AM-647, 648 & 649 Digital Audio Tape (DAT) High Capacity Tape Drives
FIRST EDITION: August 1997 To re-order this document, request part number PDI-00649-00 FCC Notice This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Table of Contents INTRODUCTION PRODUCT DESCRIPTIONS Common Characteristics SCSI Bus Terminology AM-647 (Archive) DAT Drive Characteristics AM-648 (Exabyte) DAT Drive Characteristics AM-649 (HP) DAT Drive Characteristics Drive Mounting Kits TOOLS REQUIRED PREPARING THE DAT DRIVE FOR INSTALLATION Jumpers and Switch Settings SCSI BUS TERMINATION Termination Resistor Pack Locations External SCSI Bus Termination Internal SCSI Bus Termination Termination Power DAT INSTALLATION—EAGLE AND AM-1600 DESKSIDE COMPUTERS
Page ii AM-64x DAT High Capacity Tape Drives List of Figures Figure 1 - AM-647 Configuration—3.5” Wide Model Figure 2 - AM-647 Configuration—5.
AM-64x DAT High Capacity Tape Drives Page 1 INTRODUCTION This document describes the installation of the AM-647, AM-648, and AM-649 Digital Audio Tape (DAT) SCSI High Capacity Tape Drives into an Alpha Micro computer system. If you are installing a DAT drive into an external subsystem, use the installation instructions shipped with the subsystem. If you are installing a DAT drive in a Series 90 computer, installation instructions are included in the Series 90 SCSI tape drive controller documentation.
Page 2 AM-64x DAT High Capacity Tape Drives AM-647 (Archive) DAT Drive Characteristics • Two models: a 3.5” half-height drive, and a 5.25” half-height drive. • Both drives have the same operational characteristics.
AM-64x DAT High Capacity Tape Drives System Type VME Rack Mount VME Pedestal AM-2000M/AM-3000M * AM-1400/AM-1600 Desktop ** AM-990 VME and SBC Eagle Deskside AM-1600 Deskside Page 3 Mounting Kit PDB-00625-60 PDB-00625-61 PDB-00625-61 PDB-00647-50 Not required Not required Not required * With Roadrunner or AM-540 upgrade (AM-649-01 not compatible with AM-540) ** For AM-647 DAT drives only—other models not compatible Make sure you have the correct mounting kit before you begin.
Page 4 AM-64x DAT High Capacity Tape Drives DAT DRIVE MOUNTING HOLES NO JUMPERS INSTALLED AT THIS LOCATION 1 RD2 SW1 JP4 RD1 TERMINATORS SW1 SCSI ID O F F 0 1 2 3 4 5 6 7 8 JP4 "IN" = DRIVE SUPPLIES TERMINATION POWER TO THE SCSI BUS. O F F O F F JP4 "OUT" = DRIVE DOES NOT SUPPLY TERMINATION POWER TO THE SCSI BUS. 1 1 2 3 1 2 3 O F F O F F 2 O F F O F F 3 6 1 2 3 1 2 3 Leave switches 6, 7, and 8 set as shown in the illustration.
AM-64x DAT High Capacity Tape Drives Page 5 O F F 1 2 3 4 5 6 7 8 TERMINATION POWER JUMPER 0UT = TERMINATION POWER DISABLED IN = TERMINATION POWER ENABLED TERMINATORS PIN-1 SW1 SCSI ID O F F 0 1 2 3 4 5 6 7 8 O F F O F F 1 1 2 3 1 2 3 O F F O F F 2 O F F O F F 3 SWIITCH #4 IN THE "OFF" POSITION = SCSI-1 SWITCH #4 IN THE "ON" POSITION = SCSI-2 Figure 2 - AM-647 Configuration—5.25” Wide Model PDI-00649-00, A01 6 1 2 3 1 2 3 Leave switches 6, 7, and 8 set as shown in the illustration.
Page 6 AM-64x DAT High Capacity Tape Drives PIN-1 KEYED CONNECTOR DC POWER SCSI ID #0 SCSI ID #1 SCSI ID #4 SCSI ID #2 SCSI ID #5 SCSI ID #3 SCSI ID #6 The two outside pins (shown in gray) are used to select SCSI-1 or SCSI-2. With the jumper removed, the drive is configured for SCSI-2; with the jumper installed the drive is configured for SCSI-1. For all Alpha Micro configurations, the drive must be configured for SCSI-2 operation.
AM-64x DAT High Capacity Tape Drives Page 7 The AM-649-00 4 gigabyte DAT drive (HP model C1536A) has no provision to disable its term power! Therefore, this drive should only be installed in the main system chassis and connected to the same power supply as the rest of the internal SCSI peripheral devices.
