Tascam MX-2424 User's Manual
Contents
1. TEAC Professional Division MX 2424 24 Bit 24 Track Hard Disk Recorder MX 2424 Version 2 1 SCSI Instructions SCSI Terminology SCSI Terminology It is important to understand some SCSI basics before adding drives to an MX 2424 The first step in this understanding is familiarity with a few simple terms SCSI Stands for Small Computer System Interface This is the data transfer method and physical connection used by the MX 2424 for connection to hard drives and backup solutions Throughput This is the amount of data transferred from one device component to another in a specified time period 8 Bit Data Transfer This refers to data transfer between a SCSI device and the MX 2424 s processors and supports throughput of up to 20Mbytes second This should not be confused with the term 24 bit audio which refers to the resolution of recorded audio 16 Bit Data Transfer This refers to data transfer between a SCSI device and the MX 2424 s processors and supports throughput of up to 80Mbytes second This should not be confused with the term 24 bit audio which refers to the resolution of recorded audio Ultra SCSI Narrow This type of SCSI device uses 8 bit data transfers and generally employs a 50 pin connector An example of such a device would be the DVD GF2050 DVD RAM drive offered by TASCAM as a backup solution for the MX 2424 Ultra Wide SCSI This type of SCSI device uses 16 bit data trans2. setting the device ID 14 Proper Termination A terminator provides electrical circuitry at the end of a SCSI chain to prevent the reflection of electrical signals when they reach the end of the chain The SCSI bus requires termination only at the end of the SCSI chain The MX 2424 includes an internal terminator as standard which should not be removed There are several types of SCSI Termination for use with external devices Only the specified types of terminators described below should be used with the MX 2424 When a SCSI chain consists of LVD devices The MX 2424 must use an LVD SE Terminator on the last device When a SCSI chain contains single ended wide or narrow SCSI devices the MX 2424 must use an active terminator on the last device All 16 bit drives should be configured to supply Term Power to the bus usually default setting This configuration is usually a jumper setting Please refer to drive documentation for directions on installing this jumper setting All connection and disconnection of SCSI devices cables terminators must be done with all power off 15
3. High Density HD and Very High Density 68 VHDCI The MX 2424 has a standard HD connector located on the back of the unit However by using a HD to VHDCI SCSI cable it may attach to external devices with VHDCI connectors Before configuring your system verify the type of 68 Pin devices you wish to connect to SCSI Connection Matrix 2424 Approved SCSI Configurations ial Internal Drive ExternalDrive Front HD Front HD Ext HD Ext HD Front Front Front HD Data Ext HD Ext MERD DVD Tape Ext BYP a Rhino Jr Express Express Orb Each Storcase device in this configuration MUST use an Isolator Board Each external SCSI cable may not exceed 1 5 ft each in length Numeral indicates the maximum number of a specific device that can be connected in that position SCSI Rules There are a few rules that must be considered when connecting SCSI devices to the MX 2424 1 2 3 Narrow 8 bit devices connected externally to the MX 2424 must be connected at the end of the SCSI chain Narrow 8 bit devices may be installed in the front panel bay of the MX 2424 with the proper adapter ADP 9053 Only Approved SCSI devices should be connected to the MX 2424 in approved configurations For a list of currently approved SCSI devices check the TASCAM web site at This list will be updated as needed A SCSI chain must always be properly terminated Each device in a SCSI chain must have its own unique SCS
