User manual FREECOM TAPEWARE AIT-250I

Notice This document contains proprietary information which is protected by copyright. All rights reserved. No part of this document may be photocopied, reproduced or translated to another language without prior written consent of Sony. The information contained in this document is subject to change without notice. SONY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS DOCUMENT. Sony shall not be liable for errors contained herein, or indirect, special, incidental or consequential damages in connection with the furnishing, performance, or use of this document. © Copyright 2004 Sony Corporation For further information , please contact the appropriate Sony location listed below; Sony Corporation Electronic Devices Marketing Group Tape Streamer Marketing Section Gate City Osaki West Tower Osaki East Tec. 1-11-1 Osaki Shinagawa-ku, Tokyo, 141-0032 Japan TEL: (81) 3-5435-3486 FAX: (81) 3-5435-3565 Sony Electronics Inc. 3300 Zanker Road, San Jose, California 95134, U.S.A. TEL: (1) 408-432-1600 FAX: (1) 408-955-5533 TLX: 171331 SJESONY Sony Europe Semiconductor & Electronic Solutions The Heights, Blookland, Weybridge, Surrey KT13 OXW TEL: (01932) 81-6000 FAX: (01932) 81-7001 Sony of Canada Ltd. Communications & Information Systems Group Storage Marketing 115 Gordon Baker Road Toronto, Ontario M2H 3R6 TEL: (416) 499-1414 FAX: (416) 495-3331 Sony Electronics Singapore Pte Ltd Electronic Devices Marketing (Singapore) Computer Peripherals Division Enterprise Storage Solutions Department 2 International Business Park #01-10 Tower One The Strategy Singapore 609930 TEL: +65 6544 7322 FAX: +65 6544 7392 Sony Korea Corporation. 34F, ASEM Tower, World Trade Center, 159-1 Samsung-Dong, Kangnam-Ku, Seoul, 135-798 Korea TEL: 82-2-6001-4249 Sony Taiwan Limited, ODS Dept. DS Sect. 5F, 145 Changchun Road, Taipei 104, Taiwan TEL: (886) 2-2522-7953 FAX: (886) 2-2522-2237 Sony Corp. of Hong Kong Ltd. Beijing Rep. Office Electronic Device Marketing Hong Kong, Computer Peripheral Division Tower A, 11/F Full Link Plaza, No.18 Chaoyangmenwai Ave., Beijing, 100020 P.R.C. TEL: 86-10-6588-0633 FAX: 86-10-6588-0855 Sony Recording Media & Energy Latin America Storage Drive Group 5201 Blue Lagoon Drive Suite 390 Miami, FL 33126, U.S.A. TEL: (1) 305-260-4027 FAX: (1) 305-260-7850 Sony Brasil Ltda. Informatica Division Rua Inocencio Tobias, 125-Bloco A 01144-000 Sao Paulo, SP Brazil TEL: (55) 11-3613-9140 FAX: (55) 11-9158-8200 Changing List Page Clause Title SDX-250V Series Ver. 1.0 NOVEMBER, 2004 (RELEASE) Modify Add Delete Remarks This page intentionally left blank. Table of Contents 1. 1.1. 1.2. 1.3. 1.4. 1.4.1. Introduction About this Product Specification Manual Introducing the SONY AIT Technology Features of the Drive Reference How to get ECMA-222 Standard Document 111111 1 1 2 2 2. 2.1. 2.1.1. 2.1.1.1. 2.1.2. 2.1.3. 2.1.3.1. 2.2. 2.2.1. 2.2.2. 2.2.3. 2.2.4. 2.2.5. 2.2.6. 2.2.7. 2.2.8. 2.3. 2.3.1. 2.3.2. 2.3.2.1. 2.3.2.2. 2.3.3. 2.3.4. 2.3.5. 2.3.6. 2.3.7. 2.3.8. 2.3.9. 2.3.10. 2.3.11. 2.3.12. 2.3.13. 2.3.14. 2.4. 2.4.1. 2.5. 2.5.1. 