[Mtx-general] AIT-3 Tape full with 42G

[Charles M. R. <cm...@ii...>]

Folks

Another question that maybe this list can help me with. The SDX2-50C
tapes claim to hold 50G uncompressed and 100G compressed but I am
unable to fit more than 42G and compression does not seem to make 
a difference. The configuration is Solaris 8 on an E250 with an
Overland LibraryPro changer with 2 SDX-700C AIT-3 drives. The version
of mtx is 1.2.18rel and 'ufsdump' is used to write the tape. This
is only marginally on topic but I am hoping that someone spots
something in the (mtx) tapeinfo command output that is incorrect
or that folks just tell me that the 50G/100G is marketing nonsense.

Below I have appended the results of a tapeinfo and a ufsdump:


# tapeinfo /dev/rmt/0c
argc=2Usage: tapeinfo -f <generic-device>
# tapeinfo -f /dev/rmt/0c
Product Type: Tape Drive
Vendor ID: 'SONY    '
Product ID: 'SDX-700C        '
Revision: '0101'
Attached Changer: No
SerialNumber: '0006885030'
MinBlock:2
MaxBlock:16777215
Ready: yes
BufferedMode: yes
Medium Type: Not Loaded
Density Code: 0x31
BlockSize: 512
DataCompEnabled: yes
DataCompCapable: yes
DataDeCompEnabled: yes
CompType: 0x3
DeCompType: 0x3
BOP: yes
Block Position: 0
# 
# tapeinfo /dev/rmt/0c
argc=2Usage: tapeinfo -f <generic-device>
# tapeinfo -f /dev/rmt/0c
Product Type: Tape Drive
Vendor ID: 'SONY    '
Product ID: 'SDX-700C        '
Revision: '0101'
Attached Changer: No
SerialNumber: '0006885030'
MinBlock:2
MaxBlock:16777215
Ready: yes
BufferedMode: yes
Medium Type: Not Loaded
Density Code: 0x31
BlockSize: 512
DataCompEnabled: yes
DataCompCapable: yes
DataDeCompEnabled: yes
CompType: 0x3
DeCompType: 0x3
BOP: yes
Block Position: 0
# 


  DUMP: Writing 32 Kilobyte records
  DUMP: Date of this level 0 dump: Thu Jul 24 13:09:54 2003
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/rdsk/c1t1d0s0 (tub.ma.intuit.com:/dumps) to /dev/rmt/0c.
  DUMP: Mapping (Pass I) [regular files]
  DUMP: Mapping (Pass II) [directories]
  DUMP: Estimated 96007110 blocks (46878.47MB).
  DUMP: Dumping (Pass III) [directories]
  DUMP: Dumping (Pass IV) [regular files]
  DUMP: 12.50% done, finished in 1:10
  DUMP: 25.27% done, finished in 0:59
  DUMP: 37.79% done, finished in 0:49
  DUMP: 50.24% done, finished in 0:39
  DUMP: 63.08% done, finished in 0:29
  DUMP: 75.54% done, finished in 0:19
  DUMP: 87.93% done, finished in 0:09
  DUMP: End-of-tape detected
  DUMP: Tape rewinding
  DUMP: 97.45% done, finished in 0:02
  DUMP: Change Volumes: Mount volume `#2' on `tub.ma.intuit.com:/dev/rmt/0c'
  DUMP: NEEDS ATTENTION: Is the new volume (#2) mounted on `tub.ma.intuit.com:/d
ev/rmt/0c' and ready to go?: ("yes" or "no")   DUMP: The ENTIRE dump is aborted.
---
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