Product Manual
Page 5
..., 59, 60, 61, 62, 65, 70, 71 1, 3, 40, 41, 48, 49, 51, 52, 53, 59, 60, 61, 62, 65, 68, 70 Note. Olson L. Newman/J. Product Manual 83328880 is Volume 1 of a two-volume document with the SCSI interface information in theVolume 2 SCSI-2 Interface Product...
..., 59, 60, 61, 62, 65, 70, 71 1, 3, 40, 41, 48, 49, 51, 52, 53, 59, 60, 61, 62, 65, 68, 70 Note. Olson L. Newman/J. Product Manual 83328880 is Volume 1 of a two-volume document with the SCSI interface information in theVolume 2 SCSI-2 Interface Product...
Product Manual
Page 11
... number 77738479) describes the general SCSI interface characteristics of this manual. N/ND type W/WD type WC/DC type Figure 1. Barracuda 4 disc drives ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Barracuda™ 4 disc drives. D 1 1.0 Scope This manual describes Seagate Technology®, Inc. Barracuda drives support the Small Computer System Interface-2 (SCSI-2) as described in the ANSI SCSI and SCSI-2 interface specifications...
... number 77738479) describes the general SCSI interface characteristics of this manual. N/ND type W/WD type WC/DC type Figure 1. Barracuda 4 disc drives ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Barracuda™ 4 disc drives. D 1 1.0 Scope This manual describes Seagate Technology®, Inc. Barracuda drives support the Small Computer System Interface-2 (SCSI-2) as described in the ANSI SCSI and SCSI-2 interface specifications...
Product Manual
Page 13
... agencies conditionally certify component parts, such as amended by law. 2.1 Standards The Barracuda disc drive is supplied as a component part. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 3 2.0 Applicable standard and reference documentation Seagate takes all reasonable steps to meet EMC/regulatory requirements. Drives are certifiable to currently accepted standards. If this document takes precedence. The...
... agencies conditionally certify component parts, such as amended by law. 2.1 Standards The Barracuda disc drive is supplied as a component part. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 3 2.0 Applicable standard and reference documentation Seagate takes all reasonable steps to meet EMC/regulatory requirements. Drives are certifiable to currently accepted standards. If this document takes precedence. The...
Product Manual
Page 15
..., random access storage devices designed to service items in the sealed enclosure (heads, media, actuator, etc.) as this requires special facilities. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The Barracuda drive's interface supports multiple initiators, disconnect/ reconnect, self-configuring host software, and automatic features that relieve the host from knowing the physical characteristics...
..., random access storage devices designed to service items in the sealed enclosure (heads, media, actuator, etc.) as this requires special facilities. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The Barracuda drive's interface supports multiple initiators, disconnect/ reconnect, self-configuring host software, and automatic features that relieve the host from knowing the physical characteristics...
Product Manual
Page 16
..., patented, straight arm design provides excellent performance with minimal power dissipation. 6 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The drive automatically goes to the drive and the head load process begins. Barracuda drives decode track 0 location data from movement during shipping and handling. D Barracuda drives use a dedicated landing zone at the innermost radius of destroying or degrading...
..., patented, straight arm design provides excellent performance with minimal power dissipation. 6 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The drive automatically goes to the drive and the head load process begins. Barracuda drives decode track 0 location data from movement during shipping and handling. D Barracuda drives use a dedicated landing zone at the innermost radius of destroying or degrading...
Product Manual
Page 17
... seek performance • LSI circuitry • Balanced low-mass rotary voice-coil actuator D 7 4.0 Standard features Barracuda 4 drives have the following standard features: • Integrated SCSI controller • Single-ended or differential SCSI drivers and receivers... Active termination for office environment • Low power consumption 4.1.1 Reliability • 800,000 hour MTBF • Adaptive seek velocity; ST15150N/ND/W/WD/WC/DC Product Manual, Rev. average latency = 4.17 msec • Command queuing of queue • Supports start and stop commands • Provides ...