2.6. Specifications Specifications Dimensions Mounting Holes Weight Connectors SCSI Cables and Terminators Environmental Specifications Temperature and Humidity Range Altitude Suspected Particulate Vibration Shock Acoustic Noise EMC Orientation Performance Specification Data Capacity Data Transfer Rate Sustained Data Transfer Rate to and from the Tape Burst Transfer Rate to and from the SCSI Bus Initialize Time Load Time Unload Time Search Time Rewind Time Error Rate Retry Limits on Rewrites Definition of Failure Mean Time Between Failures Mean Time to Repair Component Life Durability Safety Conditions of Acceptability Installation Requirements Power Requirements Data Compression 22222222222222222222222222222222222221 1 2 4 4 4 4 4 5 5 5 5 5 5 5 6 6 7 7 7 7 7 7 7 7 8 8 8 8 8 8 8 9 9 9 9 10 SDX-250V series Ver.1.0 Table of Contents 3. 3.1. 3.1.1. 3.1.2. 3.1.3. 3.1.4. 3.1.5. 3.1.6. 3.1.7. 3.1.7.1. 3.1.7.2. Installation Installation Guide SCSI ID Number Jumper Termination Power Switch Parity Disable Jumper Data Compression ON Switch Power Connector SCSI 68 pin Connector Attaching and Removing the Dust Cover Attaching the Dust Cover Removing the Dust Cover 33333333331 2 2 3 3 3 3 6 6 7 4. 4.1. 4.2. 4.2.1. 4.2.2. 4.2.3. 4.2.4. 4.2.5. 4.3. 4.3.1. 4.3.2. 4.3.3. 4.3.4. 4.3.4.1. 4.3.4.2. 4.4. 4.4.1. 4.4.1.1. 4.5. 4.5.1. 4.5.1.1. 4.5.1.2 4.5.1.3. 4.5.2. 4.5.2.1. 4.5.2.2. 4.5.2.3 4.5.2.4. 4.5.3. 4.5.4. Operation Summary of LED Indications Operator Action Powering up the SDX-250V Inserting Cassettes Removing Cassettes Hard Reset Hole Write-Protecting Cassettes Internal Function The Load Sequence The Unload Sequence Power-Fail or SCSI Reset Handling Diagnostic and Normal Status Displays Diagnostic Status Display Normal Status Display Tape Format Tape Partitions Formatting partitions Maintenance, Troubleshooting and Service Head Cleaning Message when cleaning cassette is necessary The condition of cleaning request Usage of cleaning cassette Troubleshooting Guide Operational Problems Read/Write Problems Replace Tape Media Warning Clearance for Service Packaging for Return to Sony 444444444444444444444444444441 2 2 2 2 2 3 3 3 3 4 4 4 5 5 5 5 6 6 6 6 6 6 7 9 9 9 9 9 SDX-250V series Ver.1.0 Table of Contents 5. 5.1. 5.1.1. 5.1.2. 5.1.3. 5.2. 5.2.1. 5.2.2. 5.3. 5.3.1. 5.3.2. 5.3.2.1. 5.3.2.2. 5.3.3. 5.3.4. 5.3.5. 5.3.6. 5.3.7. 5.3.8. 5.3.9. 5.3.10. 5.3.11. 5.3.12. 5.3.13. 5.4. SCSI Interface Introduction Overview of the SCSI Interface Supported Messages Supported and Unsupported Commands SCSI BUS Operation Typical SCSI Operation Disconnect Message Specification COMMAND COMPLETE (00h) EXTENDED MESSAGE (01h) SYNCHRONOUS DATA TRANSFER REQUEST (01h) WIDE DATA TRANSFER REQUEST SAVE DATA POINTER (02h) RESTORE POINTERS (03h) DISCONNECT (04h) INITIATOR DETECTED ERROR (05h) ABORT (06h) MESSAGE REJECT (07h) NO OPERATION (08h) MESSAGE PARITY ERROR (09h) BUS DEVICE RESET (0Ch) IDENTIFY (80h-FFh) IGNORE WIDE RESIDUE (23h) Status Specification 5555555555555555555555551 1 1 1 2 2 3 4 4 5 5 6 8 8 8 8 9 9 9 9 9 10 10 10 6. 6.1. 6.2. 6.3. 6.4. 6.5. 6.6. 6.6.1. 6.6.2. 6.6.3. 6.6.3.1. 6.6.4. 6.6.5. 6.6.6. 6.6.7. 6.6.8. 6.6.9. 6.6.10. 6.6.11. 6.7. Command Specification ERASE 19h INQUIRY 12h LOAD/UNLOAD 1Bh LOCATE 2Bh LOG SELECT 4Ch LOG SENSE 4Dh The Log Page Descriptor The Log Parameter Descriptor Supported Log Pages Summary List of Supported Pages Write and Read Error Counters Pages Last N Error Events List Tape Log Page (Sony Unique) Tape Capacity Log Page Drive Usage Log Page (Sony Unique) Read and Write Frame Error Counter Page Data Compression Transfer Log Page AIT Log Page (3Ch) MODE SELECT 15h 66666666666666666662 3 8 9 10 12 13 14 15 15 16 17 18 19 20 21 22 23 26 SDX-250V series Ver.1.0 Table of Contents 6.7.1. 6.7.2. 6.7.3. 6.7.4. 6.7.5. 6.7.6. 6.7.7. 6.8. 6.8.1. 6.9. 6.10. 6.11. 6.12. 6.13. 6.14. 6.15. 