HP LTO 4 SCSI, LTO 4 FC manual Example, SCSI protocol, regardless of transport or interface type

Product ID, first 8 bytes

“Ultrium ” This will be the same for all HP Ultrium products, regardless of generation or model.

Product ID, last 8 bytes

1st byte:	Generation identifier:
	“4”	LTO 4 (1600 GB at 2:1 compression)
2nd byte	“–” Hyphen separator (ASCII 2Dh)
3rd–6th bytes	“SCSI”	SCSI protocol, regardless of transport or interface type
Product Revision Level
1st byte	Product codename ID:
	“A”		LTO 4 SAS full-height drive
	“B”		LTO 4 SCSI full-height drive
	“H”		LTO 4 FC full-height drive
2nd byte	Release type:
	“0”, “1”		Development
	“2”		Formal release
	“3”, ...		Post-release
3rd byte	Minor release level: “0”–“9”, then “A” –”Z”
4th byte	Firmware variant:
	“D”		Standard distribution firmware
	“W”		Standard HP automation firmware

Example

If new drive families or variants support features that are not available in previous generation products, you can detect the existence of these features through the SCSI MODE SENSE and LOG SENSE commands. Exact details will become available as new products are defined. There is no need to limit driver or application connectivity to a single HP Ultrium product type.

To determine the drive technology family:

Examine only the first eight bytes of the Product ID field (the text “Ultrium ”).

To determine the Ultrium format generation:

Use one of the following two methods, of which the second is preferred:

•Examine the character in byte 9. A “4” indicates format LTO 4 (1600 GB capacity at 2:1 compression) and so on.

•Preferred method: Use the SCSI REPORT DENSITY SUPPORT command.

For an LTO 4 product with LTO Ultrium 4 media, the following will be returned:

Primary Density Code:	46h
Assigning Organization:	LTO-CVE	Linear Tape Open Compliance and Verification Entity
Density Name:	U-416	16 track

16 Configuration and initialization

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