Roland Vs-880 SCSI ID numbers, Partitions, Using an external disk drive About SCSI, Appendices

Using an external disk drive (About SCSI)

■SCSI ID numbers

Each disk drive is distinguished by its SCSI ID number (0Ð7). This means that when two or more disk drives are connected, you must make settings so that the SCSI ID numbers of the disk drives do not conflict (coincide). If the SCSI ID numbers conflict, the VS-880 will not be able to correctly recognize the disk drives.

With the factory settings, the VS-880 is set to SCSI ID number 7. Set the disk drives you are con- nected to ID numbers other than 7.

■Partitions

The VS-880 is able to manage either 500 M bytes or 1000 M bytes of disk space at one time. If you use a disk drive that is larger than this, the disk must be partitioned into 500 M bytes / 1000 M bytes partitions. (A partition is a way of dividing a disk into separate areas.) Unless you have a special reason to divide a disk into smaller areas, you should use 1000 M bytes partitions. The VS- 880 can divide a disk drive into up to 4 partitions.

¥If a 420 M bytes disk drive is partitioned with a 500 M bytes partition, a single 420 M bytes parti- tion will be created.

¥If a 1.2 G bytes disk drive is partitioned with 1000 M bytes partitions, a 1000 M bytes partition and a 200 M bytes partition will be created.

¥If a 4.2 G bytes disk drive is partitioned with 1000 M bytes partitions, four 1000 M bytes parti- tions will be created. The remaining 200 M bytes cannot be used.

Disk drive (420 M bytes)

Partition 1

(420 M bytes)

Disk drive (1.2 G bytes)

Partition 1	Partition 2
(1000 M bytes)	(200 M bytes)

		Disk drive (4.2 G bytes)
Partition 1	Partition 2		Partition 3	Partition 4	200 M bytes
(1000 M bytes)	(1000 M bytes)		(1000 M bytes)	(1000 M bytes)

In this way, each partition of a disk drive is handled by the VS-880 as a separate disk drive. When using the VS-880, you must specify which partition of which disk drive is to be used. The currently used partition is referred to as the Òcurrent drive.Ó

Appendices

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