6.16. 6.17. 6.18. 6.19. 6.20. 6.21. 6.22. 6.23. 6.24. 6.25. 6.26. 6.26.1. 6.26.2. 6.26.2.1. 6.26.2.2. 6.27. 6.28. 6.29. 6.30. 6.31. Disconnect-Reconnect Page (02h) Data Compression Control Page (0Fh) Device Configuration Page (10h) Medium Partitions Parameter Page (11h) Medium Partitions Parameter Page (for multi-partitioned tapes)(11h) Informational Exceptions Control Page (1Ch) AIT Device Configuration Page (31h) MODE SENSE 1Ah Mode Sense 31h (AIT Device Configuration Page) PERSISTENT RESERVE IN 5Eh PERSISTENT RESERVE OUT 5Fh PREVENT ALLOW MEDIUM REMOVAL 1Eh READ 08h READ BLOCK LIMITS 05h READ BUFFER 3Ch READ POSITION 34h RECEIVE DIAGNOSTIC RESULTS 1Ch RELEASE UNIT 17h REPORT DENSITY SUPPORT 44h REPORT LUNS A0h REQUEST BLOCK ADDRESS 02h REQUEST SENSE 03h RESERVE UNIT 16h REWIND 01h SEEK BLOCK 0Ch SEND DIAGNOSTIC 1Dh SPACE 11h CHECK CONDITION Sony SDX-250V Unique Implementation for SPACE Super High Speed Search Data Buffer Management TEST UNIT READY 00h VERIFY 13h WRITE 0Ah WRITE BUFFER 3Bh WRITE FILEMARKS 10h 666666666666666666666666666666666666- 29 30 32 34 36 38 39 41 43 44 48 50 51 53 54 56 58 60 61 63 64 65 73 74 75 76 78 80 80 80 80 81 82 84 86 88 7. 7.1. 7.2. 7.2.1. 7.2.2. 7.2.3. 7.2.4. 7.2.5. Drive Diagnostics Overview Diagnostic Test Power-on Self Test SEND DIAGNOSTIC command ­ Self Test SEND DIAGNOSTIC command ­ Individual Test Diagnostic Test Number Summary RECEIVE DIAGNOSTIC RESULT command 77777771 1 1 2 2 3 4 SDX-250V series Ver.1.0 Table of Contents 7.2.6. 7.2.7. 7.2.7.1. 7.2.7.2. Diagnostics Results Reference Diagnostic Tests Requiring Additional Parameters Error Rate Test (02) Diagnostic Parameters Read Data Exerciser (43h) Diagnostic Parameters 7777891011- 6 7 7 9 1 1 1 1 8. 9. 10. 11. 12. 12.1. 12.2. 12.3. 12.4. 12.5. 12.5.1. 12.5.2. 12.5.3. 12.5.4. 12.5.5. 12.6. Appendix A: ASC & ASCQ Alphabetic Order Appendix B: ASC & ASCQ Numeric Order Appendix C: SCSI Commands (OP Code Order) Appendix D: ASC & ASCQ for AIT (Sony Unique) Appendix E: Disaster Recover Overview Creating Disaster Recovery Tape Configuring the Drive for Disaster Recovery Operation Exiting DR Mode Supported CDROM DR Command Set Inquiry (12h) Read 10 (28h) Read Capacity (0x25) Read TOC (0x43) Mode Sense/Select Page Code 0x3C Reset Handling 121212121212121212121213- 1 1 1 1 1 1 1 1 2 2 2 1 13. Appendix F: Glossary SDX-250V series Ver.1.0 Table of Contents This page intentionally left blank. SDX-250V series Ver.1.0 Table of Contents 1.Introduction 1. Introduction 1.1. About this Product Specification Manual This Product Specification Manual is applicable for AIT-E Turbo drive. This manual provides information about the Sony SDX-250V series Advanced Intelligent Tape Drives which is necessary to integrate the drives into OEM products. This manual describes the specifications, SCSI Interface, diagnostics, operation and installation of the Sony AIT-E Turbo Tape Drives. The Sony SDX-250V drive uses data compression to achieve high capacity and high transfer rates. Actual capacity and transfer rate depends on the source file type. The capacity ratings listed in the next subsection are based on a 98 meter tape AIT-E Turbo cassette. The Sony SDX-250V drive is a high capacity data storage device using Advanced intelligent tape (AIT) technology. The Sony SDX-250V drive achieves high data integrity through read-after-write, an additional level of Error Correction Code, and other features. 