MYLEX CORPORATION
DAC960SX (DBX960S-3-UDR)
DAC960SX (DBX960S-6-UDR)
DAC960SX (DBX960S-6-FWR)
| Card Type | Hard drive controller card | 
| Processor | RISC | 
| Maximum Onboard Memory | 128MB DRAM (EDO supported) | 
| Hard Drives supported | Up to 30 Ultra SCSI devices | 
| Floppy drives supported | None | 
| Data Bus | Up to two host Single-ended/Differential Wide Ultra-SCSI channels | 
| Form Factor Size | 5.25 inch | 
| RAID levels supported | 0, 1, 0+1, 3, 5, JBOD | 
 
| CONNECTIONS | |||
| Function | Location | Function | Location | 
| LCD panel interface | J1 | Diagnostic port | J6 | 
| Battery back-up | J2 | Edge connector | J7 | 
| Daughterboard connector 1 | J3 | Edge connector | J8 | 
| Daughterboard connector 2 | J4 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Channel 0 termination enabled | J5/pins 1 & 2 | Closed | 
| Channel 0 termination disabled | J5/pins 1 & 2 | Open | |
| » | Channel 1 termination enabled | J5/pins 3 & 4 | Closed | 
| Channel 1 termination disabled | J5/pins 3 & 4 | Open | |
| » | Host channel 0 termination enabled | J5/pins 5 & 6 | Closed | 
| Host channel 0 termination disabled | J5/pins 5 & 6 | Open | |
| » | Factory configured - do not alter | J5/pins 7 & 8 | Open | 
| » | Factory configured - do not alter | J5/pins 9 & 10 | Open | 
| DRAM CONFIGURATION | |
| Size | Bank 0 | 
| 8MB | (2) 1M x 36 | 
| 16MB | (2) 2M x 36 | 
| 32MB | (2) 4M x 36 | 
| 64MB | (2) 8M x 36 | 
| 128MB | (2) 16M x 36 | 
| TERMINATION CONFIGURATION | 
| Notes: When using differential SCSI, external termination must be used and termination on the controller and daughterboard must be disabled. I.e., all termination jumpers (JP1/1-JP1/5) should be opened. (See User Configurable Settings.) If Narrow SCSI (8-bit) is connected to any channel, the controller must be at one end of the bus with termination enabled (J5) on that channel. If dual mode system, terminate SCSI bus externally. | 
| MISCELLANEOUS TECHNICAL NOTES | 
| The DAC960SX controller (which can reside within a DAC9060SXI enclosure) interfaces between the host system and a disk array. The controller is installed with one of several distribution boards: DBX960X-3-UDR, DBX960S-6-FWR and DBX960S-6-UDR. A DBI960SX daughterboard can be installed with the latter two, providing a 3 channel upgrade. A battery backup unit can be installed with all. | 
DBX960SXI (ENCLOSURE)
 
DBX960SXI Front Panel
| CONNECTIONS | |||
| Function | Location | Function | Location | 
| ESC key/return to previous screen | J1 | Alarm key/reset audible alarm | ALARM | 
| Keys defined by Instruction Line (last line of the LCD display menu | J2-J5 | Unidentified | J7 | 
| Enter key/execute selected functions | J6 | ||
| Card Type | Distribution board | 
| Hard Drives supported | Up to 12 UltraSCSI Wide/Narrow devices | 
| Floppy drives supported | None | 
| Data Bus | One host Differential Wide Ultra-SCSI channel | 
 
