Format of the tape configuration file
The tape configuration file format consists of fields such as vendor ID, product ID, and details of compression types for a tape drive. This file also consists of optional fields for enabling the autoload feature of a tape drive and changing the command timeout values of a tape drive.
The following table displays the format of the tape configuration file:
Item | Size | Description |
---|---|---|
|
up to 8 bytes |
The vendor ID as reported by the |
|
up to 16 bytes |
The product ID as reported by the |
|
The number of bytes of the product ID to be used for matching to detect the tape drive to be identified, beginning with the first character of the product ID in the Inquiry data. |
|
|
up to 16 bytes |
If this parameter is present, it is specified by the string displayed by the command, |
|
up to 16 bytes |
If this parameter is present, it is specified by the string displayed by the command, |
The |
The following table explains the description, density code, and compression algorithm for the various compression types, such as l
, m
, h
, and a
:
Item | Size | Description |
---|---|---|
|
up to 24 bytes |
The string to print for the nodeshell command, |
|
The density code to be set in the SCSI mode page block descriptor corresponding to the desired density code for l, m, h, or a. |
|
|
The compression algorithm to be set in the SCSI Compression Mode Page corresponding to the density code and the desired density characteristic. |
The following table describes the optional fields available in the tape configuration file:
Field | Description | ||
---|---|---|---|
|
This field is set to |
||
|
Individual timeout value. You must use this field only if you want to specify a different timeout value from the one being used as a default by the tape driver. The sample file lists the default SCSI command timeout values used by the tape drive. The timeout value can be expressed in minutes (m), seconds (s), or milliseconds (ms).
|
You can download and view the tape configuration file from the NetApp Support Site.
The tape configuration file format for the HP LTO5 ULTRIUM tape drive is as follows:
vendor_id
="HP"
product_id
="Ultrium 5-SCSI"
id_match_size
=9
vendor_pretty
="Hewlett-Packard"
product_pretty
="LTO-5"
l_description
="LTO-3(ro)/4 4/800GB"
l_density
=0x00
l_algorithm
=0x00
m_description
="LTO-3(ro)/4 8/1600GB cmp"
m_density
=0x00
m_algorithm
=0x01
h_description
="LTO-5 1600GB"
h_density
=0x58
h_algorithm
=0x00
a_description
="LTO-5 3200GB cmp"
a_density
=0x58
a_algorithm
=0x01
autoload
="yes"