Specifications
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...support • Automatic read/write data transfer • 3.7 ms seek time in read operation for 147 GB • 3.6 ms seek time in read operation for 73 GB • 3.3 ms seek time in read operation for 36 GB • Adaptive read ahead algorithm • Write Cache • Back to back write • ECC... actuator servo • High level of integration of the electronics • Non head disk contact start stop • Spindle rotation of 15,000 RPM • Automatic actuator lock • PFA (SMART) • Glass substrate disks Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification 3
...support • Automatic read/write data transfer • 3.7 ms seek time in read operation for 147 GB • 3.6 ms seek time in read operation for 73 GB • 3.3 ms seek time in read operation for 36 GB • Adaptive read ahead algorithm • Write Cache • Back to back write • ECC... actuator servo • High level of integration of the electronics • Non head disk contact start stop • Spindle rotation of 15,000 RPM • Automatic actuator lock • PFA (SMART) • Glass substrate disks Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification 3
Specifications
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...and 73GB, 20 for 36GB Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification 7 4.0 Drive characteristics 4.1 Formatted capacity Table 1: Formatted capacity Description HUS151414VL3800 HUS151473VL3800 HUS151436VL3800 HUS151414VL3600 HUS151473VL3600 HUS151436VL3600 Label capacity 147 GB 73 GB 36 GB Number of heads 10 Number of disks 5 Total data bytes (512 147,015,821,824 bytes/sector) 5 3 73,407,900,160 3 2 36... speed Recording density Track density Areal density Data zone 760 - 1129 Mb/sec 320 [MB/sec] 16MB 1 - 256 15,000 RPM 686 [Kbpi] (Max) 90,000 [TPI] (average) 61...
...and 73GB, 20 for 36GB Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification 7 4.0 Drive characteristics 4.1 Formatted capacity Table 1: Formatted capacity Description HUS151414VL3800 HUS151473VL3800 HUS151436VL3800 HUS151414VL3600 HUS151473VL3600 HUS151436VL3600 Label capacity 147 GB 73 GB 36 GB Number of heads 10 Number of disks 5 Total data bytes (512 147,015,821,824 bytes/sector) 5 3 73,407,900,160 3 2 36... speed Recording density Track density Areal density Data zone 760 - 1129 Mb/sec 320 [MB/sec] 16MB 1 - 256 15,000 RPM 686 [Kbpi] (Max) 90,000 [TPI] (average) 61...
Specifications
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4.5.1.2 Full stroke seek time Table 7: Full stroke seek time Function Read - 73 GB, 36GB Read - 147 GB Write - 73 GB, 36 GB Write - 147 GB Typical (ms) 6.6 6.7 6.9 7.0 Max (ms) 6.9 6.9 7.5 7.7 Full stroke seek is measured as the average of 1,000 full stroke seeks with a random head switch from both directions (inward and outward). 4.5.1.3 Average latency Table 8: Latency time Rotation 15,000 RPM Time for a revolution (ms) 4.0 Average latency (ms) 2.0 Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification 12
4.5.1.2 Full stroke seek time Table 7: Full stroke seek time Function Read - 73 GB, 36GB Read - 147 GB Write - 73 GB, 36 GB Write - 147 GB Typical (ms) 6.6 6.7 6.9 7.0 Max (ms) 6.9 6.9 7.5 7.7 Full stroke seek is measured as the average of 1,000 full stroke seeks with a random head switch from both directions (inward and outward). 4.5.1.3 Average latency Table 8: Latency time Rotation 15,000 RPM Time for a revolution (ms) 4.0 Average latency (ms) 2.0 Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification 12
Specifications
Page 141
...xxh (LSB) Number of heads xxh Starting Cylinder Write Precompensation = 0 00h 00h (LSB) Starting Cylinder Reduced Write Current = 0 00h 00h LSB) Drive Step Rate = 0 (Not used) 00h (LSB) 00h Landing Zone Cylinder = 0 (Not used) 00h 00h (LSB) RESERVED = 0 RPL...= 0 (Not used) 00h RESERVED = 0 00h Medium Rotation Rate in RPM 3Ah (LSB) 98h Reserved = 0 00h The rigid disk drive geometric page specifies various parameters for the drive. • RPL = 0, Indicates that the drive does not support spindle synchronization. Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification 123
...xxh (LSB) Number of heads xxh Starting Cylinder Write Precompensation = 0 00h 00h (LSB) Starting Cylinder Reduced Write Current = 0 00h 00h LSB) Drive Step Rate = 0 (Not used) 00h (LSB) 00h Landing Zone Cylinder = 0 (Not used) 00h 00h (LSB) RESERVED = 0 RPL...= 0 (Not used) 00h RESERVED = 0 00h Medium Rotation Rate in RPM 3Ah (LSB) 98h Reserved = 0 00h The rigid disk drive geometric page specifies various parameters for the drive. • RPL = 0, Indicates that the drive does not support spindle synchronization. Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification 123