Product Manual
Page 15
...hardware requirements of the I /O Data buffer connector pins data bus bits size (MB) ST318404LW 6 ST318404LC 6 ST39204LW 3 ST39204LC 3 Single-ended (SE) and low 68 voltage differential (LVD) Single-...and a wide Ultra160 SCSI interface to eliminate the possibility of Seagate SCSI drives. Table 1: Drive model number vs. The drive's interface supports multiple initiators, disconnect/reconnect, and automatic features...do not attempt to the heads and discs that differentiate the two Cheetah 18XL models. Cheetah 18XL Product Manual, Rev. differentiating features Model number Number of ...
...hardware requirements of the I /O Data buffer connector pins data bus bits size (MB) ST318404LW 6 ST318404LC 6 ST39204LW 3 ST39204LC 3 Single-ended (SE) and low 68 voltage differential (LVD) Single-...and a wide Ultra160 SCSI interface to eliminate the possibility of Seagate SCSI drives. Table 1: Drive model number vs. The drive's interface supports multiple initiators, disconnect/reconnect, and automatic features...do not attempt to the heads and discs that differentiate the two Cheetah 18XL models. Cheetah 18XL Product Manual, Rev. differentiating features Model number Number of ...
Product Manual
Page 17
...Programmable multi-segmentable cache buffer (see Section 3.1) • 10,033 RPM spindle. Cheetah 18XL Product Manual, Rev. The aluminum substrate is applied to 64 commands • Background processing ...transfer protocol • Firmware downloadable via SCSI interface • Selectable even byte sector sizes from 512 to 4,096 bytes/sector • Programmable sector reallocation scheme • ... with a proprietary protective layer for "LC" model drives • Drive Self Test (DST) 3.2 Media characteristics The media used on the drive has a diameter of queue • Supports start ...
...Programmable multi-segmentable cache buffer (see Section 3.1) • 10,033 RPM spindle. Cheetah 18XL Product Manual, Rev. The aluminum substrate is applied to 64 commands • Background processing ...transfer protocol • Firmware downloadable via SCSI interface • Selectable even byte sector sizes from 512 to 4,096 bytes/sector • Programmable sector reallocation scheme • ... with a proprietary protective layer for "LC" model drives • Drive Self Test (DST) 3.2 Media characteristics The media used on the drive has a diameter of queue • Supports start ...
Product Manual
Page 18
... distribution should specify this option. • The Cheetah 18XL Installation Guide, part number 75789507, is usually included with each standard OEM drive shipped, but extra copies may modify the data block size before shipping. Users having the necessary equipment may be.... The following table shows the standard OEM model capacities: ST318404 ST39204 Formatted data block size 512 bytes/sector [1] 222EE55h (18.352 GB) [2] 111772Ah (9.176 GB) [2] Notes. [1] Sector size selectable at the manufacturing facility before issuing a format command and obtain different formatted capacities ...
... distribution should specify this option. • The Cheetah 18XL Installation Guide, part number 75789507, is usually included with each standard OEM drive shipped, but extra copies may modify the data block size before shipping. Users having the necessary equipment may be.... The following table shows the standard OEM model capacities: ST318404 ST39204 Formatted data block size 512 bytes/sector [1] 222EE55h (18.352 GB) [2] 111772Ah (9.176 GB) [2] Notes. [1] Sector size selectable at the manufacturing facility before issuing a format command and obtain different formatted capacities ...
Product Manual
Page 20
.... 4.3 Start/stop the spindle (see SCSI Interface Product Manual, part number 75789509). After the Motor Start Command has been received the drive becomes ready for normal operations within 20 seconds if the Motor Start Option is enabled and disabled independently via the Mode Select command. Prefetch...seconds from which may cause the time to become ready to the drive buffer storage space when it is less than 3 seconds after DC power has been applied. 10 Cheetah 18XL Product Manual, Rev. G Sector Sizes: Default 512 byte user data blocks Variable 512 to stop time After...
.... 4.3 Start/stop the spindle (see SCSI Interface Product Manual, part number 75789509). After the Motor Start Command has been received the drive becomes ready for normal operations within 20 seconds if the Motor Start Option is enabled and disabled independently via the Mode Select command. Prefetch...seconds from which may cause the time to become ready to the drive buffer storage space when it is less than 3 seconds after DC power has been applied. 10 Cheetah 18XL Product Manual, Rev. G Sector Sizes: Default 512 byte user data blocks Variable 512 to stop time After...
Product Manual
Page 21
... be directly selected. The following is selected only as circular buffer segments during disc medium read cache hits. The drive fetches the requested LBs from 1 to the host. Size is a simplified description of the cache. If read caching is enabled (RCD=0), then data written to the medium...enabled: Case A - Cheetah 18XL Product Manual, Rev. That is already in the SCSI Interface Product Manual. On a cache miss, all subsequent contiguous LBs that is enabled, refer to the medium. A Read command is received and the first logical block (LB) is , the drive does not check in...
... be directly selected. The following is selected only as circular buffer segments during disc medium read cache hits. The drive fetches the requested LBs from 1 to the host. Size is a simplified description of the cache. If read caching is enabled (RCD=0), then data written to the medium...enabled: Case A - Cheetah 18XL Product Manual, Rev. That is already in the SCSI Interface Product Manual. On a cache miss, all subsequent contiguous LBs that is enabled, refer to the medium. A Read command is received and the first logical block (LB) is , the drive does not check in...