Page 8 AM-64x DAT High Capacity Tape Drives The AM-649-01 may be labeled as either Model C1533A or C1599A. From an AMOS standpoint, these models are identical. AMOS software which returns the model number displays C1533A for either drive. When configuring the AM-649-01 drive, be sure to remove the TERM POWER jumper located next to the SCSI ID jumpers. NC SCSI 0 SCSI 1 SCSI 2 TERM PWR HP 4mm DAT Drive - Model C1533A/C1599A (8 GB) SCSI ADDRESS JUMPERS SCSI I.D.
AM-64x DAT High Capacity Tape Drives Page 9 HP 4mm DAT Option Switches ON 1 2 3 4 5 6 7 8 AMOS Default Configuration SWITCH 1 SWITCH 2 MEANING --------------------------------------------------------------------------------------------------------------On On Off On Off On Off Off Compression enabled at power-on, with host control Compression enabled at power-on, no host control Compression disabled at power-on, the host is allowed to control compression Compression disabled at power-on, no h
Page 10 AM-64x DAT High Capacity Tape Drives Figures 1 and 2 show the location of the AM-647 on-board terminators. Refer to Figure 7 for the location of the AM-648 on-board terminators. AM-648 ON-BOARD TERMINATORS Figure 7 - AM-648 (Exabyte) On-Board Terminators External SCSI Bus Termination The preferred way to terminate the SCSI bus in an AMOS computer is to install an external terminator. In April of 1993, the external SCSI bus terminator became standard on all AMOS computers.
AM-64x DAT High Capacity Tape Drives Page 11 10- and 21-slot rack mount VME computers have no external SCSI connector. To install an external terminator, you need a special adapter cable, DWB-10200-01. The connector on this cable is compatible with the external terminator and also allows you to easily attach a portable CD-ROM drive or other SCSI device.
Page 12 AM-64x DAT High Capacity Tape Drives Figures 8a and 8b show two different types of external SCSI connectors: 1. Figure 8a shows an external narrow SCSI connector and bail locks for holding the terminator in place. This configuration is used on most of Alpha Micro's currently available product. The terminator is installed by plugging it onto the connector, then latching the bail locks into the notches on the sides of terminator. 2. Figure 8b shows an external wide SCSI connector.
AM-64x DAT High Capacity Tape Drives Page 13 • SCSI subsystems attached to the main system should not have any additional devices supplying termination power to the SCSI bus.
Page 14 AM-64x DAT High Capacity Tape Drives Front Bezel Removal and Modification Your DAT drive product installation kit includes instructions describing how to modify your front bezel. The modification requires you to make a half-height 5.25” cutout if you are installing a DAT drive only, or a full-height 5.25” cutout if you are installing a DAT drive along with a new (or existing) floppy or streaming tape drive. 1. Follow the instructions in your computer Owner's Manual for removing the top cover. 2.
AM-64x DAT High Capacity Tape Drives Page 15 METAL SUPPORT BRACKET DWF-20260-00 DRIVE ACTIVITY LED SCSI DAT TAPE DRIVE * DISKETTE DRIVE DRIVE ACTIVITY LEDs PLASTIC MOUNTING BASE DWF-20218-00 * Faceplate varies per DAT model. Figure 9 - Drive Mounting Assembly 2. The DAT drive has several mounting screw-holes on its side rails, which align with corresponding holes in the plastic mounting base.
Page 16 AM-64x DAT High Capacity Tape Drives DWF-20218-00 W E O TH RR S IN E A ' E IV ED TH DR INT BY O D E TH IS P ATE E C L I R E D SU N IN E T PA N K IO MARON CT F IRE D A B A SCSI DAT OR STREAMING TAPE DRIVE, or ANY 5-1/4" HALF-HEIGHT SCSI HARD DISK DRIVE B AM-645 FULL-HEIGHT 8MM MAGNETIC TAPE DRIVE, or ANY 5-1/4" FULL-HEIGHT SCSI HARD DISK DRIVE C ANY 5-1/4" HALF-HEIGHT FLOPPY DISKETTE DRIVE, or ANY 5-1/4" HALF-HEIGHT SCSI HARD DISK DRIVE C Figure 10 - Plastic Mounting Base 6.
AM-64x DAT High Capacity Tape Drives S W E' O IV R HE RR D T A TE IN HE ET ED T K Y IS T B D OIN D E P TE TH IS A E EL DIC R N N SU PA N I E T IO AK N T M RO EC F IR D Page 17 DWF-20260-00 MOUNTING BRACKET DAT TAPE DRIVE MOUNTING HOLE DISKETTE DRIVE MOUNTING HOLES Figure 11 - Metal Top Support Bracket 7. Before you tighten the screw holding the DAT drive to the metal support bracket, make sure you are satisfied with the way the drive assembly is aligned with the cutout in your computer's front bezel.