... seek performance • LSI circuitry • Balanced low-mass rotary voice-coil actuator D 7 4.0 Standard features Barracuda 4 drives have the following standard features: • Integrated SCSI controller • Single-ended or differential SCSI drivers and receivers... Active termination for office environment • Low power consumption 4.1.1 Reliability • 800,000 hour MTBF • Adaptive seek velocity; ST15150N/ND/W/WD/WC/DC Product Manual, Rev. average latency = 4.17 msec • Command queuing of queue • Supports start and stop commands • Provides ...
Product Manual
Page 18
...-available capacity also depends on the spare reallocation scheme selected. 8 4.2 4.3 4.3.1 4.3.2 4.3.3 4.3.4 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. ST15150 drives have nine (9) spare sectors per cylinder and one (1) spare cylinder per block. Barracuda 4 Installation Guide Part number 83328870 This manual provides basic information about how to obtain different formatted capacities. D Unformatted and Formatted Capacities Standard...
...-available capacity also depends on the spare reallocation scheme selected. 8 4.2 4.3 4.3.1 4.3.2 4.3.3 4.3.4 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. ST15150 drives have nine (9) spare sectors per cylinder and one (1) spare cylinder per block. Barracuda 4 Installation Guide Part number 83328870 This manual provides basic information about how to obtain different formatted capacities. D Unformatted and Formatted Capacities Standard...
Product Manual
Page 19
... scheme. These external terminators must be provided by other devices, and the new drive is not the same as the host adapter. • If multiple devices are on single-ended (ST15150N/ W/WC) drives by enabling this drive. The drive is not necessary to the end of the SCSI bus cable. b. D 9...Internal termination is available on the bus, set the drive's SCSI ID to one that the SCSI ID of the drive is not attached to low-level format this feature with a jumper (see Section 10). ST15150N/ND/W/WD/WC/DC Product Manual, Rev. External terminators are not normally needed for ...
... scheme. These external terminators must be provided by other devices, and the new drive is not the same as the host adapter. • If multiple devices are on single-ended (ST15150N/ W/WC) drives by enabling this drive. The drive is not necessary to the end of the SCSI bus cable. b. D 9...Internal termination is available on the bus, set the drive's SCSI ID to one that the SCSI ID of the drive is not attached to low-level format this feature with a jumper (see Section 10). ST15150N/ND/W/WD/WC/DC Product Manual, Rev. External terminators are not normally needed for ...
Product Manual
Page 21
... in process when a SCSI command is received, the command is complete, the drive continues the calibration for thermal calibration will not interrupt an active SCSI command. When execution of Barracuda 4 drives. 5.1 Internal drive characteristics Drive capacity, Mbytes unformatted 5,062 Read/write data heads, maximum (physical) 21 Bytes... features of the first queued command is queued until calibration for the specific head being calibrated completes. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. If thermal calibration is in process when the drive receives the SCSI command.
... in process when a SCSI command is received, the command is complete, the drive continues the calibration for thermal calibration will not interrupt an active SCSI command. When execution of Barracuda 4 drives. 5.1 Internal drive characteristics Drive capacity, Mbytes unformatted 5,062 Read/write data heads, maximum (physical) 21 Bytes... features of the first queued command is queued until calibration for the specific head being calibrated completes. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. If thermal calibration is in process when the drive receives the SCSI command.
Product Manual
Page 22
... remain uncalibrated for more than T (600) seconds and that no thermal calibration interruptions will occur closer together in the drive (see Section 5.1 "Internal drive characteristics"). 4. 12 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The drive then delays a fixed period of 25 to 50 milliseconds prior to find an idle period of time (D) before initiating...
... remain uncalibrated for more than T (600) seconds and that no thermal calibration interruptions will occur closer together in the drive (see Section 5.1 "Internal drive characteristics"). 4. 12 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The drive then delays a fixed period of 25 to 50 milliseconds prior to find an idle period of time (D) before initiating...
Product Manual
Page 23
... 512-byte sectors Maximum (with verify) 60 minutes Maximum (without disconnect* (msec) read write 8.0 9.0 0.6 0.9 17 19 Drive including controller overhead without verify) 40 minutes No Yes Yes Target completes SCSI command Select next head Seek to TCAL cyl and select...to TCAL cyl and select head zero 5.2.1 5.2.2 Figure 3. No Yes Set 10 minute timer Is SCSI command in No progress? ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 13 Start A Has 10 min. Has No target received a SCSI command? OEM interruptible thermal calibration implementation Seek ...