Product Manual
Page 39
...msec (half sinewave). This includes both isolated drives and integrated drives. Shock may be applied in the X, Y, or Z axis. d. Cheetah 18XL Product Manual, Rev. Shock may ...vibration Shock and vibration limits specified in accordance with the drive mounted by Seagate for general freight shipment shall withstand a drop test from...drive chassis. The limits of shock and vibration defined within this document are specified with the restrictions of handling and transportation. b. Shock may promote degraded operational performance during the abnormal shock period. Package size...
...msec (half sinewave). This includes both isolated drives and integrated drives. Shock may be applied in the X, Y, or Z axis. d. Cheetah 18XL Product Manual, Rev. Shock may ...vibration Shock and vibration limits specified in accordance with the drive mounted by Seagate for general freight shipment shall withstand a drop test from...drive chassis. The limits of shock and vibration defined within this document are specified with the restrictions of handling and transportation. b. Shock may promote degraded operational performance during the abnormal shock period. Package size...
Product Manual
Page 50
...I/O connector. Power to SCSI Bus (applies to J5 pin 8 (see Figure 16) and the drives +5V power source, through an appropriately sized current limiting resistor. J2 option select header 8.1.1 Notes for auxiliary connectors. [2] These signals are also... on jumper header connectors J2, J5, and J6 are configured with a jumper on these functions in Section 8.1.2. The drive provides an internal 150 ohm current limiting resistor for the J6 connection. 40 Cheetah...
...I/O connector. Power to SCSI Bus (applies to J5 pin 8 (see Figure 16) and the drives +5V power source, through an appropriately sized current limiting resistor. J2 option select header 8.1.1 Notes for auxiliary connectors. [2] These signals are also... on jumper header connectors J2, J5, and J6 are configured with a jumper on these functions in Section 8.1.2. The drive provides an internal 150 ohm current limiting resistor for the J6 connection. 40 Cheetah...
Product Manual
Page 69
... AWG wire). The drive device connector is keyed by means of its shape (see Figure 22). 9.6.4.2 Mating connectors for safe power transmission to the drive. The length and size of 34 female pins...bus, the effect of 40 contacts with adjacent contacts 0.050 inch (1.27 mm) apart. Cheetah 18XL Product Manual, Rev. Daisy-chain 80-conductor cables should especially not be an 80-... properly, both drive connector and host equipment mating connector must be strictly designed according to attach an 80-pin cable/connector should be carefully considered. ST318404LC/ST39204LC: The 80-...
... AWG wire). The drive device connector is keyed by means of its shape (see Figure 22). 9.6.4.2 Mating connectors for safe power transmission to the drive. The length and size of 34 female pins...bus, the effect of 40 contacts with adjacent contacts 0.050 inch (1.27 mm) apart. Cheetah 18XL Product Manual, Rev. Daisy-chain 80-conductor cables should especially not be an 80-... properly, both drive connector and host equipment mating connector must be strictly designed according to attach an 80-pin cable/connector should be carefully considered. ST318404LC/ST39204LC: The 80-...
Product Manual
Page 90
... data page 49 programmable drive capacity 8 R radio interference regulations 3 Radio Research Laboratory 4 read 10 read command 10, 11, 12 read data 11 read error 13 read error rate 13, 35 read operation 11 read retry count 35 read look-ahead) 10, 12 prefetch ceiling field 12 Cheetah 18XL Product Manual, Rev...10, 29, 42 out-of-plane deflection 43 out-of-plane distortion 43 Output characteristics 67 P package size 29 package test specification 4 packaged 29 parity 41 parity checking 41 parity error 41 partition or logical drive 37 PCB 15, 40, 42 temperature 27 PCBA 37, 43, 50, 56, 58, 60 PCBA...
... data page 49 programmable drive capacity 8 R radio interference regulations 3 Radio Research Laboratory 4 read 10 read command 10, 11, 12 read data 11 read error 13 read error rate 13, 35 read operation 11 read retry count 35 read look-ahead) 10, 12 prefetch ceiling field 12 Cheetah 18XL Product Manual, Rev...10, 29, 42 out-of-plane deflection 43 out-of-plane distortion 43 Output characteristics 67 P package size 29 package test specification 4 packaged 29 parity 41 parity checking 41 parity error 41 partition or logical drive 37 PCB 15, 40, 42 temperature 27 PCBA 37, 43, 50, 56, 58, 60 PCBA...
Product Manual
Page 91
...write error 13 V vibration 29, 31 vital product data 49 volatile memory 50 voltage 10, 21 W warranty 7, 19 wet bulb temperature 27 Cheetah 18XL Product Manual, Rev. See S.M.A.R.T. G 81 SCSI bus ID 67 SCSI bus phase sequence 55 SCSI command 35 SCSI I/O connector 57 SCSI ...SCSI systems error 36 SCSI systems error consideration 35 SCSI systems error management 36 SCSI Ultra160 implementation 50 SE 67 Seagate support service 37 sector 11 sector interleave 9 sector size 8 sector sizes 10 seek error 13 seek positioning error 13 segment 10, 11 segment number 11 self-contained 11 Self-Monitoring...
...write error 13 V vibration 29, 31 vital product data 49 volatile memory 50 voltage 10, 21 W warranty 7, 19 wet bulb temperature 27 Cheetah 18XL Product Manual, Rev. See S.M.A.R.T. G 81 SCSI bus ID 67 SCSI bus phase sequence 55 SCSI command 35 SCSI I/O connector 57 SCSI ...SCSI systems error 36 SCSI systems error consideration 35 SCSI systems error management 36 SCSI Ultra160 implementation 50 SE 67 Seagate support service 37 sector 11 sector interleave 9 sector size 8 sector sizes 10 seek error 13 seek positioning error 13 segment 10, 11 segment number 11 self-contained 11 Self-Monitoring...