CDU-720/722 Manual CMD Technical Support CDU-720/722 CMD's Synchronous/Asynchronous Unibus to SCSI Host Adapter CDU-720/722 Features and Specifications The CDU-720 is an intelligent quad-wide Unibus syncronous/asyncronous SCSI host adapter which is fully compatible with the DEC Mass Storage Control Protocol (MSCP) and the DEC Tape Mass Storage Control Protocol (TMSCP). This chapter details its features, special features, and specifications. Features The CDU-720 can be used with the PDP11/84, PDP-11/70, PDP-11/44, PDP-11/34, PDP-11/24, VAX 11/730, VAX 11/750, VAX 11/780, VAX 8250, VAX 8350, VAX 8550, VAX 8600, VAX 8800 and other DEC computers with a Unibus. It supports RSX, RSTS, VMS, UNIX, ULTRIX, DSM-11, and other operating systems which use the DU/TU drivers. The CDU-720 supports virtual(infinite)data buffer, command queuing, standard SCSI bus arbitration, disconnect and reconnect, and SCSI common command set CCS). Up to seven single-ended SCSI target devices (magnetic disk and tape) can be connected to CDU-720 with SCSI bus data transfer rate up to 4.8- MB/sec in syncronous mode and 3-MB/sec in asyncronous mode. The CDU-720 supports a variety of SCSI devices including magnetic disk, magnetic tape and optical disk drives.. CDU-720/M, supports disk drives only CDU-720/T, supports tape drives only CDU-720/TM, supports disk and tape drives simultaneously CDU-720/TMJ, supports disk and tape drives and jukeboxes simultaneously CDU-720/TMP, supports disk and tape drives and pass-through mode CDU-720 Series Single-ended only SCSI interface CDU-722 Series Single-ended or Differential SCSI interface Specifications Table 2-4 lists the controller specifications for the CDU-720. Controller Specifications Emulation, MSCP (DU driver) / TMSCP (TU driver Bus Interface, Standard Unibus Interrupt Vector, Software programmable Command Queuing Commands with optimized seek Data Buffer Capacity Virtual data buffer (infinite size) Bootstrap Auto bootstrap or utility bootstrap Defect Management Dynamic defect management Software Supported, All standard DEC operating systems Multiple-Hosting Support multiple-hosting for disks,, optical drives and tapes. Formatting, On board format and bad block replacement (ISO standard for optical erasable disk format) Partitioning, 2 or 4 equally divided partitions for disk drives Shadowing, Any two disk drives of equal size on the bus can form a shadow set (for /TMS version only) Optional Software, Tape Monitor Utility (TMU) SCSIformat ON-LINE (FMT) SCSI Library Manager (SLM for /TMJ only) Generic SCSI Adapter (GSA for /TMP only) LED Indicators Self test,, error conditions Peripheral Interface, Small Computer System Interface (SCSI) SCSI Transfer Rate:, 4.8-MB/sec in Synchronous mode 3.0-MB/sec in Asynchronous mode SCSI Bus Parity, Odd parity Devices Supported Up to 7 SCSI devices CDU-720/M 7 disk drives CDU-720/T 7 tape drives CDU-720/TM disk and tape drives (default = 4 disks/ 3 tapes) System Performance, Support disconnect/reconnect capability and multiple-host configuration SCSI Driver/Receiver, CDU-720_Single-ended CDU-722_Single-ended or differential SCSI Cable Length, Single-ended,, up to 20-feet (6-meters) Differential,, up to 80-feet (25-meters) Operating Temperature 5 C to 50 C Relative Humidity, 10% to 