Seagate Barracuda ST318438LW user manual

User manual for the device Seagate Barracuda ST318438LW

Device: Seagate Barracuda ST318438LW
Category: Computer Drive
Manufacturer: Seagate
Size: 1.78 MB
Added : 6/9/2013
Number of pages: 96
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Summaries

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Abstracts of contents
Summary of the content on the page No. 1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Barracuda 36ES2 Family:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST336918N
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST336938LW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST318418N
. . . . . . . . . . . . . . . . . . . . . . . . .

Summary of the content on the page No. 2

Summary of the content on the page No. 3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Barracuda 36ES2 Family: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST336918N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST336938LW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST318418N . . . . . . . . . . . . . . . . . . . . . . . . .

Summary of the content on the page No. 4

© 2002 Seagate Technology LLC All rights reserved Publication number: 100182971, Rev. B May 2002 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology LLC. Barracuda, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either registered trademarks or trademarks of Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications. No part o

Summary of the content on the page No. 5

Revision status summary sheet Revision Date Writer/Engineer Sheets Affected Rev. A 01/02/2002 K. Schweiss/B. Hohn 1/1, v thru ix, 1-84. Rev. B 05/13/2002 K. Schweiss/B. Hohn Pages 29, 41 and 46. Notice. Product Manual 100182971 is Volume 1 of a two-volume document with the SCSI interface information in the SCSI Interface Product Manual, Volume 2, part number 75789509. If you need the SCSI interface information, order the SCSI Interface Product Manual, Volume 2, part number 75789509.

Summary of the content on the page No. 6

Summary of the content on the page No. 7

Barracuda 36ES2 Product Manual, Rev. B v Contents 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Applicable standards and reference documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1.1 Electromagne

Summary of the content on the page No. 8

vi Barracuda 36ES2 Product Manual, Rev. B 6.4.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 6.4.3 Effective altitude (sea level). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . .

Summary of the content on the page No. 9

Barracuda 36ES2 Product Manual, Rev. B vii List of Figures Figure 1. Barracuda 36ES2 family drive (ST336938LW shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 2. Typical ST336938/ST336918/ST318438/ST318418 drive +12 V current profile . . . . . . . . . . . . 22 Figure 3. Typical ST336938/ST336918/ST318438/ST318418 drive +5 V current profile . . . . . . . . . . . . . 23 Figure 4. ST336938/ST318438 DC current and power vs. input/output operations per second (LVD) .

Summary of the content on the page No. 10

Summary of the content on the page No. 11

Barracuda 36ES2 Product Manual, Rev. B 1 1.0 Scope ® ® This manual describes Seagate Technology LLC Barracuda 36ES2 disc drives. Barracuda 36ES2 drives support the Small Computer System Interface (SCSI) as described in the ANSI SCSI interface specifications to the extent described in this manual. The SCSI Interface Product Manual, part num- ber 75789509, describes general SCSI interface characteristics of this and other families of Seagate drives. The SCSI Interface Product Manual references inf

Summary of the content on the page No. 12

2 Barracuda 36ES2 Product Manual, Rev. B

Summary of the content on the page No. 13

Barracuda 36ES2 Product Manual, Rev. B 3 2.0 Applicable standards and reference documentation The drive has been developed as a system peripheral to the highest standards of design and construction. The drive depends upon its host equipment to provide adequate power and environment in order to achieve opti- mum performance and compliance with applicable industry and governmental regulations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise cont

Summary of the content on the page No. 14

4 Barracuda 36ES2 Product Manual, Rev. B Australian C-Tick If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZS3548 1995 and meets the Electromagnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Man- agement Agency (SMA). Korean MIC If this model has the Korean Ministry of Information and Communication (MIC) logo, it complies with paragraph 1 of Article 11 of the Electromagnetic Compatibility (EMC) Control Regulation and meets the

Summary of the content on the page No. 15

Barracuda 36ES2 Product Manual, Rev. B 5 3.0 General description Barracuda 36ES2 drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a wide SCSI Ultra160 interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, net- work servers, mainframes, and supercomputers. Ultra160 SCSI uses negotiated transfer rates. These transfer rates wi

Summary of the content on the page No. 16

6 Barracuda 36ES2 Product Manual, Rev. B 3.1 Standard features The Barracuda 36ES2 family has the following standard features:  Integrated Ultra160 SCSI controller  Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD)  16 bit I/O data bus on LW models. 8 bit I/O data bus on the N model.  Asynchronous and synchronous data transfer protocol  Firmware downloadable via SCSI interface  Selectable even-byte sector sizes from 512 to 4,096 bytes/sector  Progra

Summary of the content on the page No. 17

Barracuda 36ES2 Product Manual, Rev. B 7 3.5 Unformatted and formatted capacities Formatted capacity depends on the number of spare reallocation sectors reserved and the number of bytes per sector. The following table shows the standard OEM model capacities: Formatted data block size 512 bytes/sector [1] ST336938LW 044D53B5h (36.954 GB) [2] ST336918N 044D53B5h (36.954 GB) [2] ST318438LW 0251C800h (19.924 GB) [2] ST318418N 0251C800h (19.924 GB) [2] Notes. [1] Sector size selectable at format tim

Summary of the content on the page No. 18

8 Barracuda 36ES2 Product Manual, Rev. B 4.0 Performance characteristics 4.1 Internal drive characteristics (transparent to user) ST336938/ ST318438/ ST336918 ST318418 Drive capacity 36.954 19.924 Gbytes (formatted, rounded off) Read/write heads 2 2 Bytes/track 401 401 KBytes (average, rounded off) Bytes/surface 18.477 18.477 Mbytes (unformatted, rounded off) Tracks/surface (total) 56,332 26,000 Tracks (user accessible) Tracks/inch 58,480 58,480 TPI Peak bits/inch 480 480 KBPI Internal data r

Summary of the content on the page No. 19

Barracuda 36ES2 Product Manual, Rev. B 9 SCSI interface data transfer rate (asynchronous): Maximum instantaneous one byte wide 5.0 Mbytes/sec [4] Maximum instantaneous two bytes wide 10.0 Mbytes/sec [4] Synchronous formatted transfer rate Ultra2 SCSI Ultra160 SCSI In single-ended (SE) interface mode 5.0 to 40 Mbytes/sec 5.0 to 80 Mbytes/sec In low voltage differential (LVD) interface mode 5.0 to 80 Mbytes/sec 5.0 to 160 Mbytes/sec Sector Sizes: Default 512 byte user data blocks Variable 512 to 4

Summary of the content on the page No. 20

10 Barracuda 36ES2 Product Manual, Rev. B 4.5 Cache operation In general, 2,048 Kbytes of the physical buffer space in the drive can be used as storage space for cache oper- ations. The buffer can be divided into logical segments (Mode Select Page 08h, byte 13) from which data is read and to which data is written. The drive maintains a table of logical block disk medium addresses of the data stored in each segment of the buffer. If cache operation is enabled (RCD bit = 0 in Mode Page 08h, byte 2


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