User manual QUANTUM LTO3 DRIVE

[. . . ] Quantum LTO-3 Tape Drive User's Guide, P/N 50002764, B01, July 2005 Made in USA. 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. COPYRIGHT STATEMENT Copyright 2005 by Quantum Corporation. [. . . ] Because varying types of data are encountered in normal day-to-day operating circumstances, however, an effective data compression method for a tape drive must serve various data types. Additionally, the data compression method must adapt to different data types, automatically providing optimum handling for all types of data. Intelligent Data Compression 4 The tape's compressed capacity is maximized through the use of intelligent data compression. The intelligent data compression hardware determines the compressibility of each record. If the size of the record is larger after a compression attempt than the native (uncompressed) size, then the record is written in its native form. The intelligent data compression utilizes two compression schemes: · · Scheme-1 is a LZ1-based compression scheme using a history buffer to achieve data compression. Scheme-2 is a pass-through compression scheme designed to pass uncompressible data through with minimal expansion. There are three specific requirements for compliance with the LTO specification. · · · The output data stream must be decompressible following LTO rules to create the input sequence of records and File Marks perfectly. An LTO compressed data stream may not contain any of the eight reserved Control Symbols. While control symbols allow switching to Scheme 2, this should never be used by operational software because this capability is only for diagnostic and testing purposes. LTO-3 Tape Drive User's Guide 37 Chapter 4 Theory Data Compression Software data compression should never be used because the LTO-3 Tape Drive's built-in intelligent data compression is much more efficient than software data compression systems. The LTO-3 Tape Drive uses a derivative of ALDC-2 lossless data compression that includes additional control codes for intelligent data compression. 38 LTO-3 Tape Drive User's Guide Chapter 5 5Specifications This chapter provides technical specifications for the LTO-3 Tape Drive. The topics covered in this chapter are: · · · · · · · · · Physical Specifications Power Specifications Drive Performance Specifications Environmental Requirements Reliability Mean Time Between Failures LTO Cartridge Specifications Regulatory Compliance Disposal of Electrical and Electronic Equipment LTO-3 Tape Drive User's Guide 39 Chapter 5 Specifications Physical Specifications Physical Specifications Table 5 lists the physical specifications of the LTO-3 Tape Drive. 5 Table 5 Physical Specifications Specification Height Width Length Weight 1 2 Internal SCSI Drive without Bezel 3. 25 inches (82. 6 mm) max 5. 75 inches (146. 05 ± 0. 25) 8. 06 inches (205 mm) 6. 2 lb. (2. 82 kg) Internal SCSI Drive with Bezel 3. 31 inches (84. 3 mm) 5. 81 inches (147. 8 mm) 8. 3 inches (212 mm) max 6. 5 lb. (2. 95 kg) Desktop SCSI Drive 6. 8 inches1 (172. 7 mm) 7. 61 inches (193. 3 mm) 12. 17 inches2 (309. 1 mm) 14. 5 lb. (6. 58 kg) Includes rubber feet (case alone is 6. 44 inches high). Includes front bezel and fan grill (case alone is 11. 9 inches long). 40 LTO-3 Tape Drive User's Guide Chapter 5 Specifications Physical Specifications Figure 14 shows the dimensions of the internal LTO-3 Tape Drive. Figure 14 Internal LTO-3 Tape Drive Dimensions 212. 0 Max. (Less connectors) 55. 9 79. 24 ± 0. 20 84. 3 21. 80 ± 0. 20 82. 6 Max 48. 90 ± 0. 60 From Upper Bezel Mounting Tabs 4 x M3. 0 Nearside 4 x M3. 0 Farside 205. 0 Max. Length of Drive without Bezel (Less connectors) 9. 90 ± 0. 20 4 x M3. 0 x 5. 0 Deep 189. 70 ± 0. 20 146. 05 ± 0. 25 147. 8 48. 90 ± 0. 60 From Upper Bezel Mounting Tabs 79. 24 ± 0. 20 LTO-3 Tape Drive User's Guide 41 Chapter 5 Specifications Power Specifications Power Specifications The desktop LTO-3 Tape Drive comes with a built-in 90-260VAC (47-63 Hz) automatic switching power supply. Maximum voltage and power specifications for the internal LTO-3 Tape Drive is listed in the tables below. Specifications are the same for SCSI drives unless otherwise noted. 5 Table 6 Voltage and Current Specification DC Voltage Tolerance Non-operating max voltage Max operating current Continuous: Peak: Standby current (max) Ripple (peak-to-peak) +12 VDC 12. 00 + or ­ 10% 14 Volts peak + 5VDC 5. 00 + or ­ 5% 7 Volts peak 1. 2 amps RMS 4. 0 amps (1 sec max) 1. 0 amps RMS < 100 mV 3. 5 amps max RMS* N/A 2. 