Barracuda 18XL - ST318416N Product Family






	Seagate raises the bar for entry-level enterprise storage devices, advancing areal densities to more than 6.1 Gbytes and formatted data rates as high as 29.6 Mbytes per second. The Barracuda 18XL is the latest addition to the award winning Barracuda 7,200-RPM disc drive family. The Barracuda 18XL, the sixth-generation of the Barracuda family, offers significant performance enhancements over the current generation.
	Download PDF version of Barracuda 18XL

Models


	ST39216N ST39216W ST39226LW ST39226LC ST39236LW ST39236LC ST39236LWV ST39236LCV	ST318416N ST318416W ST318426LC ST318426LW ST318436LC ST318436LW ST318436LCV ST318436LWV

Capacity and Interface

Formatted Gbytes (512 bytes/sector)	9.2	18.4
Interface	Ultra SCSI Ultra160 SCSI Ultra2 SCSI	Ultra SCSI Ultra160 SCSI Ultra2 SCSI

Performance

Internal Transfer Rate, ZBR (Mbits/sec)	183/316	183/316
Internal Formatted Transfer Rate (Mbytes/sec)	17.2/29.6	17.2/29.6
External Transfer Rate (mbytes/sec)
Ultra 8,16 bit/Ultra2/Fibre Channel (per loop)	20 40 80 160	20 40 80 160
Track-to-track Seek Read/Write (msec)	0.6/0.8	0.6/0.8
Average Seek Read/Write (msec)	5.9/6.4	5.9/6.4
Average Latency (msec)	4.17	4.17
Spindle Speed (RPM)	7200	7200

Configuration/Organization

Discs/Heads	2/3	3/6
Sectors per Drive (512 bytes per sector)	17942584	35885168
Cylinders	14384	14384
Recording Method	EPRML	EPRML

Reliability/Data Integrity

S.M.A.R.T. capable	Yes	Yes
Recoverable Read Errors per Bits Read	10 per 10¹²	10 per 10¹²
Nonrecoverable Read Errors per Bits Read	1 per 10¹⁵	1 per 10¹⁵
Seek Errors (per seek)	10 per 10⁸	10 per 10⁸
Service Life/Limited Warranty (years)	5/5	5/5

Power Requirements

+12 VDC +/-5% (amps typ operating)	0.6	0.6
+5 VDC +/-5 % (amps typ operating)
Ultra SCSI, Ultra2 SCSI [FC]	0.8	0.8
Power (Idle watts)
Ultra SCSI/Ultra2 SCSI [FC]	6.5	6.8

Environmental

Idle Acoustics (max Bels)	3.4	3.4
Operating Temperature (°C)	5 to 55	5 to 55
Nonoperating Temperature (°C)	70 to -40	70 to -40
Operating Shock (Gs) @ 11 msec	10	10
NonOperating Shock (Gs) @ 2 msec	250	250
Operating Vibration (Gs @ 5-350 Hz)	1.8	1.8
Nonoperating Vibration (<350Hx)	2	2

Physical

Height (mm)	25.4	25.4
Width (mm)	101.6	101.6
Depth (mm)	146.1	146.1
Weight (kg)	0.6	0.6

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