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Summary of Contents for Memtech SC2500 Stinger
- Page 1 SC2500 Stinger 2.5” Solid State SCSI Drive User Guide 153866-001 Revision 2.1 May 6, 2003 Memtech SSD Corporation 7628 Las Positas Road Livermore, CA 94550 (800)445-5511 www.memtech.com...
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Page 2: Table Of Contents
Table Of Contents HIGHLIGHTS INTRODUCTION GENERAL DESCRIPTION SCSI Interface SCSI Connector SCSI Commands GENERAL SPECIFICATIONS INSTALLATION Default Configuration Hardware Installation Procedure Power and Cable Attachments Software Installation Procedure JUMPER CONFIGURATION Switch Locations Default Jumper Configuration SCSI ID Selection Write Protection Termination SCSI ID Source Selection Other Jumper Definitions... -
Page 3: Highlights
Direct-Access device commands, and as with all single-ended SCSI units, the SC2500 may be placed up to 18 feet (6 m) from the host SCSI controller. Data integrity is maintained using Memtech’s proprietary Active Remap™ technology. The drive is available in capacities ranging from 128 Mbytes to 9 Gbytes. -
Page 4: General Description
3. GENERAL DESCRIPTION 3.1 SCSI Interface An intelligent SCSI controller from QLogic, the FAS209, handles the SCSI interface for the SC2500. The FAS209 is SCSI-I and SCSI II compliant, and automates much of the interface overhead. It has a 16 byte FIFO, a DMA interface, and numerous command and control registers. -
Page 5: Scsi Connector
3.2 SCSI Connector The SC2500 uses a 50-pin right angle 2mm center connector mounted on the PCB to create both a power and signal connection to the host. Maximum cable length is 6 meters. The diagram below depicts connector orientation and location. 3.2.1 SCSI Connector Physical Orientation Pin #17 Pin #1... -
Page 6: Scsi Commands
3.2.2 SCSI Connector Pinout The following shows the pin connections for the SCSI connector used on the SC2500. SIGNAL SIGNAL +5 Volt Power +5 Volt Power GROUND GROUND GROUND -DB0 GROUND -DB1 GROUND -DB2 GROUND -DB3 GROUND -DB4 GROUND -DB5 -DB6 GROUND -DB7... - Page 7 appropriate medium-access command without returning CHECK CONDITION status, this command shall return a GOOD status. If the logical unit cannot become operational or is in a state such that an initiator action is required to make the unit ready, the target shall return CHECK CONDITION status with a sense key of NOT READY.
- Page 8 3.3.3 Request Sense Command – 03h Request Sense CDB The REQUEST SENSE command requests that the SC2500 transfer sense data to the initiator. If the SC2500 has no sense data available to return, it will return a sense key of NO SENSE and an additional sense code of NO ADDITIONAL SENSE INFORMATION.
- Page 9 Sense data format SC2500 User Guide Ver 2.1 May 6, 2003 Page 9 of 26...
- Page 10 3.3.4 Format Unit Command – 04h The FORMAT UNIT command formats the medium into initiator addressable logical blocks per the initiator-defined options. In addition, the medium may be certified and control structures may be created for the management of the medium and defects.
- Page 11 3.3.5 Read (6) Command – 08h The READ (6) command requests that the SC2500 transfer data to the initiator. The most recent data value written in the addressed logical block shall be returned. Read (6) CDB The logical block address field specifies the logical block at which the read operation shall begin.
- Page 12 3.3.7 Inquiry Command – 12h The INQUIRY command requests that information regarding parameters of the SC2500 be sent to the initiator. Inquiry CDB An enable vital product data (EVPD) bit of one specifies that the SC2500 return the optional vital product data specified by the page code field. If any optional fields in the CDB are set that the SC2500 does not support, it will return a CHECK CONDITION status with the sense key set to ILLEGAL REQUEST and an additional sense code of INVALID FIELD IN CDB.
- Page 13 Standard Inquiry Data Format Please refer to the SCSI specification for further details on the vital product data pages and formats. SC2500 User Guide Ver 2.1 May 6, 2003 Page 13 of 26...