4. I ID number Examples of Correct SCSI Configurations KEY HD Approved Hard Drive ORB Orb Drive w Built In Active Termination IT LVD SE Internal Terminator Included with the MX 2424 MB MX 2424 Motherboard EC External SCSI Connector On MX 2424 BU Single Ended Backup Solution DVD RAM or Travan IA 68 Pin to 50 Pin Internal Adapter ADP 9053 LET LVD SE External Terminator AET Active External Terminator MX 2424 with standard internal hard drive MX 2424 with standard internal hard drive and single ended backup device DVD RAM Travan in the front bay 68 Pin to 68 Pin Wide SCSI Cable fe pr an yp al External Enclosure MX 2424 with standard internal hard drive and single ended backup device DVD RAM or Travan in external 68 pin case 168 Pin to 50 Pin SCSI Cable with 9 Line 50 Pin External Enclosure MX 2424 with standard internal hard drive and single ended backup device DVD RAM or Travan in external 50 pin case 10 68 Pin to 68 Pin Wide SCSI Cable iNet lt i 3c DS 100 External Enclosure 68 Pin to 68 Pin DS 100 Wide SCSI Cable External Enclosure MX 2424 with standard internal hard drive single ended backup device DVD RAM or Travan in the front bay and two external hard drives F 168 Pin to 50 Pin SCSI iCable with 9 Line Orb Drive w Built in Active Termination MX 2424 with standard internal hard drive singl
5. VD and Wide use 3 ft P N SQ 9 9 3 StorCase Technology ww storcase com 17600 Newhope St Fountain Valley CA 92708 800 435 0642 Supported SCSI Cables e 68 Wide Very High Density to 68 Pin High Density Cable P N DC SCSI3 U2 3 e 68 Wide Very High Density to 68 Pin Very High Density Cable P N DC U2 3 Supported Terminators e 50 pin Centronix Active Terminator P N DX100 S TA e 50 pin High Density MM Active Terminator P N DX100 S2 TA e 68 pin Wide Very High Density LVD SE Terminator P N DX U2 LVD SE Removable Hot Swappable SCSI Solutions The following hot swappable StorCase SCSI Carrier Frame Systems are approved for use with the MX 2424 when configured according to the diagrams on the following pages Rhino Jr System Frame amp Carrier RJR100 SW B Wide RJR100 SWU2X B Ultra 2 Carrier Only RJR100 CSW B Wide RJR100 CSWU2X B Ultra 2 Ultra 160 Data Express System Frame amp Carrier DE100i SW160 B New Part S20A100 includes Isolator Board Carrier Only DE100i CSW160 B Frame Only DE100i RSW160 B New Part S20A101 includes Isolator Board Ultra 2 Data Express System Carrier Only DE100i CSWU2X B Frame Only DE100i RSWU2X B Isolator Board DX1 200 X2 RH Wide Data Express System Carrier Only DE100i CSW B For information on the Storcase Isolator board for the Ultra 2 and Ultra 160 Data Express frames please contact Storcase at 800 435 0642 Compat
6. d drives connected in external 68 pin cases 13 68 Pin to 68 Pin Wide SCSI Cable DS 100 2 External Enclosure 68 Pin to 68 Pin Wide SCSI Cable DS 100 2 External Enclosure MX 2424 with internal hard drive removed disconnected and four hard drives connected externally in 68 pin cases SCSI Cable Length The total cable length of a SCSI chain includes the internal cabling in the 2424 itself all carriers and drive bays connected and the cable used to connect between any external drive cases The MX 2424 supports a maximum cable length of 6 feet This maximum length however is dependent on the quality of the SCSI cables in a chain Number of SCSI Devices The MX 2424 is capable of supporting up to seven SCSI device IDs However the total number of SCSI devices is dependent on a number of factors The MX 2424 will function reliably with up to a maximum of four SCSI devices connected at one time as shown in the preceding diagrams The MX 2424 has its own SCSI ID assigned to it The Max Number of SCSI Devices refers to internal devices external devices and MX 2424 itself The internal drive in the MX 2424 is assigned at the factory to use ID 0 Note A different SCSI ID number 1 6 on a device connected externally or in the front bay of the MX 2424 must be assigned to each device Improper ID setting will cause the MX 2424 to freeze while mounting devices Please refer to drive documentation for directions on
7. e ended backup device DVD RAM or Travan in the front bay and external Orb Drive MX 2424 with standard internal hard drive and second hard drive in the front bay 11 2424 68 Pin to 68 Pin Wide SCSI Cable M DS 100 External Enclosure MX 2424 with standard internal hard drive second hard drive in the front bay and a single ended backup device DVD RAM or Travan in an external 68 pin case MX 2424 168 Pin to 50 Pin SCSI Cable with 9 Line 50 Pin External Enclosure MX 2424 with standard internal hard drive second hard drive in the front bay and a single ended backup device DVD RAM or Travan in an external 68 pin case MX 2424 168 Pin to 50 Pin SCSI Cable with 9 Line Orb Drive Built in Active Termination MX 2424 with standard internal hard drive second hard drive in the front bay and an external Orb drive 12 68 68 Wide SCSI Cable ete ak a lh 2424 DS 100 External Enclosure 68 Pin to 68 Pin Wide SCSI Cable 08 100 Enclosure MX 2424 with standard internal hard drive second hard drive installed in the front bay and two hard drives connected in external 68 pin cases 68 Pin to 68 Pin Wide SCSI Cable External Enclosure 68 Pin to 68 Pin Wide SCSI Cables DS 100 External Enclosure DS 100 External Enclosure MX 2424 with standard internal hard drive and three har