Distribution Board DBX960S-3-UDR
| CONNECTIONS | |||
| Function | Location | Function | Location | 
| 10-pin serial port - internal | J1 | 50-pin SCSI channel 1 connector - internal | J8 | 
| 68-pin SCSI connector - host channel 0 | J2 | Power connector | J9 | 
| 10-pin connector - dual controller communications port | J3 | 18-pin connector - channel 1 fault indicator | J10 | 
| 68-pin SCSI channel 0 connector - internal | J4 | 18-pin connector - channel 0 fault indicator | J11 | 
| 50-pin SCSI channel 0 connector - internal | J5 | 20-pin connector - AEMI (Array Enclosure Management Interface) | J12 | 
| 68-pin SCSI channel 1 connector - internal | J7 | Power connector | J13 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Factory configured - do not alter | J6/5 | N/A | 
| » | Serial port protocol is SLP1 | J6/6 | Open | 
| Serial port protocol is VT100 | J6/6 | Closed | |
| » | Factory configured - (serial port baud rate is 19.2) | J6/7 | Closed | 
| » | Controller is only controller in system or Controller is primary in two controller system | J6/8 | Closed | 
| Controller is secondary in two controller system | J6/8 | Open | |
| HOST CHANNEL SCSI ID SELECTION | ||||
| SCSI ID | JP6/1 | JP6/2 | JP6/3 | JP6/4 | 
| 0 | Open | Open | Open | Open | 
| 1 | Closed | Open | Open | Open | 
| 2 | Open | Closed | Open | Open | 
| 3 | Closed | Closed | Open | Open | 
| 4 | Open | Open | Closed | Open | 
| 5 | Closed | Open | Closed | Open | 
| 6 | Open | Closed | Closed | Open | 
| 7 | Closed | Closed | Closed | Open | 
| 8 | Open | Open | Open | Closed | 
| 9 | Closed | Open | Open | Closed | 
| 10 | Open | Closed | Open | Closed | 
| 11 | Closed | Closed | Open | Closed | 
| 12 | Open | Open | Closed | Closed | 
| 13 | Closed | Open | Closed | Closed | 
| 14 | Open | Closed | Closed | Closed | 
| 15 | Closed | Closed | Closed | Closed | 
| TERMINATION CONFIGURATION | 
| Note: Differential resistor packs RP1, RP2 and RP3 must be installed to enable Host Channel 0 termination and removed to disable termination. | 
| Card Type | Distribution board | 
| Hard Drives supported | Up to 30 UltraSCSI Wide/Narrow devices | 
| Floppy drives supported | None | 
| Data Bus | Up to two host Ultra-SCSI Wide channels | 
 
