User manual QUANTUM SCALAR INTELLIGENT LIBRARIES SCSI REFERENCE GUIDE 03-2010

[. . . ] SCSI Reference Guide SCSI Reference Guide SCSI Reference Guide Quantum Scalar Intelligent Libraries Scalar Series 6-00423-09 Scalar® Intelligent Libraries SCSI Reference Guide, 6-00423-09, Ver. Quantum Corporation provides this publication "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability or fitness for a particular purpose. Quantum Corporation may revise this publication from time to time without notice. Making copies or adaptations without prior written authorization of Quantum Corporation is prohibited by law and constitutes a punishable violation of the law. [. . . ] If the hard address has not changed from the address obtained in a previous successful loop initialization, the target will attempt to obtain the address in the LIFA phase if a valid Fabric Login exists or LIPA phase of loop initialization. If the hard address has changed, the target will attempt to obtain the new address in the LIHA phase. When the RHA bit is set to zero, the target follows the normal initialization procedure, including the possibility of obtaining a soft address during the loop initialization process. When not attached to an arbitrated loop, this field is ignored the RHA bit. Allow Login without Loop Initialization (ALWI) ­This field returns zero to indicate the target will perform the normal loop initialization procedure before entering the monitoring mode and accepting a login ELS. Disable Target Initiated Port Enable (DTIPE) ­This field returns zero to indicate the target will enable itself onto the loop according to the rules specified in FC-AL-2. Disable Target Originated Loop (DTOLI) ­This field returns zero to indicate the target attached by an arbitrated loop will generate LIP(F7, xx) after it enables a port into a loop. If the target is attached to an arbitrated loop and detects loop failure at its input, it shall follow the error initialization process defined by FC-AL-2 regardless of the state of this bit. RR_TOV Units ­ This field indicates the units for the Resource Recovery Time-out Value field. A value of 3 is returned to indicate the units are in tenths of seconds. Resource Recovery Time-out Value (RR_TOV) ­ A value of 20 is returned, indicating a time-out value of 2 seconds. Informational Exceptions Control Page (1Ch) The Informational Exceptions Control mode page describes the capabilities of the library for reporting exception conditions. It was previously known as the Tape Alert mode page when exception conditions were limited to only Tape Alert flags. The main purpose of this page is to indicate that the library can report exception conditions by being polled. The exception conditions primarily involve the Tape Alert flags, but may include additional conditions as well, as defined by the Sense Data. Table 40 Bit Byte 0 1 2 3 4 Interval Timer 7 8 Report Count 11 Parameters Savable (PS) ­ This page is not savable, and this field is set to zero. Page Code ­ This field identifies the Informational Exceptions Control mode page and returns 1Ch. Perf Rsvd EBF Informational Exceptions Control Page (1Ch) 7 PS 6 Rsvd 5 4 3 2 1 0 Page Code (1Ch) Parameter List Length = 0Ah EWasc Dexcpt Test MRIE Rsvd LogErr Reserved Scalar Intelligent Libraries SCSI Reference Guide 41 Log Errors (LogErr) ­ This field is set to 0 to indicate that logging of informational exception conditions is vendor specific (unique to the library in this case). Test ­ This field is set to 0 to indicate that test failure indications will not be generated. Disable Exception Control (Dexcpt) ­This field is set to 1, indicating that the initiator must poll the LOG SENSE Tape Alert page. Enable Warning (EWasc) ­ This field is set to 0, indicating that reporting of warnings is disabled. Enable Background Function (EBF) ­ This field is set to 0 indicating that background functions are not enabled. Performance (Perf) ­ This field is set to 0 to indicate that informational exception operations that are the cause of delays are acceptable. [. . . ] The results only reflect those of the most recent SEND VOLUME TAG command. Send Volume Tag CDB Format The SEND VOLUME TAG CDB format is shown in the following table. Table 77 SEND VOLUME TAG CDB format Bit Byte 0 1 2 Starting Element Address 3 4 5 6 Reserved 7 8 Parameter List Length 9 10 11 Reserved Control Reserved Reserved Send Action Code Logical Unit Number 7 6 5 4 3 2 1 0 Op Code (B6h) Rsvd Element Type Code Scalar Intelligent Libraries SCSI Reference Guide 81 Element Type Code - This field specifies the element types selected for the search, as shown in the following table. Table 78 Code 0000b (0) 0001b (1) 0010b (2) 0011b (3) 0100b (4) Element Type Code Selected Element Type All element types reported Medium transport element (accessor) Storage element Import/Export element Data transfer element (drives) Starting Element Address - This field specifies the minimum element address to begin the search. Only elements with an element type code specified by the Element Type Code field, and with an address greater than or equal to the starting element address will be searched. [. . . ]