Cheetah 15K.4 SCSI Product Manual
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... 17 5.1.2 Unrecoverable Errors 17 5.1.3 Seek errors 18 5.2 Reliability and service 18 5.2.1 Mean time between failure 18 5.2.2 Preventive maintenance 18 5.2.3 Hot plugging Cheetah 15K.4 SCSI disc drives 18 5.2.4 S.M.A.R.T 19 5.2.5 Thermal monitor 20 5.2.6 Drive Self Test (DST 21 5.2.7 Product warranty 23 6.0 Physical/electrical specifications 25 6.1 AC power requirements 25 6.2 DC power requirements 25 6.2.1 Conducted noise immunity...
... 17 5.1.2 Unrecoverable Errors 17 5.1.3 Seek errors 18 5.2 Reliability and service 18 5.2.1 Mean time between failure 18 5.2.2 Preventive maintenance 18 5.2.3 Hot plugging Cheetah 15K.4 SCSI disc drives 18 5.2.4 S.M.A.R.T 19 5.2.5 Thermal monitor 20 5.2.6 Drive Self Test (DST 21 5.2.7 Product warranty 23 6.0 Physical/electrical specifications 25 6.1 AC power requirements 25 6.2 DC power requirements 25 6.2.1 Conducted noise immunity...
Cheetah 15K.4 SCSI Product Manual
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... Corrosive environment 37 6.4.7 Acoustics 38 6.4.8 Electromagnetic susceptibility 38 6.5 Mechanical specifications 38 7.0 Defect and error management 41 7.1 Drive internal defects 41 7.2 Drive error recovery procedures 41 7.3 SCSI systems errors 43 7.4 Background Media Scan 43 7.4.1 Media Pre-Scan 44 8.0 Installation 45... description 77 9.7.1 Multimode-SE and LVD alternatives 77 9.8 Terminator requirements 80 9.9 Terminator power 80 9.10 Disc drive SCSI timing 81 9.11 Drive activity LED 83 10.0 Seagate Technology support services 85 ii Cheetah 15K.4 SCSI Product Manual, Rev.
... Corrosive environment 37 6.4.7 Acoustics 38 6.4.8 Electromagnetic susceptibility 38 6.5 Mechanical specifications 38 7.0 Defect and error management 41 7.1 Drive internal defects 41 7.2 Drive error recovery procedures 41 7.3 SCSI systems errors 43 7.4 Background Media Scan 43 7.4.1 Media Pre-Scan 44 8.0 Installation 45... description 77 9.7.1 Multimode-SE and LVD alternatives 77 9.8 Terminator requirements 80 9.9 Terminator power 80 9.10 Disc drive SCSI timing 81 9.11 Drive activity LED 83 10.0 Seagate Technology support services 85 ii Cheetah 15K.4 SCSI Product Manual, Rev.
Cheetah 15K.4 SCSI Product Manual
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... 11. Figure 16. Figure 24. Cheetah 15K.4 SCSI family drive (ST3146854LC shown 1 Typical ST3146854 drive +12V LVD current profile 28 Typical ST3146854 drive +5 V LVD current profile 28 Typical ST373454 drive +12V LVD current profile 29 Typical ST373454 drive +5V LVD current profile 29 Typical ST336754 drive +12V LVD current profile 30 Typical ST336754 drive +5V LVD current profile 30 ST3146854...
... 11. Figure 16. Figure 24. Cheetah 15K.4 SCSI family drive (ST3146854LC shown 1 Typical ST3146854 drive +12V LVD current profile 28 Typical ST3146854 drive +5 V LVD current profile 28 Typical ST373454 drive +12V LVD current profile 29 Typical ST373454 drive +5V LVD current profile 29 Typical ST336754 drive +12V LVD current profile 30 Typical ST336754 drive +5V LVD current profile 30 ST3146854...
