RXT™ SabreDrive:
SCSI Differences Between RXT and IBM LTO 2
Note: This document is an addendum to the IBM LTO-2 SCSI Reference Manual,
noting the differences between RXT SCSI commands and IBM LTO-2 SCSI
commands.
P.N. 90960001-A
SCSI Commands
Note: The RXT SabreDrive does not currently support any Fibre Channel commands.
INQUIRY: Standard Inquiry Data
• Product Revision Level field is constant with “4850”.
• The Reserved field bytes 42 through 55 contain the firmware build version in the format
MM.mmm.PPP.BBB where MM is the Major Revision, mmm is the Minor Revision, PPP is the
Patch, and BBB is the Build.
INQUIRY: (0x00) Supported Vital Product Data Page
• Only Pages 0x00, 0x80, 0x83, and 0xC0 are supported.
INQUIRY: (0xc0) Drive Component Revision Levels Pages
• Constant with all blank characters.
MODE SENSE & MODE SELECT
• Only Pages 0x01, 0x02, 0x04, 0x10, 0x1C are supported.
READ ATTRIBUTE
• Not supported in the current release.
READ BUFFER
• Not supported in the current release.
READ POSITION
• BCU is always 1, i.e. the Number of Blocks in Buffer field does not represent the actual number
of blocks in the buffer.
SEND DIAGNOSTIC
• Not supported in the current release.
RECEIVE DIAGNOSTIC
• Not supported in the current release.
SET CAPACITY
• No minimum size restriction on available medium.
• This follows SCSI-3 Specification in that the available medium is set to a proportion of the total
capacity instead of being set to a proportion of the current available medium.
WRITE ATTRIBUTE
• Not supported in the current release.
WRITE BUFFER
• Not supported in the current release.
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