90% ,, Non-condensing Power Requirement, 5V DC,, 2.8 A NOTEUnless otherwise specified, the CDU-720 will represent all other variations and the CDU-720/TM will represent the CDU-720/TMJ, CDU-720/TMP throughout this manual. The CDU-720/M and CDU-720/TM has an on-board utility for you to configure and format drives, scan bad blocks and replace them automatically. The CDU-720/M and CDU-720/TM contains a selectable bootstrap option which can boot up the system on power up or reset. The CDU-720/T and CDU-720/TM have an On-Board Utility for you to boot up the system or exercise the tape drives. The Logical Unit Number (LUN) is stored in an onboard non-volatile RAM (NOVRAM). The CDU-720 SCSI host adapter provides you with a 10 pin connector (J4) for the On-Board RS-232 Utility. The CDU-722 consists of CDU-720 and on-board differential SCSI drivers and receivers. You can select either single-ended mode, J1 or differential mode, J2. Selecting CSR Address Before you install the UNIBUS SCSI host adapter under the VMS operating system you must select the Control and Status Register (CSR) address VMS expects for the QBUS CONTROLLER. If /T(tape only), then the appropiate tape csr is required. If /M(disk only), then the appropiate disk csr must be selected. If the dual function /TM controller is enabled so that both disk and tape are supported, two CSR addresses are required, one for disk and the other for tape. If /TM is being used as a tape only or disk only, then select the single appropiate CSR. CSR Address selection QUICK HITS RS232 CABLE CONNECTION ON-LINE FORMAT OR TAPE MONITOR UTILITY DUALHOSTING FOR SCSI CLUSTERING QUICK SWITCH SETTINGS DEVICE COMPATABILITY LIST ON-BOARD TEST UTILITY [A] CDU-720 SINGLE ENDED HOST ADAPTER RN9,RN10,RN14=720E221331 RS-232 SCSI connector *------------------------------------------------------------------------------* | W2 | J4 || J3 SINGLE-ENDED | o-o W3 | | o-o |1_____|1__________________________||| |||| | | 1_____RN9 1_____RN10 | | o o-o W20 | | o o-o W21 | | o o-o W22 1_____RN14 | | | | | | __________ | | | /\ | | | | | | | | | | | | SCSI | | | | CHIP | | | ---------- | | | | w4 | | o-o o | | | | w5 | | o o-o W6 ooooooo | | ||| | | ooooooo | | _U71_____________ | | w7 | | | | o o-o | MICROPROCESSOR | | | | | _U72________ _U73________ | | 1_________________ |FIRMWARE | |FIRMWARE || | w8 | EVEN | | ODD || | o o-o 1____________ 1____________ | | w9 | | o o-o | | | | w w w w w W | | 1 1 1 1 1 1 | | 1 2 3 4 5 6 | | o o o o o o | | | | o o o o o o | | | | | | | | | | > o o o o o o | | | | _U102_______ | | | CSR PAL | | | 1------------ | | | | | | _ _ _ | |||||||||||||| __| ||||||||||||||||||_|||||||||||||||||| __| ||||||||||||||||||| ||||||||||||||| ||||||||||||||||||| |||||||||||||||||| ||||||||||||||||||| ||||||||||||||| ||||||||||||||||||| |||||||||||||||||| ||||||||||||||||||| *-------------+ +-----------------+ +----------------+ +-----------------* [B] CDU-722 SINGLE-ENDED/DIFFERENTIAL HOST ADAPTER 1 = pin one RN1,RN2,RN6,RN7=330 OHM 10 pin SIP RN9,RN10,RN14=220/330 OHM 10 pin SIP RN3,RN4,RN6,RN8=150 OHM 10 pin SIP SCSI connector RS-232 SCSI connector *------------------------------------------------------------------------------* | W2 | J2 DIFFERENTIAL || J4 || J3 SINGLE-ENDED | o-o W3 | | o-o 