Cheetah 15K.4 SCSI Product Manual
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... product manual the reference to Cheetah 15K.4 SCSI models is referred to as "the drive" unless references to individual models are necessary. Cheetah 15K.4 SCSI family drive (ST3146854LC shown) Cheetah 15K.4 SCSI Product Manual, Rev. The SCSI Interface Product Manual (part number 75789509) describes general SCSI interface characteristics of Seagate drives. 1.0 Scope This manual describes Seagate® Technology LLC, Cheetah® 15K.4 SCSI disc...
... product manual the reference to Cheetah 15K.4 SCSI models is referred to as "the drive" unless references to individual models are necessary. Cheetah 15K.4 SCSI family drive (ST3146854LC shown) Cheetah 15K.4 SCSI Product Manual, Rev. The SCSI Interface Product Manual (part number 75789509) describes general SCSI interface characteristics of Seagate drives. 1.0 Scope This manual describes Seagate® Technology LLC, Cheetah® 15K.4 SCSI disc...
Cheetah 15K.4 SCSI Product Manual
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... and installation into a suitable enclosure prior to use. Mounting by bottom holes must meet any susceptibility performance requirements. The Cheetah 15K.4 SCSI disc drive is a UL recognized component per UL1950, CSA certified to CSA C22.2 No. 950-95, and VDE certified to VDE... Standards The Cheetah 15K.4 SCSI family complies with applicable industry and governmental regulations. See Table 12, DC power requirements. The drive depends upon its host equipment to provide adequate power and environment in order to achieve optimum performance and compliance with Seagate standards as ...
... and installation into a suitable enclosure prior to use. Mounting by bottom holes must meet any susceptibility performance requirements. The Cheetah 15K.4 SCSI disc drive is a UL recognized component per UL1950, CSA certified to CSA C22.2 No. 950-95, and VDE certified to VDE... Standards The Cheetah 15K.4 SCSI family complies with applicable industry and governmental regulations. See Table 12, DC power requirements. The drive depends upon its host equipment to provide adequate power and environment in order to achieve optimum performance and compliance with Seagate standards as ...
Cheetah 15K.4 SCSI Product Manual
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...EMC) Framework requirements of the Taiwanese Bureau of Standards, Metrology, and Inspection (BSMI). 4 Cheetah 15K.4 SCSI Product Manual, Rev. Taiwanese BSMI If this model has the C-Tick Marking it...platforms. The system configurations include: • Typical current use microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse ...represents the most popular characteristics for the European Union If this Seagate model complies to the directives/standard(s) for Class B products. D Korean MIC If...
...EMC) Framework requirements of the Taiwanese Bureau of Standards, Metrology, and Inspection (BSMI). 4 Cheetah 15K.4 SCSI Product Manual, Rev. Taiwanese BSMI If this model has the C-Tick Marking it...platforms. The system configurations include: • Typical current use microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse ...represents the most popular characteristics for the European Union If this Seagate model complies to the directives/standard(s) for Class B products. D Korean MIC If...
Cheetah 15K.4 SCSI Product Manual
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2.3 Reference documents Cheetah 15K.4 SCSI Installation Guide Seagate P/N 100220463 Safety and Regulatory Agency Specifications Seagate P/N 75789512 SCSI Interface Product Manual Seagate P/N 75789509 Applicable ANSI small computer system interface (SCSI) document ...Specification Seagate P/N 30190-001 (under 100 lb.) Package Test Specification Seagate P/N 30191-001 (over 100 lb.) Specification, Acoustic Test Requirements, and Procedures Seagate P/N 30553-001 In case of conflict between this document and any referenced document, this document takes precedence. D 5 Cheetah 15K.4 ...
