Tandberg Data PRODMAN VXA320, Руководство по эксплуатации продукта

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50
P
RODUCT
M
ANUAL
433689-01
C
HAPTER
7 S
PECIFICATIONS
P
ERFORMANCE
S
PECIFICATIONS
This section describes the performance specifications for the tape drive. The
tape drives are factory tested to these specifications using VXAtape XTape
media.
D
ATA
T
RANSFER
R
ATES
Table 7-2 lists the data transfer rates that the High-density, LVD tape drive can
achieve.
R
EAD AND
W
RITE
S
PECIFICATIONS
Table 7-3 provides read and write specifications for the VXA-320 tape drive.
Table 7-2 Data transfer rates in megabytes per second
Read
a, b
Write
a, b
Burst transfer rate
VXA-3 Format VXA-2 Format VXA-3 Format VXA-2 Format VXA-3 Format VXA-2 Format
12.0 MB/sec
c
6.0 MB/sec 12.0 MB/sec 4.5 MB/sec 160 MB/sec 160 MB/sec
a
Host matching.
b
When attached to a High-density LVD SCSI bus. All sustained data rates are dependent on the capabilities of the SCSI bus (for example, an
Ultra2 SCSI bus is limited to less than 40 MB/second).
c
One megabyte equals 1,000,000 bytes.
Table 7-3 Read and write specifications
Backward compatibility with
VXA-1 and VXA-2 tape drives
a
ƒ
Reads and writes VXA XTape written by a VXA-2 tape drive.
ƒ
Recognizes, then ejects VXA-1 formatted tapes.
ƒ
Recognizes, then ejects VXAtape V6, V10, and V17
b
.
Compression ALDC (Adaptive Lossless Data Compression)
Bit error rate Less than 1x10
–17
Partitions 2
Buffer 8 megabytes (MB)
Error detection and correction 4 layer Reed Solomon
Format Discrete Packet Format
Heads (8) ƒ
4 write heads
ƒ
4 read/write check/read heads
Data media ƒ
VXAtape cartridges with Advanced Metal Evaporated (AME) media.
The tape drive ejects other types of media.
ƒ
No formatting or conditioning required prior to use.
ƒ
30-year archival life.
a
The VXA-320 (VXA-3) tape drive can read or write VXA-2 formatted V23, X23, X10, or X6 tapes.
b
The VXA-320 (VXA-3) tape drive does not support VXAtape V6, V10, or V17.