User manual SEAGATE ATLAS 10K III

[. . . ] /CZVQT #VNCU - +++ 2TQ. WEV /CPWCN /CZVQT #VNCU - +++ 2TQ. WEV /CPWCN GP W, © 2002 Maxtor Corporation. Printed in U. S. A. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein ­ which will be incorporated in revised editions of the publication. Maxtor may make changes or improvements in the product(s) described in this publication at any time and without notice. countries. [. . . ] This parameter affects only queued commands. Some host operating systems support tagged command queuing which allows for multiple requests to be resident in the disk drive simultaneously. The disk drive can then re-order execution of the requests to improve throughput. For systems in which minimum completion time of a request is more important than throughput, MaxSkip can be reduced. Proprietary Information This field specifies the minimum number of blocks ready before starting data transfer. This field is used to reserve x amount of slots from the total resources within the disk drive for incoming commands. Once the remaining slots are full, up to the queue depth of the disk drive, subsequent commands will be accepted but placed on a disk drive internal pending list. As the disk drive completes the active commands, freeing up internal resources (SMBs), the pending commands are activated. This field is used to specify the RPL offset to sector boundary. R WU VQP UGQF G XKT F UK J6 P Q K V C \K P Q T J E P [ U G N F P K R U V T Q R R W U V Q P U G Q F G X K T F U K J 6 MaxSkip 5 Vendor Specific Minimum Block Threshold Maximum Slots to be Reserved --1 0 SSSO EAMNR Spindle Sync Check Interval Command Timeout Limit Command Timeout Limit Response Time 0 0 Enable Auto Master Negotiation if RPL Mode = 0. P QKVC\K PQT JEP [ U GNF PKR U VT QR 0 The value of this field specifies the time, in minutes, of the interval between spindle synchronization status checks. If this value is 0, the spindle is checked at five-minute intervals. If the value is set to 60 or greater, the spindle is checked at 60-minute intervals. The value of this field specifies the timeout limit in 100 millisecond units. The default value of 60 specifies a command timeout limit of 6 seconds The value of this field specifies how long, in 100 millisecond units, before the Command Timeout Limit abort processing should commence. This is intended to compensate for abort processing time. GN F PKR U VT QR RW U V Q P UGQ F G XKT F UK J6 P QK V C \ K P Q T J E P [ U 60 10 P QK V RK T E U G & VN W C H G & FNGK( Maxtor Atlas 10K III 5-71 . n o i t ai t o g e n t x e n e ht t a e d a m s i t p m e t t a r e ht o n a dna , detroper era srorre on , ton fI . dilav llits si rotaitini taht sa gnol sa r of os s nia mer dna de tav itca s i PI A , o s fI . egasse m n oit ai toge n er it ne e ht r o f t s o h e h t m o rf a t a d PI A d i l a v d e v i e c e r t i f i e e s o t k c e h c l l i w e v ir d e h T . a t a d P I A dil a v ht i w ) R P P r o , R T D W , R T D S ( e g a s s e m n oit ait o g e n a d n e S . 0 s i tlua feD . s evles me ht rof siht tes tsum PIA ni etapicitrap ot tnaw taht srotaitini lla os , ti stceles r o ti ses ne s ta h t DI r o tai ti ni eu q i n u hca e ro f yl e uqi nu d en iat nia m si tib s i h T . H C A E r o f t es s i ) 2 t i b , 0 1 e t y b ( " d e l b a n E g n i kc e h C P I A " er us e k a M . 0 si tluafeD . deraelc si )3 tib , 01 etyb( "delbasiD noitareneG PIA" erus ekaM . 1 2+ # P QK V E G V Q T 2 P QK V C O T Q H P + U W Q P Q T J E P [ U # To start AIP: SCSI Description 5-72 Maxtor Atlas 10K III SCSI Description 0 1 Operation Code (55h) Reserved PF Reserved Parameter List Length Control Reserved SP 2-6 7-8 9 Mode Parameter Header (10-Byte)-Data Format (MSB) Mode Data Length (LSB) Medium Type Device-Specific Parameter Reserved (MSB) Block Descriptor Length (LSB) 0-1 2 3 4-5 6-7 Mode Parameter Block Descriptor-Data Format (MSB) Number of Blocks (LSB) Density Code (MSB) Block Length (LSB) 0-3 4 5-7 Maxtor Atlas 10K III 5-73 J FPCOOQ% 6%'. '5 '&1/ The MODE SELECT (10) command allows the initiator to modify certain mode pages and thereby control some of the drive's operational characteristics. Refer to MODE SELECT (6) for additional descriptions. See Table 5-85 for the data format of the MODE SELECT (10) Command Descriptor Block. [. . . ] STEPPER ­ A type of motor that moves in discrete steps with each electrical pulse. Stepper were originally the most common type of actuator engine, since they can be geared to advance a read/write head one track per step. However, they are not as fast, reliable, or durable as the voice coil actuators found in Maxtor disk drives. (See also voice coil. ) SUBSTRATE ­ The material underneath the magnetic coating of a disk. [. . . ]