Seagate Part #/MPN: ST318251FC
DiscTech Item #: SGT-ST318251FC-RF-OE
- RefurbishedCondition Levels Explained
These products have had NO problems or failures, they merely have some usage. The product has been professionally returned to excellent condition. These items have been fully tested, formatted (if appropriate) &repackaged. Hard drives are fully vetted for surface defects and wear, only healthy disks are approved for resale to our customers. Please see our refurbishing process for more details. Watch a video about our refurbishing process
- Warranty:1 Year DiscTechProduct Warranties Explained
The product has a DiscTech warranty for the time period specified. View our limited warranty
- Special Order - Ships in 5-10 business daysSpecial Order - Ships in 5-10 business days
This item has a lead time for fulfilment (as listed), this is approximate. Your credit card will be authorized in full on the day of ordering; it will not be charged until the day of shipment.
Enterprise Grade
Capacity: 18GB
Speed: 10,000RPM
Interface Types: Fibre Channel - Internal - Arbitrated Loop ASA II
Form Factor: 3.5inx1.0in LFF Hard Drive
Sector Size: 512 / 512e
Sustained Throughput: 193-300
Average Seek Time: 5.4/6.0
Electrical Interface: FC-AL - 2Gbps
Seagate Cheetah 18LP FC ST318251FC / 9P2004-001 18GB 3.5" FC-AL HDD - Refurbished
Cheetah 18LP FC General Description
CheetahTM 18LP FC drives combine dual stripe magneto resistive (DSMR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a Fibre Channel interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.
Cheetah 18LP FC drives are random access storage devices designed to support the Fibre Channel Arbitrated Loop (FC-AL) and SCSI Fibre Channel Protocols. Cheetah 18LP FC drives are classified as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard.
Cheetah 18LP FC drives have the following standard features:
- Integrated dual port FC-AL controller
- Concurrent dual port transfers
- Support for FC arbitrated loop, private and public attachment
- Differential copper FC drivers and receivers
- Downloadable firmware using the FC-AL interface
- Supports SCSI enclosure services via interface connector
- 128-deep task set (queue)
- Supports up to 32 initiators
- Drive selection ID and configuration options are set on the FC-AL backpanel or through interface commands. Jumpers are not used on the drive.
- Supports SCSI Enclosure Services through the interface connector
- Fibre Channel worldwide name uniquely identifies the drive and each port
- User-selectable logical block size (512 to 4,096 bytes per logical block)
- Selectable frame sizes from 128 to 2,112 bytes
- Industry standard 3.5-inch low profile form factor dimensions
- Programmable logical block reallocation scheme
- Flawed logical block reallocation at format time
- Programmable auto write and read reallocation
- Reed-Solomon error correction code
- Sealed head and disc assembly (HDA)
- No preventive maintenance or adjustments required
- Dedicated head landing zone
- Automatic shipping lock
- Embedded Grey Code track address to eliminate seek errors
- Self-diagnostics performed at power on
- 1:1 interleave
- Zone bit recording (ZBR)
- Vertical, horizontal, or top down mounting
- Dynamic spindle brake
- 1,024 Kbyte data buffer.
- Embedded servo design
- Reallocation of defects on command (Post Format)
- Fibre Channel interface transports SCSI protocol
Performance
- Programmable multi-segmentable cache buffer
- 106 Mbytes/sec maximum instantaneous data transfers per port
- 10,016 RPM spindle; average latency = 2.99 msec
- Command queuing of up to 128 commands
- Background processing of queue
- Supports start and stop commands
- Adaptive seek velocity; improved seek performance
Reliability
- 1,000,000 hour MTBF
- LSI circuitry
- Balanced low mass rotary voice coil actuator
- Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)
- Dithering
Compatibility:
This drive is compatible with any server that accepts 3.5inx1.0in LFF Fibre Channel Drive.
| Cheetah 18LP FC Disc Drive | |
|---|---|
| Model Number | ST318251FC |
| Alt Model Number | 9P2004-001 |
| INTERNAL DRIVE CHARACTERISTICS | |
| Drive capacity | 18.2 GB |
| Read/write data heads | 12 |
| Bytes per track | 153,284 -229,045 Bytes (average, rounded off values) |
| Bytes per surface (total) | 1,913 Mbytes (unformatted, rounded off value) |
| Tracks per surface (total) | 9,801 Tracks (user accessible) |
| Tracks per inch | 12,580 TPI |
| Peaksbits per inch | 252 KBPI |
| Internal data rate | 193-300 Mbits/sec (variable with zone) |
| Disc rotation speed | 10,016 rpm (+ 0.5%) |
| Avg rotation latency | 2.99 msec |
| GENERAL PERFORMANCE CHARACTERISTICS | |
| Data buffer to/from disc media | |
| Fivre Channel Interface maximum instantaneous transfer rate | 106 Mbytes/sec per port |
| Logical block size | |
| Read/write consecutive secotors on a track | Yes |
| Flae reallocation performance impact | Negiligible |
| Overhead time for head switch in sequential mode | 0.8 msec |
| Overhead time for one track cylinder switch in sequetial mode | 1.2 msec (typical) |
| Average rotational latency | 2.99 msec |
| RELIABILITY SPECIFICATIONS | |
| Seek error rate | Less than 10 errors in 10^8 |
| Read Error Rates | |
| Interface error rates | |
| MTBF | 1,000,000 hours |
| PHYSICAL/ELECTRICAL SPECIFICATIONS | |
| Typical power dissipation under idle conditions | 12.1 watts |
| Maximum wet bulb temperature | 82°F (28°C) |
| Operating Temperature | 41°F to 122°F (5°C to 50°C) |
| Non-operating Temperature | –40° to 158°F (–40° to 70°C) |
| Relative humidity opererating | 5% to 95% non-condensing relative humidity with a maximum gradient of 10% per hour |
| Relative humidity Non-operating | 5% to 95% non-condensing relative humidity.) |
| Effective altitude (sea level) Operating | –1,000 to +10,000 feet (–305 to +3,048 meters) |
| Effective altitude (sea level) Non-operating | 82°F (28°C) |
| Vibration Operating - normal | 5-400 Hz @ 0.5 G |
| Vibration Operating - abnormal | 15 minutes of duration at major resonant frequency 5-400 Hz @ 0.75 G (X, Y, or Z axis) |
| Vibration Non- operating | |
| Air cleanliness | The drive is designed to operate in a typical office environment with minimal environmental control. |
| Acoustics | Sound power during idle mode shall be 4.3 bels typical when measured to ISO 7779 specification |
| Height | 1.000in/25.4mm |
| Width | 4.000in/101.6mm |
| Depth | 5.75in/146.05mm |
| Weight | 1.3pounds/0.589 kilograms |
Click here to view the manufacturer's item description/brochure
Alternate MPNs: 9P2004-001
Weight: 2.5 lb
Warranty: 1 Year DiscTech
Refurbished
These products have had NO problems or failures, they merely have some usage. The product has been professionally returned to excellent condition. These items have been fully tested, formatted (if appropriate) &repackaged. Hard drives are fully vetted for surface defects and wear, only healthy disks are approved for resale to our customers. Please see our refurbishing process for more details. Watch a video about our refurbishing process
1 Year DiscTech Warranty
The product has a DiscTech warranty for the time period specified. View our limited warranty