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Copyright Copyright 1993 by Exabyte Corporation. All rights reserved. This item and the information contained herein are the property of Exabyte Corporation.
Agency Standards When properly installed with a shielded enclosure, shielded cable, and adequate grounding the of the SCSI bus and the input power, the EXB-8500 and EXB-8500c meet the following safety standards: UL Standard 1950, 1st Edition, Information Technology Equipment; CAN/CSA Standard C22.2 No. 950-M-89, Safety of Information Technology Equipment; and IEC 950/EN60950, Safety of Information Technology Equipment including Electrical Business Equipment (TUV).
Product Warranty Caution The EXB-8500 and EXB-8500c 8mm Cartridge Tape Subsystems (tape drives) are warranted to be free from defects in materials, parts, and workmanship and will conform to the current product specifications upon delivery. For the specific details of your warranty, refer to your sales contract or contact the company from which the tape drive was purchased.
Contents Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . 8 Conventions Used in This Guide . . . . . . . . . . . . . . . . . 8 For More Information . . . . . . . . . . . . . . . . . . . . . . . 8 1 Installing the Tape Drive . . . . . . . . . . . . . . . . . . 9 Unpacking the Tape Drive . . . . . . . . . Ensuring ESD Protection . . . . . . . . . . Setting the SCSI ID . . . . . . . . . . . . .
EXB-8500/EXB-8500c 306261
W elcome Thank you for selecting the EXABYTE® EXB-8500 or EXB-8500c 8mm Cartridge Tape Subsystem (tape drive). The EXB-8500 and the EXB-8500c (shown below) are high-capacity, high-performance, and highly reliable streaming tape drives for PC, super-mini, and mainframe computer systems. Packaged in a standard 5.25-inch form-factor, the EXB-8500c and EXB-8500 are identical on the outside except for the letter “c” on the EXB-8500c’s front panel unload button. The EXB-8500 provides up to 5.
About This Guide Use this guide as you install and operate the tape drive. In addition to instructions for installation and operation, this guide provides information about selecting and maintaining data cartridges, cleaning the tape drive, and packing the tape drive for shipment. Conventions Used in This Guide This guide uses the following conventions to highlight special information: Note: Notes provide hints or suggestions about the topic or procedure being discussed.
1 Installing the Tape Drive This section provides instructions for the following tasks: ■ ■ ■ ■ ■ ■ Unpacking the tape drive and ensuring ESD protection (page 10) Setting the SCSI ID (page 11) Preparing the tape drive for the SCSI bus (page 14) Installing the tape drive in a PC drive bay (page 17) Connecting the tape drive to the power supply (page 20) Performing the initial power on (page 20) Table 1 lists the tools and equipment you will need.
1⁄ 4-inch female spade connector or M3-0.5 6 mm self-tapping screw Can be used for additional chassis grounding. Unpacking the Tape Drive The tape drive’s packaging is designed to protect the tape drive from shock, vibration, moisture, and electrostatic discharge (ESD). Save all original packaging in case you need to repack or ship the tape drive.
discharge static electricity from your body before handling the tape drive. (Touch a known grounded surface, such as your computer’s metal chassis.) If you must lay the tape drive down, place it into or on top of the antistatic bag. ■ Setting the SCSI ID After unpacking the tape drive, you can change the tape drive’s default SCSI ID, if necessary. Do not use SCSI ID 7. This SCSI ID is used by your SCSI adapter card.
Setting the SCSI ID with the DIP Switches To set the SCSI ID using the DIP switches, follow these steps: 1. Locate the SCSI ID DIP switches on the back of the tape drive, as shown in Figure 1. 2. Change the DIP switch settings to the correct SCSI ID for your configuration. Figure 2 shows the settings for SCSI IDs 0 through 7. 3. Make sure that the remote switch or jumpers are set to SCSI ID 0.
On Off On Off Figure 2 DIP switch settings for the tape drives’s SCSI Setting the SCSI ID with Jumpers To set the SCSI ID using jumpers, follow these steps: 1. Locate the SCSI ID jumper block on the back of the tape drive, as shown in Figure 1. 2. Install the jumpers on the jumper block to obtain the correct SCSI ID for your configuration. Figure 3 shows how to position the jumpers for SCSI IDs 0 through 7. 3. Make sure that the DIP switches are set to SCSI ID 0.