1__________________________||1_____|1__________________________||| |||| | | 1_____RN1 1_____RN4 1_____RN6 1_____RN9 1_____RN10 | | 1_____RN2 1_____RN5 1_____RN7 o o-o W20 | | 1_____RN3 1_____RN8 o o-o W21 | | o o-o W22 1_____RN14 | | | | ___ ___ ___ ___ ___ ___ | | |U6 ||U7 ||U8 ||U9 ||U10||U11| __________ | | --- --- --- --- --- --- | /\ | | | --- --- --- --- --- --- | | | | |U16||U17||U18||U19||U20||U21| | | | | --- --- --- --- --- --- | SCSI | | | --- --- --- --- --- --- | CHIP | | | |U26||U27||U28||U29||U30||U31| ---------- | | --- --- --- --- --- --- | | w4 | | o-o o | | | | w5 | | o o-o W6 ooooooo | | ||| | | ooooooo | | _U71_____________ | | w7 | | | | o o-o | MICROPROCESSOR | | | | | _U72________ _U73________ | | 1_________________ |FIRMWARE | |FIRMWARE || | w8 | EVEN | | ODD || | o o-o 1____________ 1____________ | | w9 | | o o-o | | | | w w w w w W | | 1 1 1 1 1 1 | | 1 2 3 4 5 6 | | o o o o o o | | | | o o o o o o | | | | | | | | | | > o o o o o o | | | | _U102_______ | | | CSR PAL | | | 1------------ | | | | | | _ _ _ | |||||||||||||| __| ||||||||||||||||||_|||||||||||||||||| __| ||||||||||||||||||| ||||||||||||||| ||||||||||||||||||| |||||||||||||||||| ||||||||||||||||||| ||||||||||||||| ||||||||||||||||||| |||||||||||||||||| ||||||||||||||||||| *-------------+ +-----------------+ +----------------+ +-----------------* Jumper Settings This appendix lists the jumper settings and CSR addresses for the CDU-720. Pin Assignments Host Adapter ID Selections W6-1, W6-2, W6-3, Initiator ID IN, IN, IN, Host adapter ID = 7,, highest priority (F) IN, IN, OUT, Host adapter ID = 6 IN, OUT, IN, Host adapter ID = 5 IN, OUT, OUT, Host adapter ID = 4 OUT, IN, IN, Host adapter ID = 3 OUT, IN, OUT, Host adapter ID = 2 OUT, OUT, I IN, Host adapter ID = 1 OUT, OUT, OUT, Host adapter ID = 0,, lowest priority Note (F) means factory setting. CDU-720/722 Jumper Settings W1, Reserved (F) W2, IN, Differential SCSI terminator power enabled (F) W2, OUT, Differential SCSI terminator power disabled W3, IN, Single-ended SCSI terminator power enabled (F) W3, OUT, Single-ended SCSI terminator power disabled W4, 1-2 IN, Reserved (F) W5, 1-2 IN, Auto-Boot disabled for CDU-720/M,, /TM (F) Reserved for CDU-720/T (F) W5, 2-3 IN, Auto-Boot enabled for CDU-720/M,, /TM W6-4, IN, Enable tape fast search option W6-4, OUT, Normal operation (F) W6-5, IN, Tape Monitor Utility enabled (/T,, /TM) Disk SCSIformat ON-LINE enabled (/M,, /TM) W6-5, OUT, Tape Monitor Utility disabled (F) Disk SCSIformat ON-LINE disabled (F) W6-6, IN, Tape sync. mode disabled W6-6, OUT, Tape sync. mode enable d (F) W6-7, IN, Disk sync. mode disabled W6-7, OUT, Disk sync. mode enabled (F) W7, 1-2 IN, 4 ms DMA dwell time for CDU-720/M (F) W7, 2-3 IN, 2 ms DMA dwell time for CDU-720/T,, /TM (F) W9, W8, 2-3 IN, 2-3 IN, 1 Word per DMA burst CDU-720/T,, /TM (F) 2-3 IN, 1-2 IN, 2 Word per DMA burst 1-2 IN, 1-2 IN, 4 Word per DMA burst CDU-720/M (F) W10, 1-2 IN, Bootstrap address = 773000-CDU-720/M,, /TM W10, 2-3 IN, Bootstrap address = 771000-CDU-720/M,, /TM (F) W17 W18,, W19, , Reserved (F) W20 W21 W22 1-2 1-2 1-2 Differential channel enabled; differential SCSI multiple-host protection circuit enabled (F) W20 W21 W22 2-3 2-3 2-3 Single-ended channel enabled; single-ended SCSI multiple-host protection circuit