1.2. Introducing the Sony AIT Technology While magnetic storage technologies continue to push the envelope of recording density and provide higher capacities and transfer rates every 18 to 24 months, improvements in time to access this data have become very limited. Since 1990, tape recording densities have increased up to ten fold, while the time to access this data has increased less than two fold, creating a large mismatch between the amount of stored data and the ability to access it. This large "gap" between data access latency and area density has created a dilemma in application development and limited the potential to implement truly cost-effective tertiary storage solutions. Many applications compensated for this deficiency by incorporating multiple redundant tape drives, at higher cost, to achieve an acceptable level of service for their users. Sony's new Advanced Intelligent Tape design has recognized this need and provided an innovative approach to solving the data latency problem while increasing capacity and data transfer rates. Traditional, older tape technologies relied mostly on conventional mechanical means, such as faster search speeds or an on-tape index to improve access to stored data. While improvements in electronics and magnetics have been the main enablers of increased capacity and transfer rates, rarely have these same technologies been employed to significantly improve access to data. 1.3. Features of the Drive Major features of the Sony SDX-250V include: · Capacity 20 Gbyte typical when using 98 meter tape AIT-E Turbo cassette (TAITE-20N) 52 Gbyte with 2.6:1 Data Compression · Sustained transfer rate 6 Mbyte/sec · Supported Format: AIT-E Turbo · Not compatible with the DDS and EXABYTE format tapes · Burst transfer rate 15.6 Mbyte/sec Asynchronous 40 Mbyte/sec Synchronous SONY AIT-E Turbo drive SDX-250V series Ver.1.0 1-1 1.Introduction · Large 12 MB Buffer Memory · 3.5" Standard Height, 5.25" Half Height · Embedded SCSI interface (Ultra/WIDE, Single-ended or Low Voltage differential) · Supports Variable or Fixed record length · Supports SCSI Disconnection/Arbitration · Read After Write (RAW) On and Off capability · Read Retry On and Off capability · Frame rewrite function · Three levels of Error Correction Code (ECC) · High Speed search (120 times nominal Read/Write speed) · Random read, Append write · Repeat Write option 1.4. Reference Please refer to the following documents for additional information: · SCSI-2 1ANSI X3.131.-1996 Small Computer Systems Interface-2 (SCSI-2). · SCSI Parallel Interface-2 (SPI-2) ANSI X3T10-1142D rev 20b. ANSI X3T9.2/86-109 (Revision 10H, or above), available through ANSI. · ALDC - Adaptive Lossless Data Compression (ALDC) Algorithm; ECMA-222, available through 2ECMA. 1.4.1. How to get ECMA-222 Standard Document You can get these ECMA Standard Document file from the following URL. http://www.ecma-international.org/publications/standards/standard.html 1 2 ANSI (American National Standard for Industry) ECMA (European Computer Manufacturers Association) SONY AIT-E Turbo drive SDX-250V series Ver.1.0 1-2 2.Specification 2. Specifications Physical, environmental and performance specifications for the SDX-250V and SDX-250V/RP. 2.1. Specifications 2.1.1. The SDX-250V Height Width Depth The SDX-250V/RP Height Width Depth 41.2 mm (1.62 in) 146.0 mm (5.75 in) 155.0 mm (6.10 in) ± 0.5 mm (0.02 in) ± 0.5 mm (0.02 in) ± 0.5 mm (0.02 in) 41.2 mm (1.62 in) 101.6 mm (4.00 in) 155.0 mm (6.10 in) ± 0.5 mm (0.02 in) ± 