Setting the SCSI ID with a Remote Switch If you want to set the SCSI ID remotely, you can attach a remote switch assembly (not provided with the tape drive) to the tape drive’s SCSI ID jumper block. To set the SCSI ID with a remote switch, follow these steps: 1. Locate the SCSI ID jumper block on the back of the tape drive, as shown in Figure 1. 2. If necessary, remove the jumpers from the pins. 3. Connect a remote switch to the jumper block. Ensure that the remote switch is no more than 30.
Terminating a Single-Ended Tape Drive The single-ended tape drive includes two single in-line package resistor terminators (R-packs) that can be left in place if the tape drive terminates the SCSI bus. CAUTION The R-packs must be removed if the tape drive does not terminate the SCSI bus or if you plan to use an external SCSI bus termination.
2. Using a pair of flat-nose wiring pliers, grasp each R-pack at the center and pull it straight out. Be careful not to squeeze the pliers too tightly or you may break the R-pack. Replacing the R-Packs If you need to put the R-packs back in the tape drive, make sure that pin 1 of each R-pack is aligned with pin 1 of the socket and that no pins are bent. As shown in Figure 4, the writing on the R-pack should face upward.
Figure 5 Location of SCSI connector Installing the Tape Drive in a PC Drive Bay If you are planning to mount the tape drive in a full-high PC drive bay, follow the guidelines in this section. Otherwise, refer to Appendix A for installation requirements, then resume reading on page 20, “Performing the Initial Power On.” Before beginning, prepare your computer as follows: 1. Turn off the computer and attached devices. 2. Unplug the power cord. 3.
5. If necessary, remove one of the floppy disk drives to provide an empty full-high drive bay for the tape drive. CAUTION If you remove floppy disk drive B to install the tape drive, be sure to change your system configuration to reflect this. Refer to your computer owner’s manual for details on running the system’s setup program. Mounting Procedure Follow these steps to mount the tape drive: 1. Check for the presence of a load resistor in the computer.
3. From the front of the computer, thread the SCSI cable into the computer through the open bay. Slide the tape drive into the bay until the faceplate is flush with the front of the bay. 4. Secure the tape drive to the drive bay as instructed in your computer owner’s manual. 5. Connect the SCSI cable to your SCSI adapter card (see Figure 7). Figure 7 6.
Figure 8 7. Location of grounding tab, grounding hole, and power connector Connect power cable from the power supply to the 4-pin power connector on the back of the tape drive. CAUTION ■ Make sure that the PC power is off before you connect the cable. ■ Do not force the plug into the connector. The keyed edges of the plug and the connector must match. 8. Replace the computer’s cover.
When power is applied, the tape drive performs its power-on initialization and self-test (POST). Assuming that no data cartridge is loaded and that the tape drive is connected correctly, POST takes about 65 seconds, as follows: ■ During the first part of POST, both the amber and green LEDs are lit. ■ During the second part of POST, various combinations of the LEDs may be lit, depending on whether the tape drive is connected to the SCSI bus and whether a data cartridge is loaded.
4. Push the door shut and wait while the tape drive loads the tape and positions it at LBOT. When the amber LED is off and the green LED is on, the tape is loaded and the tape drive is ready. 5. Write approximately 500 MBytes of data to the tape. 6. Read the data written in step 5. 7. Repeat steps 5 and 6 at least two times or for two hours (whichever is greater). Note: If errors occur, reset the tape drive and repeat steps 5 though 7 as appropriate. If the error recurs, contact your vendor.
2 Operating the Tape Drive This section includes information about the following: ■ ■ ■ Reading the tape drive’s LEDs Setting the write-protect switch on the data cartridge Loading and unloading a data cartridge Figure 9 shows the controls and indicators on the front panel of the EXB-8500c. (The front panel of the EXB-8500 is the same except that it has no “c” on the unload button.) Figure 9 Unload button and LEDs Reading the LEDs The tape drive uses two LEDs to indicate its operating states.