enabled Note (F) means factory setting. CSR Address Selections Table C-3 lists the 29 disk CSR addresses supported by the CDU-720/M with the IC P72009A in U102. C-3 CDU-720/M CSR Addresses (IC P72009A in U102) Address PDP-11, W11, W12, W13, W14, W15 1, 17772150, 1-2 IN, 1-2 IN, 1-2 IN, 1-2 IN, 1-2 IN 2, 17760334, 1-2 IN, 1-2 IN, 2-3 IN, 1-2 IN, 1-2 IN 3, 17760354, 1-2 IN, 2-3 IN, 1-2 IN, 1-2 IN, 1-2 IN 4, 17760374, 1-2 IN, 2-3 IN, 2-3 IN, 1-2 IN, 1-2 IN 5, 17760340, 2-3 IN, 1-2 IN, 1-2 IN, 1-2 IN, 1-2 IN 6, 17760344, 2-3 IN, 1-2 IN, 2-3 IN, 1-2 IN, 1-2 IN 7, 17760350, 2-3 IN, 2-3 IN, 1-2 IN, 1-2 IN, 1-2 IN 8, 17760360, 2-3 IN, 2-3 IN, 2-3 IN, 1-2 IN, 1-2 IN 9, 17760364, 1-2 IN, 1-2 IN, 1-2 IN, 2-3 IN, 1-2 IN 10, 17760370, 1-2 IN, 1-2 IN, 2-3 IN, 2-3 IN, 1-2 IN 11, 17760400, 1-2 IN, 2-3 IN, 1-2 IN, 2-3 IN, 1-2 IN 12, 17760404, 1-2 IN, 2-3 IN, 2-3 IN, 2-3 IN, 1-2 IN 13, 17760410, 2-3 IN, 1-2 IN, 1-2 IN, 2-3 IN, 1-2 IN 14, 17760414, 2-3 IN, 1-2 IN, 2-3 IN, 2-3 IN, 1-2 IN 15, 17760420, 2-3 IN, 2-3 IN, 1-2 IN, 2-3 IN, 1-2 IN 16, 17760424, 2-3 IN, 2-3 IN, 2-3 IN, 2-3 IN, 1-2 IN 17, 17760430, 1-2 IN, 1-2 IN, 1-2 IN, 1-2 IN, 2-3 IN 18, 17760434, 1-2 IN, 1-2 IN, 2-3 IN, 1-2 IN, 2-3 IN 19, 17760440, 1-2 IN, 2-3 IN, 1-2 IN, 1-2 IN, 2-3 IN 20, 17760444, 1-2 IN, 2-3 IN, 2-3 IN, 1-2 IN, 2-3 IN 21, 17760450, 2-3 IN, 1-2 IN, 1-2 IN, 1-2 IN, 2-3 IN 22, 17760454, 2-3 IN, 1-2 IN, 2-3 IN, 1-2 IN, 2-3 IN 23, 17760460, 2-3 IN, 2-3 IN, 1-2 IN, 1-2 IN, 2-3 IN 24, 17760464, 2-3 IN, 2-3 IN, 2-3 IN, 1-2 IN, 2-3 IN 25, 17760470, 1-2 IN, 1-2 IN, 1-2 IN, 2-3 IN, 2-3 IN 26, 17760474, 1-2 IN, 1-2 IN, 2-3 IN, 2-3 IN, 2-3 IN 27, 17760500, 1-2 IN, 2-3 IN, 1-2 IN, 2-3 IN, 2-3 IN 28, 17760504, 1-2 IN, 2-3 IN, 2-3 IN, 2-3 IN, 2-3 IN 29, 17760510, 2-3 IN, 1-2 IN, 1-2 IN, 2-3 IN, 2-3 IN Table C-4> lists the 31 tape CSR addresses supported by the CDU-720/T with the IC P720010A in U102. C-4 CDU-720/T CSR Addresses (IC P72010A in U102) Address PDP-11 W12 W13 W14 W15 W16 1, 17774500, 1-2 IN, 1-2 IN, 1-2 IN, 1-2 IN, 1-2 IN 2, 17760404, 1-2 IN, 1-2 IN, 1-2 IN, 1-2 IN, 2-3 IN 3, 17760444, 1-2 IN, 1-2 IN, 1-2 IN, 2-3 IN, 1-2 IN 4, 17760504, 1-2 IN, 1-2 IN, 1-2 IN, 2-3 IN, 2-3 IN 5, 17760544, 1-2 IN, 1-2 IN, 2-3 IN, 1-2 IN, 1-2 IN 6, 17760410, 1-2 IN, 1-2 IN, 2-3 IN, 1-2 IN, 2-3 IN 7, 17760450, 1-2 IN, 1-2 IN, 2-3 IN, 2-3 IN, 1-2 IN 8, 17760454, 1-2 IN, 1-2 IN, 2-3 IN, 2-3 IN, 2-3 IN 9, 17760414, 1-2 IN, 2-3 IN, 1-2 IN, 1-2 IN, 1-2 IN 10, 17760420, 1-2 IN, 2-3 IN, 1-2 IN, 1-2 IN, 2-3 IN 11, 17760460, 1-2 IN, 2-3 IN, 1-2 IN, 2-3 IN, 1-2 IN 12, 17760510, 1-2 IN, 2-3 IN, 1-2 IN, 2-3 IN, 2-3 IN 13, 17760514, 1-2 IN, 2-3 IN, 2-3 IN, 1-2 IN, 1-2 IN 14, 17760520, 1-2 IN, 2-3 IN, 2-3 IN, 1-2 IN, 2-3 IN 15, 17760550, 1-2 IN, 2-3 IN, 2-3 IN, 2-3 IN, 1-2 IN 16, 17760554, 1-2 IN, 2-3 IN, 2-3 IN, 2-3 IN, 2-3 IN 17, 17760560, 2-3 IN, 1-2 IN, 1-2 IN, 1-2 IN, 1-2 IN 18, 17760604, 2-3 IN, 1-2 IN, 1-2 IN, 1-2 IN, 2-3 IN 19, 17760610, 2-3 IN, 1-2 IN, 1-2 IN, 2-3 IN, 1-2 IN 20, 17760614, 2-3 IN, 1-2 IN, 1-2 IN, 2-3 IN, 2-3 IN 21, 17760620, 2-3 IN, 1-2 IN, 2-3 IN, 1-2 IN, 1-2 IN 22, 17760644, 2-3 IN, 1-2 IN, 2-3 IN, 1-2 IN, 2-3 IN 23, 17760650, 2-3 IN, 1-2 IN, 2-3 IN, 2-3 IN, 1-2 IN 24, 17760654, 2-3 IN, 1-2 IN, 2-3 IN, 2-3 IN, 2-3 IN 25, 17760660, 2-3 IN, 2-3 IN, 1-2 IN, 1-2 IN, 1-2 IN 26, 