Seagate ST318404LW SCSI Hard Drives

Seagate Cheetah 18XL 18GB 10K U160 68pin SCSI Hard Drive ST318404LW - Brand New OEM

Standard features

The Cheetah 18XL 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
• 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
• 4,096 kbyte data buffer
• Hot plug compatibility (Section 9.6.4.2 lists proper host connector needed) for “LC” model drives
• Drive Self Test (DST)

ST-318404LW UNFORMATTED CAPACITY (GB) ________________ FORMATTED CAPACITY (GB) __________________18.351 AVERAGE SECTORS PER TRACK ________________415 rounded down ACTUATOR TYPE ____________________________ROTARY VOICE COIL TRACKS ___________________________________86,304 CYLINDERS ________________________________14,384 user HEADS ______PHYSICAL______________________6 DISCS (3.5 in) ___________________________3 MEDIA TYPE _______________________________THIN FILM/GMR RECORDING METHOD _________________________PRML 16/17 EPR4 INTERNAL TRANSFER RATE (mbits/sec)________285 to 424 INTERNAL FORMATTED TRANSFER RATE (MB/sec)_26 to 40 EXTERNAL TRANSFER RATE (mbyte/sec) _______40 Sync Low Voltage Differential(LVD) _______80/160 Sync SPINDLE SPEED (RPM) ______________________10,033 AVERAGE LATENCY (mSEC) ___________________2.99 BUFFER (/optional) _______________________4MB/16MB Read Look-Ahead, Adaptive, Multi-Segmented Cache INTERFACE ________________________________Ultra SCSI Wide Low Voltage Differential __________Ultra3-SCSI Wide ASA II, SCAM level 2 (1 default) BYTES PER TRACK __________________________203,008 avg SECTORS PER DRIVE ________________________35,843,669 TPI (TRACKS PER INCH) ____________________18,145 BPI (PEAK KBITS PER INCH) ________________339 AVERAGE ACCESS (ms read/write)____________5.2/5.8 Drive level without controller overhead SINGLE TRACK SEEK (ms read/write) ________0.6/0.9 MAX FULL SEEK (ms read/write) ____________10.0/11.0 MTBF (power-on hours) ____________________1,200,000 SHOCK (G's, 11/2/.5 ms): operating (Read/Write) __________15 abnormal ________________________15 nonoperating ____________________150/250/ ACOUSTICS (Bels typical) ________Idle ____3.8 Max ____ POWER DISSIPATION (watts/BTUs) Active ____/ Idle ______8.5/29.0 POWER REQUIREMENTS: +12V START-UP (amps) _1.7 +12V TYPICAL (amps) __0.40 idle +5V START-UP (amps) __0.7 +5V TYPICAL (amps) ___0.70 idle IDLE (watts) _________9 IBM AT DRIVE TYPE ________________________0 or NONE Physical: Height (inches/mm): 1.02/26.13 Width (inches/mm): 4.01/101.98 Depth (inches/mm): 5.77/146.68 Weight (lbs/kg): 1.5/0.680 

Alternate MPNs: 9N9002-002

Weight: 1.8 lb

Warranty: 1 Year DiscTech

Brand New

1 Year DiscTech Warranty