0.5 mm (0.02 in) ± 0.5 mm (0.02 in) Dimensions Note: The above dimensions do not include the front panel thickness, eject button and SCSI connector. _ Height 41.2 + 0.5mm _ [1.62" + 0.02"] _ Width 101.6 +0.5mm _ 0.02"] [4.00" + _ 7.4 + 0.6mm _ [0.29" + 0.02"] _ 7.6 + 0.5mm _ [0.30" + 0.02"] _ Depth 155.0 +0.5mm _ + 0.02"] [6.10" Figure 2-1: Dimensions (SDX-250V) SONY AIT-E Turbo drive SDX-250V series Ver.1.0 2-1 2.Specification 2.1.1.1. Mounting Holes Figure 2-2a gives details of the mounting holes for the Sony SDX-250V and figure 2-2b for the Sony SDX-250V/RP. _ 4.8 + 0.5mm _ [0.19" + 0.02"] _ 21.0 + 0.3mm _ [0.83" + 0.01"] _ 60.0 + 0.3mm _ [2.36"+ 0.01"] _ _ 90.0 +0.3mm [3.54" + 0.01"] 6-M3 (depth 2.5mm [0.10"] max.) 6-M3 (depth 2.5mm [0.10"] max.) _ _ 7.4 + 0.6mm [0.29"+ 0.02"] _ _ 9.8 + 0.6mm [0.39" + 0.02"] _ 41.2 +0.5mm _ [1.62" + 0.02"] _ _ 101.6 + 0.5mm [4.00" + 0.02"] _ _ 155.0 + 0.5mm [6.10" + 0.02"] _ 31.0 + 0.3mm _ [1.22" + 0.01"] _ _ 94.0 + 0.5mm [3.70" + 0.02"] _ 42.0 + 0.3mm _ [1.65" + 0.01"] _ _ 70.0 + 0.3mm [2.76"+ 0.01"] Figure 2-2a: SDX-250V Mounting Holes 2-2 SONY AIT-E Turbo drive SDX-250V series Ver.1.0 2.Specification _ 21.8 + 0.5mm _ [0.86"+ 0.02"] _ 9.9 + 0.5mm _ [0.39" + 0.02"] _ _ 79.2 +0.3mm [3.12" + 0.01"] _ 7.0 + 0.5mm _ [0.28" + 0.02"] _ 9.8 + 0.6mm _ [0.39" + 0.02"] _ 31.0 +0.3mm _ [1.22" + 0.01"] _ 41.2 +0.5mm _ [1.62" + 0.02"] _ 47.5 + 0.3mm _ [1.87"+ 0.01"] _ 7.4 + 0.6mm _ [0.29" + 0.02"] 6-M3 _ _ 79.2 + 0.3mm [3.12" + 0.01"] _ _ 155.0 + 0.5mm [6.10" + 0.02"] _ _ 70.0 +0.3mm [2.76" + 0.01"] _ 42.0 + 0.3mm _ [1.65"+ 0.01"] SONY AIT-E Turbo drive SDX-250V series Ver.1.0 _ _ 149.0 +0.5mm [5.87"+ 0.02"] _ _ 146.0 + 0.5mm [5.75"+ 0.02"] _ _ 139.6 + 0.5mm [5.50"+ 0.02"] _ _ 94.0 + 0.5mm [3.70" + 0.02"] _ 47.5 + 0.3mm _ [1.87"+ 0.01"] 4-M3 _ _ 79.2 + 0.3mm [3.12"+ 0.01"] Figure 2-2b: SDX-250V/RP Mounting Holes 2-3 2.Specification 2.1.2. SDX-250V SDX-250V/RP Weight 740 grams, without a cassette and a front bezel. 970 grams, without a cassette and a front bezel. 2.1.3. Connectors The SDX-250V has a SCSI connector with a power connector and Jumpers at the positions shown in Figure 2-3. All other connectors are for use by Sony's manufacturing and service facilities only. Jumpers SCSI 68 pin Connector Power Connector Figure 2-3: Connector Positions 2.1.3.1. SCSI Cables and Terminators The Single-Ended SCSI configuration and Low-Voltage-differential SCSI configuration are supported by SDX-250V and SDX-250V/RP. The hardware specification of this interface can be found in Clause 3. Physical Characteristics, of the X3T10/1142D (SCSI Parallel Interface2) standard. Only unshielded connectors are supported. Possible cable and connector sources are listed below. This does not imply that these are the only sources for SCSI accessories. Note: When using high speed data transfer with the SDX-250V it is recommended that total length of the SCSI data cable not exceeded 1.5m for Single Ended SCSI configuration. As for Low-Voltage-differential SCSI configuration , less than 12m is recommended. Cable Connector 30 AWG Ribbon Hitachi UL 20848 (or equivalent) AMP 1-786090-7 (or equivalent) 2.2. Environmental Specifications The specifications which apply when media is present may be different than these. 