HP C737990900 - Manual (Page 106)

106 Commands
Medium Common Attributes
These attributes are hard coded into the MAM at manufacture time. The
attributes defined are shown in Table 16. All the attributes are read-only
(Read-Only = 1).
The Medium Manufacturer field should contain a value listed in the Vendor
Identification list (see Annex D).
The
Medium Serial Number identifies the manufacturer’s serial number for the
medium. The Medium Manufacturer Date specifies the date of manufacture of
the medium. The format is YYYYMMDD.
Partition Usage History The Partition Usage History attribute provides the same counters as the Medium
Usage History but they apply only to the current partition. Since Ultrium drives
only support a single partition, the values will be the same as in Medium Usage
History.
Product Serial Number A vendor-assigned serial number. If the product serial number is not available,
the device server will return ASCII spaces (20h).
Total MB Written in Medium
Life and
Total MB Read in Medium Life
The total number of data bytes that are transferred to or from the tape surface
(after any data compression has been applied) over the entire tape life. These
figures are cumulative and will never be reset.
Total MB Written in Current/
Last Load and Total MB Read
in Current/Last Load
These are similar to the attributes above but apply to the current load (if the tape is
currently loaded) or the last load (if the tape is currently unloaded). The device
server should reset these attributes to zero when the tape is loaded.
Medium Usage History This provides statistical counters for the entire tape. If a field is not used it should
be set to zero. The format is as follows:
ID Attribute Name Size in Bytes Format
0400h Medium Manufacturer 8 ASCII
0401h Medium Serial Number 32 ASCII
0402h Medium Length 8 Binary
0403h Medium Width 4 Binary
0404h Assigning Organization 8 Binary
0405h Medium Density Code 1 Binary
0406h Medium Manufacturer Date 8 ASCII
0407h MAM Capacity 8 Binary
0408h Medium Type 1 Binary
0409h Medium Type Information 2 Binary
040Ah – 07FFh Reserved