Table 2 shows specific combinations of LEDs that may occur during tape drive operation. You may occasionally observe LED combinations and sequences not described in Table 2. These other combinations represent special or unusual conditions that are beyond the scope of this table. (For example, a fairly complex LED sequence occurs when you load new microcode from tape.
Selecting Data Cartridges By selecting high-quality data cartridges and storing them properly, you can expect a long shelf-life and optimal data integrity from them. High quality tapes also help maintain tape drive reliability by minimizing wear on the recording heads. Choosing High-Quality Data Cartridges Available from Exabyte, EXATAPE™ 8mm Data Cartridges are formulated specifically for use in Exabyte products.
Setting the Write-Protect Switch EXATAPE™ 8mm data cartridges are equipped with a write-protect switch, shown in Figure 10, to prevent data on the tape from being unintentionally overwritten. Before loading a data cartridge in the tape drive, ensure that the write-protect switch is set correctly for the desired operation.
Loading a Data Cartridge To load a data cartridge into the tape drive, follow these steps: 1. Ensure that the write-protect switch has been set correctly for the desired operation, as explained on page 26. 2. If you have just powered on the tape drive, be sure that the green LED is off, indicating that the tape drive has passed its power-on self-test and is ready to load the data cartridge. 3. If necessary, press the unload button to open the door on the tape drive. 4.
wait a few seconds and press the button again to eject the tape. To unload a data cartridge, press the unload button on the tape drive’s front panel. The tape drive completes the current operation, writes any buffered data to tape, unloads the tape from the tape path, and ejects the cartridge. Note: Some tape drives are configured to eject the tape immediately when the unload button is pressed. Refer to the EXB-8500 and EXB-8500c Product Specification if you have a tape drive configured in this way.
3 Preventive Maintenance The only routine maintenance required by the tape drive is regular cleaning of the tape drive heads and tape path. Use only an Exabyte or Exabyte-approved 8mm Cleaning Cartridge. Proper storage and maintenance of your data cartridges will maximize the shelf life of your tapes and assure data integrity.
Using the 8mm Cleaning Cartridge CAUTION To prevent contamination of the tape drive and damage to the heads, do not use the cleaning cartridge for more than the number of cleaning cycles specified on the cartridge label. Reusing the material in the cleaning cartridge will redistribute contaminants previously removed from the tape path. Discard the cleaning cartridge after you have used it for the specified number of cleaning cycles. To use the cleaning cartridge, follow these steps: 1.
3. Insert the cleaning cartridge in the tape drive and close the door. 4. The cleaning cycle is performed automatically by the tape drive and takes approximately 38 seconds. When the cleaning cycle is complete, the cleaning cartridge is automatically unloaded and ejected from the tape drive. Important If there are no more cleaning cycles remaining for the cleaning cartridge, the tape drive ejects it without completing the cleaning cycle.
■ Keep the storage location as free of airborne particulates as possible. To eliminate obvious sources of particulates, do not permit anyone to smoke, eat, or drink near the storage area, and do not store cartridges near a copier or printer that may emit toner and paper dust. ■ Store data cartridges as soon as possible after you have written data to them.
Replacing Data Cartridges Approximately once each year, you may want to run each tape through a full pass and check its error statistics. If errors have increased significantly since the previous test or if they exceed a certain predetermined threshold, you should re-archive the data to a new tape and discard the old tape.
Notes: 34 EXB-8500/EXB-8500c 306261
4 Packing the Tape Drive You can ship the tape drive with either one drive per carton (single-pack) or with four drives per carton (four-pack). Figure 13 on page 34 shows the single-pack carton and packing materials. CAUTION To avoid damaging the tape drive and voiding your warranty, be sure to use the original shipping materials (or replacement materials obtained from Exabyte) when repacking and shipping the tape drive.
Packing the Tape Drive for Shipment To pack the tape drive for shipment, follow these steps: 36 1. Obtain the original shipping carton or contact your vendor to receive a new one. 2. Assemble the carton and tape it shut at the bottom with two-inch (51 mm) packing tape. 3. Place each tape drive in an antistatic bag. Tape the bag shut. 4. Place the bottom packing cushion in the carton, with the fitted area for the tape drive or tape drives facing up. 5. Single-pack shipping carton (Figure 13): a.