... 512-byte sectors Maximum (with verify) 60 minutes Maximum (without disconnect* (msec) read write 8.0 9.0 0.6 0.9 17 19 Drive including controller overhead without verify) 40 minutes No Yes Yes Target completes SCSI command Select next head Seek to TCAL cyl and select...to TCAL cyl and select head zero 5.2.1 5.2.2 Figure 3. No Yes Set 10 minute timer Is SCSI command in No progress? ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 13 Start A Has 10 min. Has No target received a SCSI command? OEM interruptible thermal calibration implementation Seek ...
Product Manual
Page 24
.../from the host. ** Assumes system ability to support 5.0 Mbytes/sec and no cable loss. transfer rate, max instantaneous ST15150N/ND ST15150W/WD/WC/DC 5.0 Mbytes/sec*, ** 10.0 Mbytes/sec*, *** Synchronous transfer rate fast ST15150N/ND 0.5 to 10.0 Mbytes/sec Synchronous transfer rate wide ST15150W/WD/WC/DC 0.5 to 20.0 Mbytes/sec Read... 512-byte data blocks 180 to support 10.0 Mbytes/sec and no cable loss. *** Assumes system ability to 4,096 bytes SCSI interface data Async. 14 ST15150N/ND/W/WD/WC/DC Product Manual, Rev.
.../from the host. ** Assumes system ability to support 5.0 Mbytes/sec and no cable loss. transfer rate, max instantaneous ST15150N/ND ST15150W/WD/WC/DC 5.0 Mbytes/sec*, ** 10.0 Mbytes/sec*, *** Synchronous transfer rate fast ST15150N/ND 0.5 to 10.0 Mbytes/sec Synchronous transfer rate wide ST15150W/WD/WC/DC 0.5 to 20.0 Mbytes/sec Read... 512-byte data blocks 180 to support 10.0 Mbytes/sec and no cable loss. *** Assumes system ability to 4,096 bytes SCSI interface data Async. 14 ST15150N/ND/W/WD/WC/DC Product Manual, Rev.
Product Manual
Page 25
...in contiguous logical blocks immediately beyond that is already in the SCSI-2 Interface Product Manual). Read command is received and the first logical block is prefetched may replace data already in the cache for the drive to exceed 30 seconds. D 15 5.4 Start/stop the spindle (see the ... internal controller to stop time Disabling the Motor Start option causes the drive to become ready to become ready within 30 seconds (excluding an error recovery procedure, if needed). ST15150N/ND/W/WD/WC/DC Product Manual, Rev. This data may cause the time it takes for immediate ...
...in contiguous logical blocks immediately beyond that is already in the SCSI-2 Interface Product Manual). Read command is received and the first logical block is prefetched may replace data already in the cache for the drive to exceed 30 seconds. D 15 5.4 Start/stop the spindle (see the ... internal controller to stop time Disabling the Motor Start option causes the drive to become ready to become ready within 30 seconds (excluding an error recovery procedure, if needed). ST15150N/ND/W/WD/WC/DC Product Manual, Rev. This data may cause the time it takes for immediate ...
Product Manual
Page 26
... of segments to the initiator in accordance with the "buffer-full" ratio specification given in the segment. 16 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The drive prefetches additional logical blocks contiguous to 16. The drive stops filling the segment when the maximum prefetch value has been transferred. When a requested logical block is...
... of segments to the initiator in accordance with the "buffer-full" ratio specification given in the segment. 16 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The drive prefetches additional logical blocks contiguous to 16. The drive stops filling the segment when the maximum prefetch value has been transferred. When a requested logical block is...
Product Manual
Page 27
... command. If there are, the respective cache segments are still checked and cleared, if needed, for spindle sync. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. However, the drive does not overwrite data that uses a drive buffer storage area where the data to be written to be written are being written (see if any...
... command. If there are, the respective cache segments are still checked and cleared, if needed, for spindle sync. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. However, the drive does not overwrite data that uses a drive buffer storage area where the data to be written to be written are being written (see if any...