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Chapter 3 Media Changer Commands
Reserve Element (6) Command (16h)
164 Quantum ATL SuperLoader Software Interface Guide
Figure 85 Reserve
Element (6) Descriptor
(DLT)
A reservation via the RESERVE ELEMENT command remains in
effect until one of the following conditions is met:
• The initiator that made the reservation sends another
RESERVE ELEMENT command.
• The device is released via a RELEASE ELEMENT command
from the same initiator.
• A BUS DEVICE RESET message is received from any initiator.
• A hard reset occurs.
The occurrence of the last two conditions is indicated by the media
changer returning a CHECK CONDITION status, sense key of
UNIT ATTENTION on the next command following the condition.
It is not an error to issue a RESERVE ELEMENT command to a
media changer that is currently reserved by the requesting
initiator.
If another initiator has previously reserved the logical unit, the
target returns a RESERVATION CONFLICT status.
If, after honoring the reservation, any other initiator attempts to
perform any command except INQUIRY, REQUEST SENSE, or
RELEASE ELEMENT, the command is rejected with a
Bit
Byte76543210
0
Operation Code (16h)
1
Logical Unit Number 3rdPty Third Party Device ID Rsv’d
2 - 4
Reserved
5
Unused Reserved Flag Link
- Software Interface 1
- 6207947-00cN 98 2
- Contents 3
- Intended Audience 0 15
- Purpose 0 16
- Organization 0 16
- Document Conventions 0 17
- Document Conventions 18
- Theory of Operation 19
- SuperLoader DLT 1 20
- SuperLoader LTO 1 20
- Medium Changer Elements 1 20
- Events 1 21
- Automatic Drive Cleaning 1 23
- Automatic Drive Cleaning 24
- Messages 27
- Chapter 2 Messages 29
- Message Format 29
- Supported SCSI Messages 2 31
- Command 32
- Complete (00h) 32
- Disconnect (04h) 2 32
- Supported SCSI Messages 34
- Table 5 Identify 34
- Table 7 Response to 36
- Initiator Detected Error 36
- No Operation (08h)2 38
- Restore Pointers 38
- Save Data Pointer 38
- Table 8 Transfer 41
- Figure 5 Wide Data 42
- Transfer Request 42
- Media Changer Commands 45
- Table 9 Supported 46
- Media Changer 46
- Commands 46
- Figure 6 Initialize 49
- Inquiry Command (12h) 3 50
- Figure 9 51
- Inquiry Command (12h) 52
- Figure 9 Standard 52
- Inquiry Data (LTO) 52
- Figure 10 Standard 53
- Inquiry Data (DLT) 53
- Table 10 Standard 54
- Inquiry Data (LTO and 54
- SuperLoader 57
- Table 13 Supported 60
- Identifiers 60
- Figure 15 Command 61
- Support Data Page 61
- Table 14 Command 61
- Load Unload Command (1Bh) 3 63
- Log Sense Command (4Dh) 3 64
- Log Sense Command (4Dh) 65
- Table 16 Log Sense 65
- Figure 18 Supported 67
- Pages Page 67
- Figure 21 TapeAlert 70
- Log Sense Header 70
- Table 21 Move 74
- Statistics 74
- Figure 24 Hard/Soft 75
- Move Error Statistics 75
- Table 22 Hard/Soft 76
- Figure 26 Device 78
- Wellness Log Sense 78
- (0000h-000Fh) 78
- Figure 27 Log 79
- Parameters for Device 79
- Figure 28 Device 80
- Status Log Sense 80
- Figure 30 Device 82
- Page (0001h) 82
- Table 26 Device 83
- Table 31 Mode 91
- Select Page 91
- Figure 39 Mode 92
- Sense (6) Command 92
- Descriptor Block 92
- Table 35 TapeAlert 98
- Page Format 98
- Figure 45 Element 101
- Address Assignment 101
- Table 36 Element 102
- Figure 46 Transport 103
- Geometry Parameters 103
- Figure 48 Device 105
- Capabilities Page 105
- Table 38 Device 106
- Move Medium Command (A5h) 3 107
- Move Medium Command (A5h) 108
- Table 39 Move 108
- Medium Command 108
- Figure 50 Persistent 109
- Reserve In Descriptor 109
- Table 40 Persistent 110
- Read Key data parameters 111
- Table 41 Read Keys 112
- Figure 52 Read 113
- Reservations 113
- Parameters 113
- Table 42 Read 114
- Table 44 Persistent 117
- Reservation Type 117
- Table 46 Persistent 128
- Figure 56 Persistent 130
- Reserve Out 130
- Parameter List 130
- Table 47 Persistent 131
- Service and Scope value 132
- Figure 57 Position to 134
- Element Descriptor 134
- Table 49 Position to 135
- Element Command 135
- Figure 58 Prevent/ 136
- Allow Medium 136
- Read Buffer Command (3Ch) 3 138
- Read Buffer Command (3Ch) 139
- Table 51 Read Buffer 139
- Command Descriptor 139
- Figure 61 Read Buffer 141
- Descriptor 141
- Figure 62 Echo Buffer 142
- Table 53 Echo Buffer 143
- Figure 63 Read 144
- Element Status 144
- Figure 64 Element 146
- Status Data Header 146
- Table 55 Element 147
- Status Data 147
- Figure 65 Element 148
- Status Page 148
- Figure 66 Data 149
- Figure 67 Medium 150
- Transport Element 150
- Table 56 Medium 151
- Figure 68 152
- Figure 69 153
- Figure 69 Import/ 154
- Export Element 154
- Figure 70 155
- Figure 70 Data 156
- Transfer Element 156
- Table 59 Data 157
- Figure 71 Release 158
- (10) Descriptor Block 158
- Table 60 Release 159
- (10) Command 159
- Figure 72 Release 160
- (10) ID Only 160
- Figure 73 Release 161
- Unit (6) Descriptor 161
- Block (LTO) 161
- Figure 74 Release 162
- Block (DLT) 162
- Figure 75 Report 163
- Device Identifier 163
- Table 62 Report 165
- Parameter Data 165
- Report LUNS Command (A0h) 3 166
- Report LUNS Command (A0h) 168
- Request Sense Command (03h) 3 169
- Request Sense Command (03h) 170
- Figure 81 Request 170
- Table 64 Request 171
- Sense Data 171
- Table 65 Supported 173
- Sense Keys for 173
- Request Sense 173
- Table 66 Supported 174
- ASC / ASCQ (Hex) for 174
- Figure 82 Reserve 178
- Element (10) 178
- Table 67 Reserve 179
- Figure 83 Reserve 180
- Figure 84 Reserve 181
- Element (6) Descriptor 181
- Figure 85 Reserve 182
- Send Diagnostic Command (1Dh) 185
- Figure 87 Set Device 186
- Identifier Descriptor 186
- Test Unit Ready Command (00h) 188
- Figure 89 Test Unit 188
- Ready Descriptor 188
- Write Buffer Command (3Bh) 3 189
- Write Buffer Command (3Bh) 190
- Table 71 Write Buffer 190
- Command Data 190
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