User's Guide
Table Of Contents
- SCSI Command Support
- SCSI Commands
- Initialize Element Status - 07h
- Initialize Element Status With Range - E7h
- Inquiry - 12h
- Log Sense - 4Dh
- Mode Select (6) - 15h
- Mode Select (10) - 55h
- Mode Sense (6) - 1Ah
- Mode Sense (10) - 5Ah
- Mode Pages
- Move Medium – A5h
- Persistent Reserve In – 5Eh
- Persistent Reserve Out – 5Fh
- Position to Element – 2Bh
- Prevent Allow Medium Removal – 1Eh
- Read Buffer – 3Ch
- Read Element Status – B8h
- Release Element (6) – 17h
- Release Element (10) – 57h
- Report LUNS – A0h
- Request Sense – 03h
- Request Volume Element Address - B5h
- Reserve Element (6) - 16h
- Reserve Element (10) - 56h
- Send Diagnostic - 1Dh
- Send Volume Tag - B6h
- Test Unit Ready (00h)
- Write Buffer (3Bh)
Quantum Scalar Intelligent Libraries SCSI Reference Guide Guide 17
Note: For i2000 and i6000 libraries - Once a library control firmware update gets scheduled, the library will
not show the firmware revision of the installed library firmware bundle in the standard inquiry response if the
library is operating in an emulation mode, but rather emulates a firmware version for the emulated device.
Peripheral Qualifier – A return value of 000b indicates that the library supports the peripheral device type
at the specified LUN. A return value of 001b indicates that the library is capable of supporting the peripheral
device type at the specified LUN, however the device is not currently connected to it. A return value of 011b
indicates no peripheral device types are supported at that LUN.
Peripheral Device Type – For media changer device logical units, this field returns 01000b (08h) to indicate
it is a media changer device. For the DA blade controller device logical unit, this field returns 01100b (0Ch)
to indicate it is a controller device. If an unsupported LUN was specified, this field returns 11111b (1Fh),
which indicates that the device type is unknown.
Removable Medium Bit (RMB) – For media changer device logical units, this field returns 1, indicating
media is removable. For the DA blade controller device logical unit it returns 0.
Version – This field returns 03h, indicating compliance with the SCSI-3 standard. Note that this field will
report SCSI-3 standard compliance despite support of various SMC-x defined command and response
information for certain SCSI commands.
Asynchronous Event Reporting Capability (AERC) – Returned as 0, indicating AERC is not supported.
Normal ACA Supported (NormACA) – If the media changer device is configured through a control path
drive, the NACA bit is not supported and this field returns 0.
Hierarchical Support (HiSup) – This field returns a 1, indicating that the hierarchical addressing model is
used to assign LUNs, and that the REPORT LUNs command is supported.
Response Data Format – Returned as 0010b, indicating response data is in standard SCSI format.
Additional Length –
• When requesting a standard inquiry response from the DA blade controller device logical unit, this
field is set to 1Fh, indicating 31 additional bytes of data following this field.
• When requesting a standard inquiry response from a media changer device logical unit hosted by
a DA blade, this field returns 33h, indicating 51 additional bytes of data following this field.
• When requesting a standard inquiry response from a media changer device logical unit hosted by
a tape drive, this field is set by the media changer device to 33h, indicating that 51 additional bytes
of data will be following this field. However, the tape drive hosting the media changer device control
path may modify data within the response and update the length value, depending on the tape drive
interface type and supported version descriptors.
SCC Supported (SCCS) – For the media changer device logical units, this field returns a 0. For the DA
blade controller device logical unit, this field returns a 1.
Target Port Groups Supported (TPGS) – If the media changer device control path is hosted by a DA
blade, this field is set to 0. If the media changer device control path is hosted by a tape drive, this field is
filled in by the tape drive hosting the interface and may be set to 1 if the REPORT TARGET PORT GROUPS
command is supported.
Third Party Copy (3PC) – This field is set to 0 to indicate that third party copy is not supported.
PROTECT – This field is set to 0 to indicate that protection information is not supported.
Basic Queuing (BQue) – Returned as 0, indicating basic queuing is not supported.
Enclosure Services (EncServ) – Returned as 0, indicating an enclosure services component is not
included.
Bar Code (BarC) – For media changer device logical units, this field returns a 1, indicating a bar code
scanner or imaging device is installed (also returned in byte 55 below). For the controller device logical unit,
this field returns a 0.