2.3 Reference documents Cheetah 15K.4 SCSI Installation Guide Seagate P/N 100220463 Safety and Regulatory Agency Specifications Seagate P/N 75789512 SCSI Interface Product Manual Seagate P/N 75789509 Applicable ANSI small computer system interface (SCSI) document ...Specification Seagate P/N 30190-001 (under 100 lb.) Package Test Specification Seagate P/N 30191-001 (over 100 lb.) Specification, Acoustic Test Requirements, and Procedures Seagate P/N 30553-001 In case of conflict between this document and any referenced document, this document takes precedence. D 5 Cheetah 15K.4 ...
Cheetah 15K.4 SCSI Product Manual
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...only if your warranty. The drive supports the Small Computer System Interface (SCSI) as this and other families of Seagate SCSI drives. Cheetah 15K.4 SCSI Product Manual, Rev. D 7 Table 1: Drive model number vs. differentiating features Model number ST3146854LW ST373454LW ST336754LW ST3146854LC ST373454LC ST336754LC Number of active heads...the extent described in this manual (volume 1), which defines the product performance characteristics of the Cheetah 15K.4 SCSI family of drives, and the SCSI Interface Product Manual (volume 2), part number 75789509, which describes the general...
...only if your warranty. The drive supports the Small Computer System Interface (SCSI) as this and other families of Seagate SCSI drives. Cheetah 15K.4 SCSI Product Manual, Rev. D 7 Table 1: Drive model number vs. differentiating features Model number ST3146854LW ST373454LW ST336754LW ST3146854LC ST373454LC ST336754LC Number of active heads...the extent described in this manual (volume 1), which defines the product performance characteristics of the Cheetah 15K.4 SCSI family of drives, and the SCSI Interface Product Manual (volume 2), part number 75789509, which describes the general...
Cheetah 15K.4 SCSI Product Manual
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... • Asynchronous and synchronous data transfer protocol • Firmware downloadable via SCSI interface • Selectable even byte sector sizes from movement during shipping and handling. Cheetah 15K.4 SCSI drives use a dedicated landing zone at format time • Programmable auto write and read reallocation • Reallocation of defects on command (post format) • ECC...
... • Asynchronous and synchronous data transfer protocol • Firmware downloadable via SCSI interface • Selectable even byte sector sizes from movement during shipping and handling. Cheetah 15K.4 SCSI drives use a dedicated landing zone at format time • Programmable auto write and read reallocation • Reallocation of defects on command (post format) • ECC...
Cheetah 15K.4 SCSI Product Manual
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...at a given sector size, but the user must determine if the extra capacity potential is selectable at certain sector sizes that the drive shall not Cheetah 15K.4 SCSI Product Manual, Rev. Average latency = 2.0 msec • Command queuing of up to 64 commands • Background processing ...how each sector size actually formats out for this manner gives the absolute maximum capacity potential, but the excess capacity above . Seagate designs specify capacity points at format time. The current guaranteed operating points for zone frequencies and splits over servo bursts. Refer ...
...at a given sector size, but the user must determine if the extra capacity potential is selectable at certain sector sizes that the drive shall not Cheetah 15K.4 SCSI Product Manual, Rev. Average latency = 2.0 msec • Command queuing of up to 64 commands • Background processing ...how each sector size actually formats out for this manner gives the absolute maximum capacity potential, but the excess capacity above . Seagate designs specify capacity points at format time. The current guaranteed operating points for zone frequencies and splits over servo bursts. Refer ...
Cheetah 15K.4 SCSI Product Manual
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... facility before shipping. The factory also ships with the drive a small bag of blocks field. Users planning single unit distribution should specify this option. • The Cheetah 15K.4 Installation Guide, part number 100220463, is usually included with the Cheetah 15K.4 Installation Guide, part number 100220463, and the Safety ...(not an exhaustive list of LBAs is normally shipped in the field. • Single unit shipping pack. 10 Cheetah 15K.4 SCSI Product Manual, Rev. The drive is rounded down to the value in the block descriptor number of jumper plugs used for the J2, J5, and...