2.2.1. Temperature Temperature and Humidity Range 5 ºC to 40 ºC (T < 10 ºC/h) -40 ºC to 70 ºC (T < 20 ºC/h) -40 ºC to 45 ºC (T < 20 ºC/h) 20 to 80% RH, non-condensing Maximum wet bulb temperature : 26 ºC 5 to 95%RH(RH<30%/h) Maximum wet bulb temperature : 45 ºC 20 to 80%RH(RH<30%/h) Operating Non-Operating(mech.) Non-Operating(tape) Humidity Operating Non-operating (mech.) Non-operating (tape) 2-4 SONY AIT-E Turbo drive SDX-250V series Ver.1.0 2.Specification 2.2.2. 2.2.3. Altitude 0 to 10,000 feet Operating Suspended Particulate Less than 150 microgram/m3 Based Sampling period 24 hours Operating 2.2.4. Vibration Swept Sine 5 to 500Hz, @0.25G Peak 1 Octave/min. 3 axis, 3 directions Swept Sine 5 to 500Hz, @ 0.5G Peak 1 Octave/min. 3 axis, 3 directions Operating Non-operating 2.2.5. Shock No Data Loss Half Sine Performance 5 G Peak 3 ms 3 axes, 3 directions *Interval 10 seconds Operating Non-operating No Device Damage Half Sine 90 G Peak 3 ms (30 G Peak 11 ms) 3 axes, 3 directions *Interval 10 seconds 2.2.6. Acoustic Noise The ambient noise level is no greater than 25 dB (A). The sound-meter on (A) scale is located 1m in front of the center of the drive front panel. (A): A curve weight Streaming Write/Read Insert/Eject 35dB(A) 60dB(A) 2.2.7. EMC Radiated Emissions/Conducted noise Emissions ESD (Front Panel Only, integrated product) EN 55022 (1998) class B EN 55024 (1998) A1 (2001) +A2 (2003) class B Discharge Voltage Less than 15kV: No operation failure Less than 20kV: No drive damage EMI/EMS EMS 2.2.8. Orientation The SDX-250V can be installed in three different mounting positions as shown in the figure below. Each position has a maximum tolerance of ±10 degrees. SONY AIT-E Turbo drive SDX-250V series Ver.1.0 2-5 2.Specification 10 10 10 10 10 10 10 10 Figure 2-4: Mounting Attitude and Tolerance 2.3. Performance Specification The data capacity, data transfer rate and data reliability specifications this chapter require the media to conform to the AIT-E Turbo Media Specification and also require the drive and media to remain within their respective operating and non-operating environmental specifications. The specifications below also assume that the C3 ECC frame is generated on writing and used as necessary on reading, and further assumes that read-after-write rewrites are used as necessary on writing. 2.3.1. Data Capacity The SDX-250V includes a data compression capability. When data compression is enabled the drive capacity can increase from 2 times to 3 times. The efficiency of the data compression depends on the actual data that is being compressed and cannot be predicted precisely prior to compression. Format Native Capacity AIT-E Turbo Standard Format 20.0 Gbyte typical When using 98 meter tape AIT-E Turbo cassette (TAITE-20N) 2-6 SONY AIT-E Turbo drive SDX-250V series Ver.1.0 2.Specification 2.3.2. 2.3.2.1. Data Transfer Rate Sustained Data Transfer Rate to and From the Tape The sustained transfer rate to and from the tape is 6Mbyte per second with AIT-E Turbo cassette. For this sustained rate to be achieved, the drive must be streaming. There may be some dependency on the host for this to be achieved. 2.3.2.2. Burst Transfer Rate to and From the SCSI Bus The SDX-250V will transmit and receive data bursts to and from the SCSI bus at a maximum burst rate of 12 Mbyte per second, using WIDE SCSI asynchronous transfers and 40 Mbyte per second, using WIDE SCSI synchronous transfers. 