Distribution Board DBX960S-6-FWR
| CONNECTIONS | |||
| Function | Location | Function | Location | 
| 68-pin SCSI drive channel 2 connector - internal | J1 | 20-pin connector - AEMI (Array Enclosure Management Interface) | J10 | 
| 68-pin SCSI drive channel 0 connector - internal | J2 | Power connector | J11 | 
| 68-pin SCSI drive channel 3 connector - internal | J3 | 10-pin serial port connector | J12 | 
| 68-pin SCSI drive channel 1 connector - internal | J4 | 18-pin connector - drive channel 1 fault indicator | J13 | 
| 68-pin SCSI host channel 1/drive channel 4 - internal | J5 | 18-pin connector - drive channel 0 fault indicator | J14 | 
| 68-pin SCSI host channel 0 connector - internal | J7 | 18-pin connector - drive channel 2 fault indicator | J15 | 
| Power connector | J8 | 18-pin connector - drive channel 3 fault indicator | J16 | 
| 18-pin connector - drive channel 4 fault indicator | J9 | 10-pin connector - dual controller communications port | J17 | 
| Note: Host channel 1 and drive channels 2 and 3 are only available if daughterboard DBI960SX is installed. | |||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Factory configured - do not alter | J6/5 | N/A | 
| » | Serial port protocol is SLP1 | J6/6 | Open | 
| Serial port protocol is VT100 | J6/6 | Closed | |
| » | Factory configured - (serial port baud rate is 19.2) | J6/7 | Closed | 
| » | Controller is only controller in system or Controller is primary in two controller system | J6/8 | Closed | 
| Controller is secondary in two controller system | J6/8 | Open | |
| HOST CHANNEL 0 SCSI ID SELECTION | ||||
| SCSI ID | JP6/1 | JP6/2 | JP6/3 | JP6/4 | 
| 0 | Open | Open | Open | Open | 
| 1 | Closed | Open | Open | Open | 
| 2 | Open | Closed | Open | Open | 
| 3 | Closed | Closed | Open | Open | 
| 4 | Open | Open | Closed | Open | 
| 5 | Closed | Open | Closed | Open | 
| 6 | Open | Closed | Closed | Open | 
| 7 | Closed | Closed | Closed | Open | 
| 8 | Open | Open | Open | Closed | 
| 9 | Closed | Open | Open | Closed | 
| 10 | Open | Closed | Open | Closed | 
| 11 | Closed | Closed | Open | Closed | 
| 12 | Open | Open | Closed | Closed | 
| 13 | Closed | Open | Closed | Closed | 
| 14 | Open | Closed | Closed | Closed | 
| 15 | Closed | Closed | Closed | Closed | 
| HOST CHANNEL 1 SCSI ID SELECTION | ||||
| SCSI ID | J6/9 | J6/10 | J6/11 | J6/12 | 
| 0 | Open | Open | Open | Open | 
| 1 | Closed | Open | Open | Open | 
| 2 | Open | Closed | Open | Open | 
| 3 | Closed | Closed | Open | Open | 
| 4 | Open | Open | Closed | Open | 
| 5 | Closed | Open | Closed | Open | 
| 6 | Open | Closed | Closed | Open | 
| 7 | Closed | Closed | Closed | Open | 
| 8 | Open | Open | Open | Closed | 
| 9 | Closed | Open | Open | Closed | 
| 10 | Open | Closed | Open | Closed | 
| 11 | Closed | Closed | Open | Closed | 
| 12 | Open | Open | Closed | Closed | 
| 13 | Closed | Open | Closed | Closed | 
| 14 | Open | Closed | Closed | Closed | 
| 15 | Closed | Closed | Closed | Closed | 
| Card Type | Distribution board | 
| Hard Drives supported | Up to 24 UltraSCSI Wide/Narrow devices | 
| Floppy drives supported | None | 
| Data Bus | Up to two Differential Wide Ultra-SCSI channels | 
 