- Page 14 3.3.8 Reserve Unit – 16h The RESERVE command is used to reserve a logical unit or, if the extent reservation option is implemented, extents within a logical unit. Reserve CDB 3.3.9 Release Unit – 17h The RELEASE command is used to release a previously reserved logical unit, or, if the extent release option is implemented, to release previously reserved extents within a logical unit.
- Page 15 3.3.10 Mode Sense The MODE SENSE (6) command provides a means for a target to report parameters to the initiator. It is a complementary command to the MODE SELECT (6) command. Mode Sense CDB A disable block descriptors (DBD) bit of zero indicates that the target may return zero or more block descriptors in the returned MODE SENSE data, at the target’s discretion.
- Page 16 3.3.12 Read Capacity – 25h The READ CAPACITY command provides a means for the initiator to request information regarding the capacity of the logical unit. Read Capacity CDB 3.3.13 Extended Read (10) – 28h The READ (10) command requests that the target transfer data to the initiator. The most recent data value written in the addressed logical block is returned.
- Page 17 3.3.14 Extended Write (10) The WRITE (10) command requests that the SC2500 write the data transferred by the initiator to the medium. Write (10) CDB SC2500 User Guide Ver 2.1 May 6, 2003 Page 17 of 26...
- Page 18 3.3.15 Erase Command Erase CDB The ERASE (10) command requests that the target erase the specified number of blocks starting at the specified logical block address on the medium. As used here, erased means the medium shall be erased. The previous data recorded on the medium, if any, shall not be recoverable.
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Page 19: General Specifications
4. GENERAL SPECIFICATIONS Interface SCSI Compatibility ANSI X3.131-1994 SCSI Device Type 0 - Direct Access Device Maximum Capacity 9 Gbytes Bytes/Block Bus Width 8 bits Termination Active – on board Data Transfer Specifications Bus width 1 byte (8 bits) Read Transfer Rate 7.0 Mbyte/sec., sustained Write Transfer Rate 1.5 Mbytes/sec sustained... -
Page 20: Installation
5. INSTALLATION 5.1 Default Configuration Refer to section 6 for detailed jumper configuration information. The default jumper switch configuration is given in the table below. Always power down the unit before changing the SCSI ID or write protect switches. Changing these settings with power applied may result in the changes not being recognized. -
Page 21: Power And Cable Attachments
5.2.8 Make sure that pin one on the cable, on the SCSI controller and on the SC2500 are correctly aligned. The SC2500 uses a square pad on the connector to indicate pin one, and most cables are marked with a triangle on the connector or a stripe on the cable itself to indicate the first pin. -
Page 22: Jumper Configuration
JUMPER CONFIGURATION 6.1 Switch Locations The following diagram shows the unit as viewed from the bottom, and shows the relative location of the switches and jumpers as described in the text below. Opt2 Opt1 SCSI Interface Figure 2: Bottom view of SC2500 SC2500 User Guide Ver 2.1 May 6, 2003 Page 22 of 26... -
Page 23: Default Jumper Configuration
6.5 Termination Memtech’s SC2500 employs active termination on the SCSI drive. Termination is normally disabled on the drive. To enable termination, move SW1-4 to the ON position. To supply power to the Termination Power line on the SCSI cable, move SW1-5 to the ON position. -
Page 24: Scsi Id Source Selection
If the LED issues a repeating blink code (accompanied by the drive not responding to SCSI commands), this indicates a hard error condition as listed in the table below. Contact the Memtech factory for repair service. Number of Blinks Error... -
Page 25: Unit Does Not Respond To Scsi Commands
Number of Blinks Error No Flash memory detected Invalid Remap Table – drive automatically write protected Remap Table disabled (SW1-7 ON) 7.3 Unit does not respond to SCSI commands - If the unit passes power-up diagnostics, but does not respond to SCSI commands, there may be a SCSI ID contention among the SCSI bus units. -
Page 26: Appendix
In no event shall Memtech be liable for any lost profits, lost savings or other incidental or consequential damages arising out of the use of, or inability to use, this product.
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