Figure 13 6. Single-pack carton and packing materials Four-pack shipping carton: CAUTION Do not use the four-pack shipping carton for fewer than four tape drives. If you are shipping one, two, or three tape drives, use a single-pack carton for each tape drive. 7. December 1993 a. Place four tape drives in the bottom packing cushion’s slots. You can place the tape drives in the packing cushion so that either the front or rear panel faces up. b. Place the top packing cushion over the tape drives.
Environmental Requirements for Shipment When shipping a tape drive, be sure to comply with the environmental specifications shown in Table 4. Table 4 Environmental specifications for shipping the tape drive Temp. Range –40° C to +60° C (–40° F to +140° F) Temp. Variation 1° C per minute up to a maximum of 20° C per hour (2° F per minute up to a maximum of 36° F per hour) Rel. Humidity 10% to 90% non-condensing Wet Bulb 26° C max (79° F max) Altitude –304.
Appendix A Installation Requirements This appendix provides specific installation requirements for the tape drive. It also provides guidelines for the following tasks: ■ ■ ■ ■ Selecting the correct SCSI cable and connector (pages 37 and 38) Attaching the tape drive to a frame (page 38) Providing chassis grounding (page 40) Connecting the tape drive to the power supply (page 40) If you have already installed the tape drive in a PC, you can skip this appendix.
Note: To minimize discontinuities and signal reflections, ensure that cables used on the same bus have the same impedances. Cable Length Requirements for Differential Configurations For differential SCSI configurations, ensure that the sum of all the SCSI cable lengths does not exceed 25.0 meters (82.02 feet). A stub length of no more than 0.2 meters (8 inches) is allowed off the mainline interconnection within any connected equipment. The stub length within the tape drive is less than 50 mm (1.97 inches).
EXB-8500c Product Specification for detailed information about the spacing of these mounting holes. When mounting the tape drive, follow these guidelines: ■ The mounting location must meet the environmental requirements discussed in the EXB-8500 and EXB-8500c Product Specification. These requirements specify limits for operating temperature, humidity, airflow, particulate contamination, shock, and vibration. ■ The tape drive must be mounted solidly and securely.
Figure 14 Mounting holes on the sides of the tape drive Figure 15 Mounting holes on the bottom of the tape drive Chassis Grounding (optional) If additional chassis grounding is desired, connect a 1⁄4-inch female spade connector to the ground tab at the rear of the tape drive. Or, connect an M3-0.5 6 mm self-tapping screw to the grounding hole. The ground tab and grounding hole are shown in Figure 8 on page 19.
Note: The power supply returns are connected to the chassis, so you cannot isolate logic common ground from chassis ground. Power Cable Connector The tape drive operates from standard +5 VDC and +12 VDC supply voltages; it cannot use external AC power. Safety agency certification requires that the supplied voltage be from a Safety Extra-Low Voltage source (per IEC 950). Refer to Appendix B for tape drive power specifications.
Notes: 44 EXB-8500/EXB-8500c 306261
Appendix B Tape Drive Specifications General Front panel Unload button, LED indicators for SCSI activity, tape motion,and errors Back panel SCSI cable connector, power connector, jumper block and DIP switch for SCSI ID, SCSI terminator R-packs (single-ended configuration) Interface SCSI-1 and SCSI-2, single-ended or differential Physical Characteristics Form factor 5.25-inch full-high Size 82.5 mm (3.25 inches) high 146.0 mm (5.75 inches) wide 203.2 mm (8.00 inches) deep Weight 1.2 kilograms (2.
Notes: 46 EXB-8500/EXB-8500c 306261
M Index maintenance see preventative maintenance mounting requirements 38 – 39 A agency standards 3 O C operating the tape drive 23 – 24, 27 – 28 cable requirements power cable 40 SCSI cable 37 – 38 cartridges see data cartridges chassis grounding 19, 40 cleaning the tape drive frequency 29 instructions 30 – 31 condensation 10 P packing the tape drive 33 – 35 power cable requirements 40 power supply connecting tape drive to 20, 40 preventive maintenance 29 – 31 R D data cartridges care of 31 – 32
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