Product Manual
Page 20
... sparing zone reallocation scheme.) Negligible Overhead time for head switch (512 byte sectors) in sequential mode Overhead time for one track cylinder switch in sequential mode Average rotational latency 0.8 msec 1.2 msec (typical) 2.99 msec Notes for Section 4.2. [1] Execution time ...measured from the standpoint that in each is disabled (i.e. 10 Cheetah 9LP Product Manual, Rev. During spin up to ready time the drive responds to the Initiator (excluding connect/disconnect). [2] Typical access times are measured under nominal conditions of...
... sparing zone reallocation scheme.) Negligible Overhead time for head switch (512 byte sectors) in sequential mode Overhead time for one track cylinder switch in sequential mode Average rotational latency 0.8 msec 1.2 msec (typical) 2.99 msec Notes for Section 4.2. [1] Execution time ...measured from the standpoint that in each is disabled (i.e. 10 Cheetah 9LP Product Manual, Rev. During spin up to ready time the drive responds to the Initiator (excluding connect/disconnect). [2] Typical access times are measured under nominal conditions of...
Product Manual
Page 22
... can limit the amount of data, ARLA keeps prefetch enabled. ARLA disables prefetch when it senses that a prefetch hit will not likely occur. 12 Cheetah 9LP Product Manual, Rev. Prefetch is not using Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit = 0 ...even if two consecutive read operations request contiguous blocks of prefetch data to the medium. DRA bit). During a prefetch operation, the drive crosses a cylinder boundary to the host on the disc immediately beyond that request those logical blocks (this is true even if cache operation is set ...
... can limit the amount of data, ARLA keeps prefetch enabled. ARLA disables prefetch when it senses that a prefetch hit will not likely occur. 12 Cheetah 9LP Product Manual, Rev. Prefetch is not using Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit = 0 ...even if two consecutive read operations request contiguous blocks of prefetch data to the medium. DRA bit). During a prefetch operation, the drive crosses a cylinder boundary to the host on the disc immediately beyond that request those logical blocks (this is true even if cache operation is set ...
Product Manual
Page 73
...applied N/A On until spinup is initially processed Spun up Format with Immediate option on each cylinder boundary C 63 Table 18: Disc drive SCSI timing (Continued) These values are not current Cheetah 9LP values, but are listed for a description of power Spun up Stop Unit On ... is determined by removal of DC power N/A Off due to absense of synchronous data transfer operation. 9.11 Drive activity LED The following table provides drive activity LED status. Cheetah 9LP Product Manual, Rev. Description Next CDB Byte Access (Byte 10 of the SCSI Interface Product Manual, ...
...applied N/A On until spinup is initially processed Spun up Format with Immediate option on each cylinder boundary C 63 Table 18: Disc drive SCSI timing (Continued) These values are not current Cheetah 9LP values, but are listed for a description of power Spun up Stop Unit On ... is determined by removal of DC power N/A Off due to absense of synchronous data transfer operation. 9.11 Drive activity LED The following table provides drive activity LED status. Cheetah 9LP Product Manual, Rev. Description Next CDB Byte Access (Byte 10 of the SCSI Interface Product Manual, ...
Product Manual
Page 79
Cheetah 9LP Product Manual, Rev. C Index Symbols +5 and +12 volt supplies 19...operation 10 cache operation hit 12 cache segment 11 caching write data 11 Canadian Department of Communications 3 capacities 8 capacity, drive, programmable 8 case temperature 22 CE Marking 3 change definition command 40 changeable bit 45 changeable value 44 check condition 44...36 C-Tick Marking 3 current 20 current limiting 20 current profile 20, 21 current requirements 19 current value 44, 45 cylinder boundary 12 D daisy-chain 20, 50, 52 80 conductor 51 data correction 13 data transfer period 48 data transfer protocol...
Cheetah 9LP Product Manual, Rev. C Index Symbols +5 and +12 volt supplies 19...operation 10 cache operation hit 12 cache segment 11 caching write data 11 Canadian Department of Communications 3 capacities 8 capacity, drive, programmable 8 case temperature 22 CE Marking 3 change definition command 40 changeable bit 45 changeable value 44 check condition 44...36 C-Tick Marking 3 current 20 current limiting 20 current profile 20, 21 current requirements 19 current value 44, 45 cylinder boundary 12 D daisy-chain 20, 50, 52 80 conductor 51 data correction 13 data transfer period 48 data transfer protocol...