SCSI Commands: 31BREAD BUFFER Page 1443.19.6 MAM Page DefinitionsThe following section details the pages available in the MAM. Refer to the relevantUltrium specification documents for the current MAM data. An Ultrium specificationexists for each media generation.3.19.6.3 MAM PagesThe table below shows the Page ID used to identify each page within the MAM.Note that a Page ID of 0xFFFFFF is used when reading the entire MAM. The MAMsize is 8 KB for LTO4 cartridges and 4 KB for LTO1, LTO2 and LTO3 cartridges.An optional page will not exist unless the drive has preformed an operation thatrequires information be stored to that optional page. A READ BUFFER command toan optional page that has not been created will result in a check condition LUN NOTREADY AUXILIARY MEMORY NOT ACCESSIBLE.Page ID Access DescriptionFFFFFFh RO All pages.001h RO Cartridge Manufacturer’s Information002h RO Media Manufacturer’s Information (optional)0F0-0FFh RO Drive Manufacturer Support (Quantum cleaning Cartridge only)0FFh RO Universal Drive Support (Universal Cleaning Cartridge only)101h RO Initialization Data102h RO Tape Write Pass103h RO Tape Directory104h RO EOD Information105h RO Cartridge Status and Tape Alert Flags106h RO Mechanism Related (optional)107h RO Suspended Append Writes108-10Bh RO Usage Information (optional)10Ch RO Fatal Error Usage / WORM Fatal Error Usage (LTO3 and later)10Dh RO Cartridge Content (LTO4)1FC-1FFh RO Cleaning Usage Information (optional, cleaning tape only)200h RW Application Specific (optional)3.19.8 READ BUFFER Completion StatusCode Message Description00h GoodStatus• The drive is ready to perform any appropriate command.• The drive remains in any previously set mode.• The tape position is not changed.02h CheckConditionUse the REQUEST SENSE command to retrieve status information. PossibleSense Keys are:Code Message Description04h Hardware Error Drive hardware failure detected.05h Illegal Request The Command Descriptor Block is invalid.06h Unit Attention The cartridge was changed or the drive wasreset prior to this command.
