About Dds Drives; Features - Sony SDT-D11000 Benutzerhandbuch

Part 1. Introduction

About DDS Drives

Features

6
Part 1. Introduction
The SDT-D11000 is an external DDS drive unit that uses data cartridges
conforming to the DDS-4 format. The SDT-D9000 is an external DDS drive
unit that uses data cartridges conforming to the DDS-3 format. The SDT-
D11000 supports DDS-1, DDS-2, DDS-3 and DDS-4 formats. The SDT-
D9000 supports DDS-1, DDS-2 and DDS-3 formats.
The DDS Drive Unit SDT-D11000 has the following features:
• The Digital Data Storage format provides a huge data storage capacity on
DDS-1/DDS-2/DDS-3/DDS-4 data cartridges.
• Read After Write Function and third-level error correction code guarantee
high data reliability.
• Data compression provides 40 gigabytes of storage on 150 m tape-length
*1
cartridge.
The native capacity is 20 gigabytes of storage on 150 m tape-length
cartridge.
• Stored data are automatically checked for compression.
• Embedded wide ultra SCSI interface.
(LVD/SE automatically switchable)
• Supports SCSI-2 sequential-access devices command set.
• Read/Write operation is available with DDS-1, DDS-2, DDS-3 and DDS-4
formats.
The DDS Drive Unit SDT-D9000 has the following features:
• The Digital Data Storage format provides a huge data storage capacity on
DDS-1/DDS-2/DDS-3 data cartridges.
• Read After Write Function and third-level error correction code guarantee
high data reliability.
• Data compression provides 24 gigabytes of storage on 125 m tape-length
*1
cartridge.
The native capacity is 12 gigabytes of storage on 125 m tape-length
cartridge.
• Stored data are automatically checked for compression.
• The SCSI-2 (ANSI SCSI-2 X3T9.2/86-109 REV. 10C) interface is fully
supported for host computer access.
• Read/Write operation is available with DDS-1, DDS-2 and DDS-3 formats.
*1 This is assuming 2 : 1 compression ratio.
The degree of data compression attained while recording data varies according to system
environment and data type.