Standard Models
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*Features* *Description*
*Capacity* 2.6 GByte (over 18GByte with loader)
*Compatibility* TK50 and TK70 media read compatible
*Transfer rate*
1.1 MBytes/second raw data rate to media
Up to 800 KBytes/second sustained data
rates
4 to 5 MBytes/second synchronous SCSI Bus
transfer rates
*Data Integrity*
Custom 64 bit CRC on each 2k of data on
media
Powerful custom Reed Solomon ECC (designed
for tape)
End to end EDC on data (onto media and
back), overlapped with parity from the SCSI
bus
Parity checking on data cache memory
Undetected errors < 1 in 10 E+30 bits
Unrecovered Read errors < 1 in 10 E+17 bit
*Cache* 512 KBytes read/write data cache
*SCSI Interface*
Compliant with SCSI-2 and with DEC SCSI
requirements
8 bit wide SCSI data path, single ended
implementation
NCR 53C96 SCSI controller chip used for the
SCSI interface.
Synchronous and asynchronous data transfers
supported
Differential and Single Ended SCSI Bus
options
*Diagnostic/Troubleshooting
Features*
Serial RS 422 ports on the drive and
controller for offline trouble shooting and
POST error reporting
Extensive built in diagnostics
LEDs for indication of POST
failure/success, and command traffic
Errors recorded in EEPROM for later
analysis at repair sites
Extensive Error and Statistical information
in the Sense Data
*Firmware Update* Field update via Flash EEPROM
*Head* 24 track pairs
Product Description
===================
The TX85 series of cartridge tape subsystems are used primarily as backup
storage devices and as devices for loading software onto Digital computer
systems. The TX85 comes embedded in a system enclosure or in a tabletop
enclosure with its own power supply. The TX85 drive is a high performance,
high capacity, streaming cartridge tape product with outstanding data
integrity and data recovery characteristics that can store up to 2.6
gigabytes of data on a CompacTape III cartridge. The TZ85 is largely based
on the TF85 product.
Features
========
2.6/6.0 GByte cartridge capacity for TZ85/86 (18/42 GB with
Loader)
1.1 MBytes/second raw data rate to media
Up to 800 KBytes/second sustained data rates
4 to 5 MBytes/second synchronous SCSI Bus transfer rates
Optional 7 cartridge Media Loader (TZ857)
Extensive data integrity/recovery features
Compliant with SCSI-2 and with DEC SCSI requirements
8 bit wide SCSI data path, single ended implementation
Read and Write data caching
Extensive embedded diagnostic/self test software
TZ85 media read/write compatibility with the TZ86 drive
TF85 media read/write compatibility (TZ85)
TK50/TK70/TK50Z/TZ30 media read-only compatibility (TZ85)
"Run Cleaning Cartridge" LEDs on the Loader and Drive front
panels
Optional LCD display for real-time operational status
Optional remote panel for SCSI ID selection
Half-Rack and near-5.25" Form Factors
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