Page 18 AM-64x DAT High Capacity Tape Drives FRONT BEZEL NYLON SHOULDER WASHERS (HDW-10004-07) METAL SUPPORT BRACKET DWF-20260-00 DAT TAPE DRIVE Figure 12 - Securing the Drive Assembly to the Front Bezel Power and Interface Cables The 50-pin SCSI cable is already installed in your computer. On some computers, the 50-pin SCSI interface cable has keyed connectors that insure a pin-1 to pin-1 connection with the DAT drive.
AM-64x DAT High Capacity Tape Drives Page 19 DAT INSTALLATION—AM-1400 AND AM-1600 DESKTOP COMPUTERS 1. Remove the four Phillips head screws (two on each side) that hold the top cover in place. Remove the top cover and place it in an area where it won't get damaged. 2. Remove the four screws that hold the drive mounting bracket in place. The bracket is shown in Figure 13—the screws are at positions A, B, C, and D. Remove the mounting bracket from the chassis.
Page 20 AM-64x DAT High Capacity Tape Drives AM-648 DAT TAPE DRIVE AC/DC GROUND ISOLATOR DRIVE MOUNTING BRACKET 13-00 DWF-207 PLASTIC HEX SCREW METAL WASHER Figure 14 - AM-1400/1600 Drive Mounting Assembly 5. After the drive is installed on the mounting bracket, place the assembly back into the chassis and re-attach the four screws that hold the mounting bracket in place. 6. There is a SCSI interface cable with two 50-pin connectors already installed in the chassis.
AM-64x DAT High Capacity Tape Drives Page 21 DAT INSTALLATION—AM-990 COMPUTERS The DAT drive is installed in the AM-990's main drive bay using plastic mounting rails. You need two rails to mount the drive. The rails (DWF-20652-00) are universal; they can be mounted on either the right or left side of the drive.
Page 22 AM-64x DAT High Capacity Tape Drives DWF-20652-00 MOUNTING RAIL Figure 16 - Attaching Mounting Rails to Peripheral Once the rails are installed, slide the tape drive into its mounting position in the chassis. Make a pin-1 to pin-1 connection between the SCSI connector on the back of the drive and the interface cable (if attaching the drive to a 68-pin wide SCSI cable, be sure to use the correct adapter); plug in the power cable and the installation is complete.
AM-64x DAT High Capacity Tape Drives Page 23 This does not apply to computers, such as the Eagle 550 and the AM-6000, which use the CMOS configuration menu rather than switch settings to set the boot device. • DAT drives use the same tape utility programs used by Alpha Micro's 1/4" and 1/2" magnetic tape drives: MTUSAV, MTUDIR, and MTURES. The use of these programs is documented in the System Commands Reference Manual.
Page 24 AM-64x DAT High Capacity Tape Drives If you use AMOS 2.2C we recommend you update MTUSAV, MTURES, MTUDIR, and TAPSER to the latest possible versions. Though the new versions are not absolutely necessary to use your DAT drive, they incorporate enhancements, such as improvements in the ability to span tapes. The minimum file versions which include these enhancements are: MTUSAV.LIT 3.3(134) MTURES.LIT 3.3(138) MTUDIR.LIT 3.3(129) TAPSER.LIT 3.0(122) TAPLOG.LIT 1.
AM-64x DAT High Capacity Tape Drives Page 25 Increase the number of jobs allocated by one. The next thing to do is add a new DEVTBL statement. DEVTBL tells AMOS which devices to look for on the computer. Every time you add a new device to the system, like your DAT drive, you must add a DEVTBL statement defining it. Locate the DEVTBL statements in your TEST.
Page 26 AM-64x DAT High Capacity Tape Drives COPY AMOS32.INI=TEST.INI RETURN If the computer doesn't boot successfully, or if the DAT drive does not appear in the DEVTBL display, press the RESET button to reboot your computer under its original initialization file. Review the changes you made to the TEST.INI. Verify that the DAT drive is cabled correctly, and its drive ID jumpers are set properly.
AM-64x DAT High Capacity Tape Drives Page 27 Other than using the current version of WRMGEN.LIT and the minimum required operating files, there are no other special software considerations when creating your warm boot file. The next page gives an example of a typical routine for generating a warm boot monitor. The program prompts are shown in plain text and the user input is in bold type. The total size of your warm boot monitor cannot exceed 200KB.