17760704, 2-3 IN, 2-3 IN, 1-2 IN, 1-2 IN, 2-3 IN 27, 17760710, 2-3 IN, 2-3 IN, 1-2 IN, 2-3 IN, 1-2 IN 28, 17760714, 2-3 IN, 2-3 IN, 1-2 IN, 2-3 IN, 2-3 IN 29, 17760744, 2-3 IN, 2-3 IN, 2-3 IN, 1-2 IN, 1-2 IN 30, 17760750, 2-3 IN, 2-3 IN, 2-3 IN, 1-2 IN, 2-3 IN 31, 17760754, 2-3 IN, 2-3 IN, 2-3 IN, 2-3 IN, 1-2 IN Table C-6 list the eight disk and tape CSR addresses supported by the CDU-720/TM with the IC P720008A in U102. C-6 CDU-720/TM Disk CSR Addresses (IC P72008A in U102) Address PDP-11 W11 W12 W13 1, 17772150 (F), 1-2 IN, 1-2 IN, 1-2 IN 2, 17760334, 1-2 IN, 1-2 IN, 2-3 IN 3, 17760354, 1-2 IN, 2-3 IN, 1-2 IN 4, 17760374, 1-2 IN, 2-3 IN, 2-3 IN 5, 17760340, 2-3 IN, 1-2 IN, 1-2 IN 6, 17760344, 2-3 IN, 1-2 IN, 2-3 IN 7, 17760350, 2-3 IN, 2-3 IN, 1-2 IN 8, Disable Disk, 2-3 IN, 2-3 IN, 2-3 IN CDU-720/TM Tape CSR Addresses (IC P72008A in U102) Address PDP-11 W14 W15 W16 1, 17774500 (F), 1-2 IN, 1-2 IN, 1-2 IN 2, 17760404, 1-2 IN, 1-2 IN, 2-3 IN 3, 17760444, 1-2 IN, 2-3 IN, 1-2 IN 4, 17760504, 1-2 IN, 2-3 IN, 2-3 IN 5, 17760544, 2-3 IN, 1-2 IN, 1-2 IN 6, 17760410, 2-3 IN, 1-2 IN, 2-3 IN 7, 17760450, 2-3 IN, 2-3 IN, 1-2 IN 8, Disable Tape, 2-3 IN, 2-3 IN, 2-3 IN Installation This section gives you instructions for installing the CDU-720 into a system. Remember to turn off the power of the system and SCSI devices while installing the SCSI cable and terminator. SCSI Host Adapter ID Selection Each device on the SCSI bus requires a unique SCSI identification address (0-7). SCSI ID 7 has the highest priority on the bus and SCSI ID 0 has the lowest priority. The CDU-720 SCSI Host Adapter is factory configured to SCSI ID 7. Do not change this setting unless Dual Hosting Each SCSI device (initiator or target) on the SCSI bus requires a unique SCSI ID number. Since the CDU-720 has been set to SCSI ID 7 (initiator), target devices must be configured from SCSI ID 0 to 6. Model, Device Support, Target SCSI ID CDU-720/M, up to 7 disk drives, SCSI ID = 0 to 6 CDU-720/T , up to 7 tape drives, SCSI ID = 0 to 6 CDU-720/TM, up to 7 disk/tape drives combined SCSI ID=0 to 3 disks(F) 4 disk drives J2, pin 25 and 26), through a fus Terminator Power Option W2, IN, Differential SCSI terminator power enabled (F) W2 , OUT, Differential SCSI terminator power disabled W3 , IN, Single-ended SCSI terminator power enabled (F) W3 , OUT, Single-ended SCSI terminator power disabled Note that (F) means factory setting. LED Indicators The CDU-720 has three LED modules and the CDU-722 has four LED modules in the front of the board. DS1, Green, right , Differential SCSI mode selected. DS2, Green, third left, Single-ended SCSI mode selected. DS3, Red, second left, Error condition occurred. DS4, Green, first left, Power-up OK and activity indicator. Upon power up this LED is turned on when the CDU-720 succeeds in the self-diagnostic testing. During normal controller operation this LED is blinking to show controller activity. The CMD CDU-720 controller provides special features, such as multi-hosting, partitioning, hardware shadowing, Tape Monitor Utility (TMU), on-line formatting (FMT), SCSI Library Manager (SLM) and Generic SCSI Adapter (GSA). Special Feature Support List Model, Multi- Partitioning TMU FMT Shadowing SLM GSA # hosting /T, Yes, No, Yes, No, No, No, No /M, Yes, Yes, No, Yes, No, No, No /TM, Yes, Yes, Yes, Yes, No, No, No /TMJ, Yes, Yes, Yes, Yes, No, Yes, No /TMP, Yes, No, Yes, No, No, No, Yes Multi-Hosting CMD's multi-host solution can support disk, tape, and optical devices including jukeboxes. It gives you the ability to completely share an array of disks and tapes between multiple VAX systems running VAX cluster software. Partitioning CDU-720 gives you the ability to partition devices. Partitioning makes one physical device appear as two or four equal sized logical devices. Partitioning is used for operating systems that do not support large devices such as RT-11. Tape Monitor Utility The Tape Monitor Utility (TMU) is an application software that works exclusively with CMD SCSI host adapters as an optional feature for VAX/VMS systems. This Tape Monitor Utility displays the tape drive vendor identification, drive firmware revision, the remaining tape capacity, percentage/number of rewrites during writes or percentage/number of ECC retrys during reads (see manufacturer's documentation for returns whether percentages or numbers), and current tape operations such as read, write, write file mark, space, rewind, etc. You can install multiple CDU-720's and tape drives in one site and observe all tape activity from any VAX terminal locally or across the network without any additional add-in hardware. You can also open a file to log all the information during unattended backup. To install the Tape Monitor Utility, follow the instructions given in the accompanying CMD Tape Monitor Utility User's Manual part number MAN-000TMU-000 and install jumper shunt SCSIformat ON-LINE The SCSIformat ON-LINE (FMT) is an application software that works exclusively with CMD SCSI host adapters as an optional feature for VAX/VMS systems. This SCSIformat ON-LINE allows you to format the disk drives without interfering with the other devices on the SCSI bus. To install SCSIformat ON-LINE follow the instructions given in the accompanying SCSIformat ON-LINE User's Manual and install jumper shunt Hardware Shadowing The Super Shadow CDU-720/TMS is a hardware variation of the CDU-720/TM. Installation and setup of CMD shadowing host adapters are simplified with the CMD On-Board Utilities. This easy to use menu- driven utility allows you to quickly configure virtually any combination of disk shadow sets. The hardware disk shadowing on DEC computers enables simultaneous writing of data to two shadow set members. This provides an exact real-time duplicate data set that can be later retrieved by the user if data on primary disk becomes unaccessible. The access performance benefits are derived from the ability to read data from a particular disk in the shadow set that responds faster. By adapting specific host adapter resident firmware algorithms, CDU- 720/TMS provides incredible performance benefits with disk access time reduced 100% or more during reads. The hardware-based shadowing technique also results in far less VMS overhead and much higher data availability than software solutions. You can now configure complete SCSI drive failure tolerant subsystems built around Super Shadow host adapters. When used in conjunction with other CMD exclusive features like Multi-Host capability, subsystem data availability can be increased