... facility before shipping. The factory also ships with the drive a small bag of blocks field. Users planning single unit distribution should specify this option. • The Cheetah 15K.4 Installation Guide, part number 100220463, is usually included with the Cheetah 15K.4 Installation Guide, part number 100220463, and the Safety ...(not an exhaustive list of LBAs is normally shipped in the field. • Single unit shipping pack. 10 Cheetah 15K.4 SCSI Product Manual, Rev. The drive is rounded down to the value in the block descriptor number of jumper plugs used for the J2, J5, and...
Cheetah 15K.4 SCSI Product Manual
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... and to all models of the Cheetah 15K.4 SCSI family unless otherwise specified. 4.0 Performance characteristics 4.1 Internal drive characteristics (transparent to user) Drive capacity Read/write heads Bytes/track Bytes/surface Tracks/surface (total) Tracks/inch Peak bits/inch Internal data rate Disc rotational speed Average rotational latency ST3146854 146.8 8 471,916 18,351 50,864...
... and to all models of the Cheetah 15K.4 SCSI family unless otherwise specified. 4.0 Performance characteristics 4.1 Internal drive characteristics (transparent to user) Drive capacity Read/write heads Bytes/track Bytes/surface Tracks/surface (total) Tracks/inch Peak bits/inch Internal data rate Disc rotational speed Average rotational latency ST3146854 146.8 8 471,916 18,351 50,864...
Cheetah 15K.4 SCSI Product Manual
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...time Not including controller overhead (msec)1,2 Read Write Average Typical 3.5 4.0 Single Track Typical 0.2 0.4 Full Stroke Typical 7.4 7.9 1. Typical access times are measured under nominal conditions of drives. 2. If n (number of bytes per sector. Access to data = access time + latency time. 4.2.2 Format command execution time (minutes) [1] Maximum (with verify) Maximum (no...) interface mode 5.0 to 320 MBytes/sec Sector Sizes: Default 512 byte user data blocks Variable 512 to the Initiator (excluding connect/disconnect). 12 Cheetah 15K.4 SCSI Product Manual, Rev.
...time Not including controller overhead (msec)1,2 Read Write Average Typical 3.5 4.0 Single Track Typical 0.2 0.4 Full Stroke Typical 7.4 7.9 1. Typical access times are measured under nominal conditions of drives. 2. If n (number of bytes per sector. Access to data = access time + latency time. 4.2.2 Format command execution time (minutes) [1] Maximum (with verify) Maximum (no...) interface mode 5.0 to 320 MBytes/sec Sector Sizes: Default 512 byte user data blocks Variable 512 to the Initiator (excluding connect/disconnect). 12 Cheetah 15K.4 SCSI Product Manual, Rev.
Cheetah 15K.4 SCSI Product Manual
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... goes directly to the medium to some buffer segment on the drive. 4.4 Prefetch/multi-segmented cache control The drive provides prefetch (read and to which may be used herein refers to the host. The drive supports a maximum of power. The drive transfers the remaining Cheetah 15K.4 SCSI Product Manual, Rev. Stop time is a simplified description of...
... goes directly to the medium to some buffer segment on the drive. 4.4 Prefetch/multi-segmented cache control The drive provides prefetch (read and to which may be used herein refers to the host. The drive supports a maximum of power. The drive transfers the remaining Cheetah 15K.4 SCSI Product Manual, Rev. Stop time is a simplified description of...
Cheetah 15K.4 SCSI Product Manual
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...reconnect specification referred to in case A. 2. If the prefetch feature is prefetched replaces 14 Cheetah 15K.4 SCSI Product Manual, Rev. The wrap-around occurs), the length of RCD. The drive fetches the requested LBs from the disc and transfers them into the cache, but before ...buffer space and segmentation is cached for immediate transfer from a previous read cache hits. The new data is used to force the drive to change unchangeable parameters (see if any segment of each segment is actually a self-contained circular storage (wrap-around capability of the...