8. fers and generally employs a 68 pin connector LVD Wide Ultra2 SCSD Stands for Low Voltage Differential also known as Ultra2 SCSI This is the particular type of SCSI protocol used by the MX 2424 LVD SCSI uses 16 bit data transfers and employs a High Density or Very High Density 68 pin connector This allows throughput of 80 Mbytes second Low Voltage Differential LVD works by sending simultaneous pairs of data in a balanced configuration Just like a balanced audio signal the noise is rejected when the signals are summed Because of noise rejection the bus can operate at higher speeds and longer cable lengths The MX provides Ultra2 LVD performance on the internal and external bus SCSI Terminator This is a special device that must be attached to the last device in a SCSI chain for the system to function SCSI ID This is a number that is set on each SCSI device in a SCSI chain which identifies that device to the MX 2424 SCSI Cables Terminators There is a considerable difference in quality and performance of cables used to connect SCSI devices Low quality cables may cause data transmission errors file corruption and system malfunctions It is important to always use high quality SCSI cables amp terminators such as those available from TASCAM listed below for use with TASCAM distributed external drive enclosures SCSI MX2 SCSI MX3 5 51 3 68 pin High Density to 68 pin Very High Density SCSI cable for connec
9. ibility Considerations Systems that use single ended wide receiving frames will not function reliably with Ultra 2 and Ultra 160 carriers thus the DE100i CSW B carrier should be chosen when the widest possible compatibility is required The 7160 Frame Repeater board combination will accept SE Wide Ultra 2 or Ultra 160 carriers Ultra 160 Data Express models that include the isolator board on the frame S20A100 frame amp carrier black or S20A101 frame black should be used for maximum compatibility amp reliability Please refer to the Compatibility Chart below Mounting Un Mounting Drive in Removable Carriers When drives are installed in StorCase carrrier frames the MX 2424 can mount and un mount removable drives without required a system reboot Remember to un mount SHIFT MOUNT before removing any StorCase carriers from the MX 2424 to avoid data corruption and system errors To re mount the drive carrier lock it and press the MOUNT key Note that Rhino Jr and Data Express systems are not cross compatible External Drive Cases The following StorCase external drive cases are approved for use with the MX 2424 Data Silo DS 100 Single Bay DS100 1 160 B Dual Bay DS100 2 160 B Additional recommended sources for external drive enclosures Glyph Technology Note on High Density and Very High Density 68 Pin External Connectors There are two types of 68 Pin SCSI cables and terminators available for use with LVD devices
10. ting the 2424 to an External Drive Case 1 57 68 pin Very High Density SCSI cable for connecting External Drive Cases to each other 68 pin Very High Density LVD SE terminator for use with an External Drive Case Additional Recommended Sources for SCSI Cables Terminators and Adapters CS Electronics ww scsi cables com 17500 Gillette Ave Irvine California 92614 949 475 9100 Supported Internal Adapters e 68 to 50 Pin Internal Adapter for attaching a narrow back up device DVD RAM or Travan Tape to the internal bay on the MX 2424 P N ADP 9053 Supported External SCSI Cables e High Density 68 Pin to 68 Pin SCSI cable with Thumbscrews 3 ft P N HD68T HD68T 3ft 132U e High Density 68 to 68 Pin SCSI cable with Clip Locks 3 ft P N HD68C HD68C 3ft 132U e High Density 68 Pin to Centronix 50 Pin SCSI cable with High 9 Active Termination 3 ft P N T68A C50 3ft e High Density 68 Pin to High Density 50 Pin SCSI cable with High 9 Active Termination 3 ft P N T68A HDS50 3ft Supported Terminators e Centronix Active Negation Terminator P N TRM 8511 e HD 50 Active Negation Terminator P N TRM 8527 e 68 Pin High Density LVD SE Terminator P N TRM 8900L 68 Pin Very High Density LVD Terminator P N TRM 8920 Paralan Corporation ww paralan com 4655 Ruffner St San Diego CA 92111 858 560 7266 Supported SCSI Cables e 68 Pin to 68 Pin High density SCSI cable for L
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