2.3.3. Initialize Time Initialize Time means the period from the time the drive is powered on to the time when the drive is ready and waiting for a SCSI command such as INQUIRY or TEST UNIT READY. Initialize Time is less than 5 seconds. The drive will respond with BUSY status until the completion of the Initialize Time. The Initialize Time does not include the time necessary for drive diagnostics to complete and the drive to become ready for tape insertion. 2.3.4. Load Time Load Time means the period from the time when the operator inserts a cassette into the drive to the time when the drive is ready. The data in the below table represents the average time for SDX-250V. The time it may take for retrying is not reflected here. TAITE-20N (98m) Load Time 25 sec 2.3.5. Unload Time Unload Time means the period from the beginning of the unload sequence caused by Unload Command or Eject button to the time when a cassette is ejected from the slot. Unload Time does not include Rewind time. The data in the below table represents the average time for SDX-250V. The time it may take for retrying is not reflected here. TAITE-20N (98m) Unload Time 30 sec 2.3.6. Search Time Search Time means the period for the drive to find the position that is required by a command. This time also depends on the tape length and the position of the head along the tape. The data in the below table represents the average time for SDX-250V. The time it may take for retrying is not reflected here. TAITE-20N (98m) Search Time 70 sec 2.3.7. Rewind Time Rewind Time means the period from the beginning to the end of rewinding sequence. This value depends on the tape length and the position of the head along the tape. The data in the below table represents the average time for SDX-250V. The time it may take for retrying is not reflected here. TAITE-20N (98m) Rewind Time 60 sec SONY AIT-E Turbo drive SDX-250V series Ver.1.0 2-7 2.Specification 2.3.8. 2.3.9. Error Rate Retry Limits on Rewrites The un-correctable bit error rate is expected to be less than 1 in 10 to the 17th. For Read-after-Write error correction, each frame can be rewritten up to a maximum of 63 times giving 64 writes of the frame. With Repeat Writing, where every group is written a fixed number of times, the upper limit is 5. 2.3.10. Definition of Failure A failure is defined as any permanent manufacture of the drive that prevents the user from retrieving data from tape. This includes failure to power up, failure to unload or eject a cassette, or failure to write and read data to and from the tape, providing that both the drive and tape are being used within specification. Faults are not considered failures when they are related to operator error mishandling and abuse, system-related faults (cabling problems unsupported systems, operating software and so on) no trouble found, and transportation damage. 2.3.11. Mean Time Between Failures The Mean Time Between Failures (MTBF) for the SDX-250V is 300,000 power-on hours, assuming a duty cycle of 100%, where: DutyCycle = Tape Motion Time PowerOn Time × 100 2.3.12. Mean Time to Repair The Mean Time To Repair (MTTR) of the SDX-250V is 30 minutes. Since at the field level the entire drive is considered a Field Replaceable Unit (FRU) the time to replace the drive with a new one is less that 30 minutes. 2.3.13. 2.3.14. Component Life Durability 400,000 times 3,000,000 times 100,000 times 100,000 times The specified life of the SDX-250V is 5 years average. The durability of the components in the SDX-250V will exceed the number of operations listed on the following table: Start/Stop Reposition Thread/Unthread Load/Eject 2-8 SONY AIT-E Turbo drive SDX-250V series Ver.1.0