Distribution Board DBX960S-6-UDR
| CONNECTIONS | |||
| Function | Location | Function | Location | 
| 68-pin SCSI drive channel 2 connector - internal | J1 | 68-pin SCSI host channel 0 connector - internal | J7 | 
| 68-pin SCSI drive channel 3 connector - internal | J2 | Power connector | J8 | 
| 68-pin SCSI drive channel 0 connector - internal | J3 | 10-pin serial port connector | J9 | 
| 68-pin SCSI drive channel 1 connector - internal | J4 | 80-pin connector - fault and status port | J10 | 
| 68-pin SCSI host channel 1 connector - internal | J5 | 10-pin connector - reserved for testing | J11 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Factory configured - do not alter | J6/5 | N/A | 
| » | Serial port protocol is SLP1 | J6/6 | Open | 
| Serial port protocol is VT100 | J6/6 | Closed | |
| » | Factory configured - (serial port baud rate is 19.2) | J6/7 | Closed | 
| » | Controller is only controller in system or Controller is primary in two controller system | J6/8 | Closed | 
| Controller is secondary in two controller system | J6/8 | Open | |
| HOST CHANNEL 0 SCSI ID SELECTION | ||||
| SCSI ID | JP6/1 | JP6/2 | JP6/3 | JP6/4 | 
| 0 | Open | Open | Open | Open | 
| 1 | Closed | Open | Open | Open | 
| 2 | Open | Closed | Open | Open | 
| 3 | Closed | Closed | Open | Open | 
| 4 | Open | Open | Closed | Open | 
| 5 | Closed | Open | Closed | Open | 
| 6 | Open | Closed | Closed | Open | 
| 7 | Closed | Closed | Closed | Open | 
| 8 | Open | Open | Open | Closed | 
| 9 | Closed | Open | Open | Closed | 
| 10 | Open | Closed | Open | Closed | 
| 11 | Closed | Closed | Open | Closed | 
| 12 | Open | Open | Closed | Closed | 
| 13 | Closed | Open | Closed | Closed | 
| 14 | Open | Closed | Closed | Closed | 
| 15 | Closed | Closed | Closed | Closed | 
| HOST CHANNEL 1 SCSI ID SELECTION | ||||
| SCSI ID | J6/9 | J6/10 | J6/11 | J6/12 | 
| 0 | Open | Open | Open | Open | 
| 1 | Closed | Open | Open | Open | 
| 2 | Open | Closed | Open | Open | 
| 3 | Closed | Closed | Open | Open | 
| 4 | Open | Open | Closed | Open | 
| 5 | Closed | Open | Closed | Open | 
| 6 | Open | Closed | Closed | Open | 
| 7 | Closed | Closed | Closed | Open | 
| 8 | Open | Open | Open | Closed | 
| 9 | Closed | Open | Open | Closed | 
| 10 | Open | Closed | Open | Closed | 
| 11 | Closed | Closed | Open | Closed | 
| 12 | Open | Open | Closed | Closed | 
| 13 | Closed | Open | Closed | Closed | 
| 14 | Open | Closed | Closed | Closed | 
| 15 | Closed | Closed | Closed | Closed | 
| Card Type | Daughterboard | 
| Hard Drives supported | Up to 18 UltraSCSI Wide/Narrow devices | 
| Floppy drives supported | None | 
| Data Bus | One Single-ended/Differential Wide Ultra-SCSI channel | 
 
DBI960SX Daughterboard
| CONNECTIONS | |||
| Function | Location | Function | Location | 
| Edge connector (drive) | CN1 | DAC960SX controller connector | J2 | 
| Edge connector (drive) | CN2 | DAC960SX controller connector | J3 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Channel 2 termination enabled | JP1/1 | Closed | 
| Channel 2 termination disabled | JP1/1 | Open | |
| » | Channel 3 termination enabled | JP1/2 | Closed | 
| Channel 3 termination disabled | JP1/2 | Open | |
| » | Channel 4 termination enabled | JP1/3 | Closed | 
| Channel 4 termination disabled | JP1/3 | Open | |
| » | Factory configured - do not alter | JP1/4 | Open | 
| » | Factory configured - do not alter | JP1/5 | Open | 
| TERMINATION CONFIGURATION | 
| Notes: All termination jumpers (JP1/1-JP1/5) should remain closed on the daughterboard unless operating in dual host mode or using a differential SCSI distribution board. When using differential SCSI, external termination must be used and termination on the controller and daughterboard must be disabled. All termination jumpers (JP1/1-JP1/5 should be opened.) If dual host mode is not used, all JP1 termination jumpers should be closed. | 
| MISCELLANEOUS TECHNICAL NOTES | 
| The DBI960SX supports three SCSI channels. Two are drive channels and the third can be configured as either a second host channel or a third drive channel. | 
 
Battery Backup Unit
| CONNECTIONS | |||
| Function | Location | Function | Location | 
| 3-pin connector - external battery source | J1 | 2-pin connector - VCC source for external LED | J4 | 
| 12-pin connector to controller board | J3 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Backup power source is internal (on-board batteries) | J2 | INT | 
| Backup power source is external (off-board batteries) | J2 | EXT | |
| Note: J2 is located on the reverse side of the Battery Backup card. | |||
| REFRESH TIMING SELECTION | ||
| Timing | J5 | J6 | 
| Self-refresh | N/A | SELF | 
| Normal refresh | NORM | C/R | 
| Extended refresh (for low power memory | LPWR | C/R |