergraph StudioZ. No
bays are available to install additional drives. The 9-GB 7,200-RPM system
disk drive is formatted with three partitions for storage of operating system
files, project files, and audio files. Four 9-GB 10,000-RPM disk drives are
formatted as a striped set for video file storage.
Disk striping is a hardware capability that speeds up data I/O from disk
storage. The computer divides the data into pieces and spreads the pieces
across the disks in the striped set. Because the computer transfers data to
multiple drives in chunks smaller than it would transfer to a single drive, data
transfer is accelerated.
Each of the Adaptec 2940 SCSI Controller cards handle data I/O for two video
storage drives. The Adaptec 7880 SCSI Controller, located inside the
Intergraph StudioZ, handles data I/O for the system disk drive. The Adaptec
controllers provide a maximum theoretical sustained data transfer rate of 40
MB per second. With disk striping, this rate is increased to about 50 MB per
second.
The following table summarizes disk drive information. Note that the CD-
ROM is assigned drive letter G.
System Specifications
For details on the Intergraph StudioZ hardware configuration, see
Intergraph’s online System Reference document provided on disk in the
WIN32APP\SYSREF directory.
Drive Label Size Function Format
C:\ System 2 GB partition Stores operating
system software
File Allocation
Table (FAT)
E:\ Audio Storage 4 GB partition of C:\ Stores audio files NT File System
(NTFS)
F:\ Projects 3 GB partition of C:\ Stores project-
related files
NTFS
D:\ Video Storage 4 each 9 GB
(striped)
Stores video files NTFS
Install_ch1.book : Install_ch1.fm Page 19 Tuesday, December 16, 1997 5:57 PM