substantially. SCSI Library Manager The SCSI Library Manager (SLM) is an optional application software that works exclusively with CMD SCSI host adapter CDU-720/TMJ for VAX/VMS systems. This SCSI Library Manager was designed to work with multiple jukeboxes as well as a single jukebox with from one to five erasable optical or WORM drives installed. With just a few menu-driven keystrokes SLM controls all basic operations like inserting, removing and flipping erasable or WORM cartridges from the drive unit. In addition to giving you complete control of jukebox functions, SLM also has a build-in callable user interface allowing you to customize SLM to your needs. This is especially useful for applications to support file management. Generic SCSI Adapter The Generic SCSI Adapter (GSA) is an application software that works exclusively with CMD SCSI host adapter CDU-720/TMP for VAX/VMS systems. This Generic SCSI Adapter allows you to send the generic SCSI commands to the disk or tape drives through the standard DEC DU driver. The GSA itself is a simple and straightforward callable user interface providing an easier way for you to communicate with the device directly. Setup This chapter will assist you in setting up the CDU-720 and your system for use. On-Board Utility The CDU-720 SCSI host adapter comes with a general purpose On-Board Utility for all systems. The On-Board Utility can test the system slot, SCSI cable, and SCSI devices connected to the CDU-720. Accessing the Utility can be done through PDP system or the RS-232 Port. Be sure to complete utility functions, explained at the end of this chapter. Accessing the Utility Through the PDP System The On-Board Utility Program can be accessed by means of an ODT command for PDP systems. Accessing the Utility from the PDP system insures that the host recognizes the CDU-720/722. PDP-11/34 Systems Follow these instructions for using the Disk Utility with PDP-11/34 Systems Enter ODT mode. >From the terminal, enter the following commands and press [ENTER] after each command: LYYYYYY D 123456 LYYYYYY D 100 Where YYYYYY = the last six digits of the CSR address plus 2 Enter the following commands and press [ENTER] after each command; the Utility program will the begin. L5000 S @NOTE = EXAMPLE For steps 2 and 3 with CSR address 17772150, enter: L772152 [ENTER] D123456 [ENTER] L772152 [ENTER] D100 [ENTER] L5000 S Accessing the Utility Through the RS-232 Port Connect a terminal to the CDU-720's RS-232 port (10 pin connector). Set the terminal baud rate to 9600 (8-bit data, 1-stop bit, no parity) jump scroll. Halt the system's CPU, reset the system, and hit carriage return on the terminal. The SCSI Host Adapter Utility will display as follows. SCSI HOST ADAPTER UTILITY (REV. YYYxZZ) X=UTILITY EXIT [DISK] [TAPE] 1 = LOGICAL UNIT NUMBER OFFSET 6 = LOGICAL UNIT NUMBER OET 2 = FORMAT DRIVE 7 = ADDITIONAL UTILITIES 3 = QUALIFY DRIVE 4 = MANUALLY REPLACE BAD BLOCKS 5 = ADDITIONAL UTILITIES SELECT OPTION? Once the SCSI Host Adapter Utility shows up, you can key in the number to select the desired option. Press [CTRL] + C at any time to return to the main menu. The above information can be changed without notice. Rev. Date: A = 04-15-96 Goto to: CMD's Digital Equipment Product page or Top of this Page