Chapter 1 Introduction; Overview; Features - Sony RMO-S561 Mode D'emploi

Chapter 1 Introduction

Overview

Features

The RMO-S561 Magneto-Optical Disk Unit has
the following features:
• Magneto-optical technology enables repeated
writing and erasing of data on the disk.
• The disk unit automatically senses the type of
disk being inserted, enabling the free use of
both 650 Mbytes (594 Mbytes), 1.3 Gbytes (1.2
Gbytes), 2.6 Gbytes (2.3 Gbytes), 5.2 Gbytes
(4.8 Gbytes, 4.1 Gbytes), and 9.1 Gbytes (8.6
Gbytes) disks indifferently.
• A maximum of 9.1 Gbytes (4,096 bytes/sector),
8.6 Gbytes (2,048 bytes/sector), 9.1 Gbytes
(1,024 bytes/sector), or 9.1 Gbytes (512 bytes/
sector) of data can be written on the two sides
of a 5.25-inch magneto-optical disk. This is
equivalent to about 6100–6500 times the
capacity of a conventional 3.5-inch floppy disk
(2HD).
• Any disk conforming to the internationally
accepted CCS (continuous/composite servo) or
CCW (continuous composite write-once) format
can be used in this disk unit.
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Chapter 1 Introduction
• This disk unit employs SCSI-2 (Small
Computer System Interface-2).
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• The 3,000 min (rpm) high-speed
spindle motor enables data transfer rates of
3.07 – 6.14 Mbytes/s (4,096 bytes/sector),
2.87 – 5.84 Mbytes/s (2,048 bytes/sector),
3.07 – 6.14 Mbytes/s (1,024 bytes/sector), or
3.07 – 6.14 Mbytes/s (512 bytes/sector).
• With disk capacities under 5.2 Gbytes (4.8
Gbytes, 4.1 Gbytes), the spindle motor rotates at
3300 min -1 (rpm).
• With disk capacities under 2.6 Gbytes (2.3
Gbytes), the spindle motor rotates at 3600 min
(rpm).
• The low-profile, light-weight optical pick-up
yields average seek times of 25ms.
• Use of a highly reliable error correction code
(ECC) system keeps the error rate as low as
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10 .
• Optimum operation environment is provided
through use of a large, 8MB buffer and
optimized cache control algorithm. (Write cache
can be enabled or disabled. For details, see
"Setting the Disk Unit's Functions" on page
12.)
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