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Atape
written in
this format...
Can be read and written by an ...
EXB-8205 EXB-8205 XL EXB-8505 EXB-8505 XL
8200
4444
8200c
4444
8500
44
8500c
44
8200
format
8200c
format*
8500 format
(EXB-8505 and
EXB-8505XL)
8500c format*
(EXB-8505 and
EXB-8505XL)
Maximum sustained
data transfer rate
262
KBytes/sec
500
KBytes/sec
1.0
MByte/sec
Maximum capacity on
112m tape
2.5
GBytes
5.0
GBytes
10.0
GBytes
Maximum capacity
on 160m XL tape (XL
configurations only)
3.5
GBytes
7.0
GBytes
14.0
GBytes
Track
structure
Helical scan: One write head writes
a single data track
witha–10°azimuth.
Helical scan: Two write heads write
two overlapping data tracks.
Track 1 = +20° azimuth.
Track 2 = –10° azimuth.
Supports partitions
no yes
Supports setmarks
no yes
Long filemarks
270 tracks (2,160 KBytes) 6 tracks (48 KBytes)
Short filemarks
23 tracks
(184 KBytes)
one 1-KByte physical block
Setmarks
no
yes–6 tracks
(48 KBytes)
EOD mark
no yes–849 tracks yes–602 tracks
Search fields no yes
Logical
block packing
no yes
*Assumes a data compression ratio of 2:1.
Table 1-2 Read/write compatibility of Exabyte 8mm tape drives
Table 1-3 Data format features
May 1994 EXB-8205 and EXB-8505 1-5
(Standard and XL)
1 Features