0 amps RMS* < 100 mV * RMS parameters measured at the power connector using a true RMS digital meter. Table 7 Power Dissipation Specification Max Standby Power Max Continuous Operating Power Max Peak Operating Power LTO-3 17 watts RMS* 42 watts RMS* 65 watts RMS (1 sec max) * RMS parameters measured at the power connector using a true RMS digital meter. 42 LTO-3 Tape Drive User's Guide Chapter 5 Specifications Drive Performance Specifications Drive Performance Specifications Table 8 lists the performance specifications for the LTO-3 Tape Drive. 5 Table 8 Drive Performance Specifications Specification Capacity LTO Ultrium 3 (680 m) Recording density Flux density Track density Error recovery Recording unrecoverable errors Recording undetectable errors Tape drive type Head configuration Value 400 Gbytes (native) 5, 120 RLL-encoded ONEs per mm 10249 cells per mm 70 tracks per mm Read-after-write Reed Solomon ECC (2 levels) Less than 1 in 1017 data bits Less than 1 in 1027 data bits LTO (Ultrium) 2 bumps 16 thin-film write heads per bump 16 MR read heads per bump 2 MR servo heads per bump Ultrium 16-channel (U-38) 0, 13/11 RLL 68 Mbytes/second (max, native) 160 Mbytes per sec max 30 seconds Recording format Recording method Transfer rate (sustained) Synchronous transfer rate (burst) Cartridge unload time LTO-3 Tape Drive User's Guide 43 Chapter 5 Specifications Environmental Requirements Specification Average rewind time (609-m tape) Maximum rewind time (609-m tape) Average data access time (609-m tape) from BOW (beginning of wrap) Maximum data access time (609-m tape) from BOW Average rewind time (609-m tape) Tape speed Value > 51 seconds < 115 seconds 58 seconds 115 seconds < 115 seconds Up to 5. 9 meters per second Environmental Requirements Table 9 lists the environmental specifications for the LTO-3 Tape Drive. 5 Table 9 Environmental Requirements Specification Temperature Airflow requirements Thermal gradient Relative humidity Operational +50° to +104°F (+10° to + 40°C) Internal: 9 CFM (front to back) 11°C per hour (10-40°C) 20% to 80% non-condensing Non-operational ­40° to +149°F (­40° to + 66°C) N/A 11°C per hour (10-40°C) 10% to 95% non-condensing 44 LTO-3 Tape Drive User's Guide Chapter 5 Specifications Reliability Specification Humidity gradient Altitude Shock (1/2 sine wave) Vibration (sweep test) Operational 10% per hour max 10, 000 feet MSL (at 25°C) 10 Gs peak, 11 msec 0. 005 inches DA (5-43 Hz) 0. 50 G peak (43­1000 Hz) sweep rate 5-1000Hz; 1. 0 octave per minute 52 dBA maximum 5. 0 LwA Bels 57 dBA maximum 5. 5 LwA Bels Non-operational 10% per hour 40, 000 feet (power off) 40 Gs peak, 11 msec 0. 1 inches (5-­15Hz) 1. 0 G (15­500 Hz) 1. 0 octave per minute -- -- Acoustic level idling (A-wt sum) Acoustic level operational (A-wt sum) Injected Noise 5 The internal drive operates without degradation of error rates with 100 mV of noise injected between the chassis and 0 V at the power connector at any frequency between 45 Hz and 20 MHz. Reliability The LTO-3 Tape Drive is designed for maximum reliability and data integrity. Table 10 summarizes the reliability specifications. 5 LTO-3 Tape Drive User's Guide 45 Chapter 5 Specifications Mean Time Between Failures Table 10 Reliability Specification Non-recoverable error rate Error recovery and control Description Less than 1 in 1017 bits · Error correction code techniques (C1 and C2 ECC) · Read-after-write (RAW) · Error monitoring and reporting (error log) · Retry on Mean time between failures (MTBF) 250, 000 hours MTBF at 100% duty cycle: power applied and tape moving continuously (Desktop drive; 50, 000 hours at full load and 25°C) 300, 000 cartridge load/unload cycles (no thread) Less than 30 minutes Cartridge load/ unload Mean time to replace (MTTR) Mean Time Between Failures 5 The mean time between failures (MTBF) for the internal drive is specified at 250, 000 hours minimum. This specification includes all power-on and operational time but excludes maintenance periods. Operational time is assumed to be 100% of the power-on time. [. . . ] 2 Wait for the current operation to finish. 3 Then use a valid cleaning cartridge. 78 LTO-3 Tape Drive User's Guide Chapter 7 Troubleshooting Guide Troubleshooting Suggestions This message means the tape drive does not recognize the cleaning tape as being of a valid type. You may have purchased a cleaning tape that is not supported by the tape drive. 3 If the tape drive issues a message to backup software to instruct you to clean the tape drive, you may see the message: The tape drive needs cleaning: 1 If the operation has stopped, eject the tape and clean the drive. [. . . ]