Seagate ST318418N SCSI Hard Disk Drive

Seagate Part #/MPN: ST318418N

DiscTech Item #: SGT-ST318418N-NP-OE

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Enterprise Grade

Capacity: 18GB

Speed: 7,200RPM

Interface Types: SCSI 50pin

Form Factor: 3.5inx1.0in LFF Hard Drive

Sector Size: 512 / 512e

Sustained Throughput: 32.3 - 52.2

Average Seek Time: 4.17

Electrical Interface: SCSI Ultra - 20MBps 8-bit

On-Board Cache: 2MB

Seagate Barracuda 36ES2 18GB 7.2K U160 50pin SE SCSI Hard Drive ST318418N - New Pull

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, network servers, mainframes, and supercomputers.

• 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

• Programmable sector reallocation scheme

• Flawed sector reallocation at format time

• Programmable auto write and read reallocation

• Reallocation of defects on command (post format)

• Enhanced ECC maximum burst correction length of 240 bits with a guaranteed burst correction length of

233 bits.

• Sealed head and disc assembly

• No preventative maintenance or adjustment required

• Dedicated head landing zone

• Embedded servo design

• Self diagnostics performed when power is applied to the drive

• 1:1 Interleave

• Zoned bit recording (ZBR)

• Vertical, horizontal, or top down mounting

• Dynamic spindle brake

• 2,048 kbyte data buffer

• Drive Self Test (DST)

SEAGATE TECHNOLOGY LLC 1-800-SEAGATE (C)opyright 2002 ST-318418N Ultra SCSI (Barracuda 36ES2) ÉÍÍÍÍÍÍÍÍÍÍÍ» º REAR VIEW º (ST-318418N) ÈÍÍÍÍÍÍÍÍÍÍͼ 50 pin I/O Cable Connection ³ J1ÕÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ1¸ /ÄÄÄÄÄÄÄÄÄ\ TOP (HDA) ͵:::::::::::::::::::::::::Æͳ 0 0 0 0 ³ÍÍ ÔÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ; ÀÄ5ÄGÄGÄ12Ù BOTTOM ÉÍÍÍÍÍÍÍÍÍÍÍÍ» º FRONT VIEW º (ST-318418N) ÈÍÍÍÍÍÍÍÍÍÍÍͼ ÚÄÄ´Reserved. Shipped with cover installed. ³ ÀDo not remove. Do not install jumpers TOP (HDA) ÕØÍÍ͸ 1 ÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵::::³::::::ÆÍÍ BOTTOM ÔÍÍÍ;³³³³³2 J2 87654321 J6 ³³³³³À ID 1 :::::::: ³³³³ÀÄ ID 2 ³³³³³³³³ ³³³ÀÄÄ ID 4 Enable T-Res Ù³³³³³³³ ³³ÀÄÄÄ Reserved Start Delay ÄÙ³³³³³³ ³ÀÄÄÄÄ Reserved (pin-10 ground) (12 secs * ID) ³³³³³³ ÀÄÄÄÄÄ Remote LED (pin-11 +5v) Motor Start ÄÄÙ³³³³³ Write Protect ÄÄÄÙ³³³³ Parity Disable ÄÄÄÄÙ³³³ Reserved ÄÄÄÄÄÙ³³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÁÄÄÄÄÄÄÄ¿ ³ Termination Power-source Table ³ ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ 2 1 2 1 2 1 ³ ³ A Drive Supplies Bus ÖÄ· ÖÄ· ³ ³ B Drive Supplies Own øºøº ºøºø ÖøÄø· ³ ³ C Bus Supplies Drive øÓø½ Óø½ø ÓøÄø½ ³ ³ A+B is valid A B C ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄDefaultÄÄÄÄÄÄÄÄÄÙ ST-318418N UNFORMATTED CAPACITY (GB) ________________ FORMATTED CAPACITY (GB) __________________19.923 AVERAGE SECTORS PER TRACK ________________748 rounded down ACTUATOR TYPE ____________________________ROTARY VOICE COIL TRACKS ___________________________________52,000 CYLINDERS ________________________________26,000 user HEADS ______PHYSICAL______________________2 DISCS (3.5 in) ___________________________1 MEDIA TYPE _______________________________THIN FILM/GMR RECORDING METHOD _________________________PRML 16/17 EPR4 INTERNAL TRANSFER RATE (mbits/sec)________434 to 500 INTERNAL FORMATTED TRANSFER RATE (MB/sec)_32.3 to 52.2 EXTERNAL TRANSFER RATE (mbyte/sec) _______20 Sync SPINDLE SPEED (RPM) ______________________7,200 AVERAGE LATENCY (mSEC) ___________________4.17 BUFFER ___________________________________2048KB Read Look-Ahead, Adaptive, Multi-Segmented Cache INTERFACE ________________________________Ultra SCSI ASA II, SCAM level 2 (1 default) BYTES PER TRACK __________________________401 Kbytes avg SECTORS PER DRIVE ________________________38,914,048 TPI (TRACKS PER INCH) ____________________58,480 BPI (PEAK KBITS PER INCH) ________________480 AVERAGE ACCESS (ms read/write)____________8.5/9.3 Drive level without controller overhead4 SINGLE TRACK SEEK (ms read/write) ________0.6/1.0 MAX FULL SEEK (ms read/write) ____________10.0/10.7 MTBF (power-on hours) ____________________800,000 SHOCK (G's, 11/2/.5 ms): operating (Read/Write) __________/63/ abnormal ________________________ nonoperating (single event) _____/350/ ACOUSTICS (Bels typical) ________Idle ____2.0 Max ____ POWER DISSIPATION (watts/BTUs) Active ____/ Idle ______8.0/27.3 POWER REQUIREMENTS: +12V START-UP (amps) _2.05 +12V TYPICAL (amps) __0.31 idle +5V START-UP (amps) __0.83 +5V TYPICAL (amps) ___0.78 idle IDLE (watts) _________ LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________0 or NONE Physical: Height (inches/mm): 1.0/25.4 Width (inches/mm): 4.00/101.6 Depth (inches/mm): 5.75/146 Weight (lbs/kg): 1.2/0.54 Already low-level formatted at the factory with x spare sectors at the end of each x cylinder region. ZBR = Zone Bit Recording = Variable sectors per track Seagate reserves the right to change, without notice, product offerings or specifications. (09/27/2002)

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Weight: 1.8 lb

Warranty: 1 Year DiscTech

New Pull

Condition Levels Explained

The product has been mounted in a brand new system (e.g. server), then removed from the system, before entering service. These products may have some hours of usage due to system build time / burn-in / testing etc. New Pulls are guaranteed to have at least 95% (often 99%) of their service life remaining , they may show signs of being physically mounted and dismounted. All handling is performed by trained technicians, taking full ESD precautions.

1 Year DiscTech Warranty

Product Warranties Explained

The product has a DiscTech warranty for the time period specified. View our limited warranty