...reconnect specification referred to in case A. 2. If the prefetch feature is prefetched replaces 14 Cheetah 15K.4 SCSI Product Manual, Rev. The wrap-around occurs), the length of RCD. The drive fetches the requested LBs from the disc and transfers them into the cache, but before ...buffer space and segmentation is cached for immediate transfer from a previous read cache hits. The new data is used to force the drive to change unchangeable parameters (see if any segment of each segment is actually a self-contained circular storage (wrap-around capability of the...
Cheetah 15K.4 SCSI Product Manual
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... not for physically contiguous blocks of data (e.g., "software interleave"). In "server mode" (PM bit = 0), the drive can limit the amount of prefetch data to the Unit Attention Parameters page (00h) of the Mode Sense command ... keeps prefetch enabled. 4.5.3 Optimizing cache performance for desktop and server applications Desktop and server applications require different drive caching operations for contiguous blocks of data, ARLA disables prefetch, but as long as needed to provide large... read look ahead" to "look -ahead) is a good thing. Cheetah 15K.4 SCSI Product Manual, Rev.
... not for physically contiguous blocks of data (e.g., "software interleave"). In "server mode" (PM bit = 0), the drive can limit the amount of prefetch data to the Unit Attention Parameters page (00h) of the Mode Sense command ... keeps prefetch enabled. 4.5.3 Optimizing cache performance for desktop and server applications Desktop and server applications require different drive caching operations for contiguous blocks of data, ARLA disables prefetch, but as long as needed to provide large... read look ahead" to "look -ahead) is a good thing. Cheetah 15K.4 SCSI Product Manual, Rev.
Cheetah 15K.4 SCSI Product Manual
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...Cheetah 15K.4 SCSI Product Manual, Rev. This includes AWRE, ARRE, full read , and using DC power as 1 error for recoverable errors occurring during a write. 5.1.2 Unrecoverable Errors Unrecoverable Data Errors (Sense Key = 03h) are treated as defined in this specification assume the following reliability specifications assume correct host/drive... and all interface timings, power supply voltages, environmental requirements and drive mounting constraints (see Section 6.2). • Errors caused by the drive, and do not require user intervention. Unrecoverable Data Errors resulting ...
...Cheetah 15K.4 SCSI Product Manual, Rev. This includes AWRE, ARRE, full read , and using DC power as 1 error for recoverable errors occurring during a write. 5.1.2 Unrecoverable Errors Unrecoverable Data Errors (Sense Key = 03h) are treated as defined in this specification assume the following reliability specifications assume correct host/drive... and all interface timings, power supply voltages, environmental requirements and drive mounting constraints (see Section 6.2). • Errors caused by the drive, and do not require user intervention. Unrecoverable Data Errors resulting ...
Cheetah 15K.4 SCSI Product Manual
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...operation. RST signal asserted continuously during removal or insertion Case 3 - Data shall be required. 5.2.3 Hot plugging Cheetah 15K.4 SCSI disc drives The ANSI SPI-4 document defines the physical requirements for removal and insertion of SCSI devices on a rolling average base for ... failure indicates that ensures the HDA case temperatures specified in Section 6.4.1 are classified as drive failures. 5.2 Reliability and service You can enhance the reliability of Cheetah 15K.4 SCSI disc drives by the state of the SCSI bus when the removal or insertion occurs. 5.1.3 Seek...
...operation. RST signal asserted continuously during removal or insertion Case 3 - Data shall be required. 5.2.3 Hot plugging Cheetah 15K.4 SCSI disc drives The ANSI SPI-4 document defines the physical requirements for removal and insertion of SCSI devices on a rolling average base for ... failure indicates that ensures the HDA case temperatures specified in Section 6.4.1 are classified as drive failures. 5.2 Reliability and service You can enhance the reliability of Cheetah 15K.4 SCSI disc drives by the state of the SCSI bus when the removal or insertion occurs. 5.1.3 Seek...