Page 28 AM-64x DAT High Capacity Tape Drives Creating a Sample WRMGEN File LOG SYS: RETURN WRMGEN RETURN Warm Boot Monitor Generator X.X(XXX) Input monitor: AMOS32.MON RETURN System disk driver: SCZRR.DVR RETURN Number of logical units: 10 RETURN Bitmap size: 3969 RETURN Language definition table name: RETURN ;Pressing RETURN defaults to English SCSI dispatcher (RETURN if none): SIMRR.SYS RETURN ;Simple only! System terminal interface driver: AM318.
AM-64x DAT High Capacity Tape Drives Page 29 EAGLE 100 - 500 COMPUTERS ALTERNATE BOOT DEVICE BOOT ID SWITCH OFF ON 3 4 AM-1600 DESKSIDE COMPUTERS WITH ROADRUNNER UPGRADE ALTERNATE BOOT DEVICE BOOT ID SWITCH OFF ON 1 2 ROADRUNNER ENHANCED AM-145 AND AM-180 BOARDS AM-540 ENHANCED AM-3000M AND AM-190 COMPUTERS ALTERNATE BOOT DEVICE BOOT ID SWITCH OFF ON 1 2 3 4 Figure 17 - DAT Warm Boot—CPU Boot Switch Settings For Eagle 550 and newer systems which use a CMOS boot configuration, the DAT drive must
Page 30 AM-64x DAT High Capacity Tape Drives GREEN AMBER STATUS LEDS TAPE EJECT Figure 18 - AM-647 DAT Drive Faceplate The amber Drive Status LED indicates the following conditions: • When ON (lit), the drive is reading or writing the tape. Never press the tape eject button while the amber LED is on! • When flashing rapidly, a hardware fault occurred or dew was detected. If dew is detected the tape is ejected.
AM-64x DAT High Capacity Tape Drives Page 31 GREEN YELLOW ORANGE STATUS LEDS TAPE EJECT Figure 19 - AM-648 DAT Drive Faceplate • The green LED will always be lit whenever power is turned on. • The orange LED is lit when the DAT drive is processing data or commands. Never press the tape eject button while the orange LED is on! • The yellow LED indicates the DAT drive heads require cleaning. Do not clean the drive until the yellow LED is lit! • When all LEDs are flashing, an error has occurred.
Page 32 AM-64x DAT High Capacity Tape Drives USING YOUR DAT DRIVE The DAT drive is very simple to use: 1. To save data to the tape, the window on the tape cartridge must be in the write enable position. Figure 21 shows the tape window in both "write enable" and "write protected" positions. 2. The 4mm tape inserts as shown in Figure 21.
AM-64x DAT High Capacity Tape Drives DRI Page 33 VE S TAT US LED s TAP E DAT EJE CT B UTT ON WIN DOW SHU T= WR ITE ENA BLE WIN DOW OPE N= WR ITE PRO TEC TED Figure 21 - Loading a DAT Tape Cartridge PDI-00649-00, A01
Page 34 AM-64x DAT High Capacity Tape Drives DAT Drive Compatibility By default, AM-648 and AM-649 DAT drives write data in compressed mode. This compressed data cannot be read by the AM-647 DAT drive. However, by using the TMODE command with standard DDS/DDS-1 tapes, you can force the AM-648 and AM-649 drives to write in standard DDS (noncompressed) mode. Data written in standard DDS mode can be read by AM-647, AM-648 and AM-649 drives.
AM-64x DAT High Capacity Tape Drives Page 35 MAINTENANCE If excessive magnetic dust and debris collects on one or more of the heads, magnetic media may become unreadable and unwriteable. This situation may occur infrequently, or not at all, depending on the media used. Whenever the applicable LED indicates a cleaning is required, you should clean the drive heads with a cleaning cassette. To clean the heads on the DAT drive, use only a qualified DDS DAT cleaning cassette designed for your drive.
Page 36 AM-64x DAT High Capacity Tape Drives DDS, DDS-1, DDS-2, and Media Recognition Over the past few years many improvements have been made to DAT tape drives, allowing newer drive models to use a higher compression scheme and store more data on a single tape. To accommodate the new high compression scheme, the Digital Data Storage (DDS) tape had to be improved. The new tapes are labeled DDS-2 and have a higher density substrate to provide the quality needed for dependable high compression operation.
AM-64x DAT High Capacity Tape Drives Page 37 Tape Capacities With AM-647 DAT drives the 60 and 90 meter tapes yield capacities of approximately 1.3 GB and 2.0 GB respectively. If you attempt to use shorter tapes with the AM-647, the drive is not able to calculate the end of tape position. If the data you are saving exceeds the tape’s capacity, data will be lost! With AM-648 and AM-649-00/-01 DAT drives, 60 and 90 meter tapes written in DDS-DC compressed mode yield capacities of approximately 2.6 GB and 4.
