FUNCTIONAL SPECIFICATIONS OF M2952 & M2954
| MODEL | M2952S/Q/R/E | M2954S/Q/R/E | |
|---|---|---|---|
| Storage capacity(Formatted) | 2.40GB | 4.35GB | |
| Disks | 3 | 5 | |
| Heads(Read/Write) | 5 | 9 | |
| Track capacity(Formatted) | 77,214 to 109,173 bytes | ||
| Track per cylinder | 5 | 9 | |
| Cylinders | 5,713 | ||
| Sectors | 186/182/180/178/174/170/165/161/155/146/137/129 | ||
| Seek time |
Track to track | Read 0.8ms (typ.)/Write 1.0ms (typ.) | |
| Average | Read 8.0ms (typ.)/Write 9.0ms (typ.) | ||
| Maximum | Read 17.0ms (typ.)/Write 18.0ms (typ.) | ||
| Average latency time | 4.17 ms | ||
| Rotational speed | 7,200 rpm | ||
| Recording density | 83,603 to 118,737 BPI | ||
| Track density | 6,438 TPI. | ||
| Data transfer rate | To/from media | 14 MB/s | |
| To/from host | SA type; 6MB/s (ASYNC), 10MB/s (SYNC) SY & Q type; 6MB/s (ASYNC), 20MB/s (SYNC) R & E type; 12MB/s (ASYNC), 40MB/s (SYNC) |
||
| Recording code | RLL 8/9 | ||
| Interface | SA: Fast Narrow SCSI-2, Single-ended SY: Fast-20 Narrow SCSI-2, Single-ended Q: Fast-20 Wide SCSI-2, single-ended R: Fast Wide SCSI-2, differential E: Fast-20 Wide SCSI-2 with SCA-2 connector |
||
| Head Positioning method | ROTARY VCM | ||
| Start time | 30 sec.Typical | ||
| Stop time | 30 sec.Typical | ||
PHYSICAL SPECIFICATIONS OF M2952 & M2954
| MODEL | M2952S/Q/R/E | M2954S/Q/R/E | |
|---|---|---|---|
| Power requirements in operation | +12V +/-5% | 0.57A(typ.)/2.0A(Peak) | |
| +5V +/-5% | 1.0A(typ for S)/1.1A(average for R) | ||
| Power requirements in starting | +12V +/-5% | 1.8A(Peak)/3.0A(Peak<100 micro sec.) | |
| +5V +/-5% | 1.0A(typ for S)/1.1A(average for R) | ||
| Power consumption (idle) | 10 watts for S type 10.5 watts for Q/E type |
||
| Dimensions | Height | 25.4mm(1.0in.) | |
| Width | 101.6mm(4.0in.) | ||
| Depth | 146.0mm(5.7in.) | ||
| Weight | 0.6Kg(1.3 lbs) | ||
| Ambient temperature | Operating | 5C to 50C(41F to 122F) | |
| Non-operating | -40C to 60C(-40F to 140F) | ||
| Gradient | 15C(59F)/H (Max) | ||
| Relative humidity | Operating | 20% to 80% RH | |
| Non-operating | 5% to 95% RH(non-condensing) | ||
| Max.wet bulb | 29C(84F) | ||
| Vibration | Operating | 1G Max.(5-250HZ) | |
| Non-Operating | 5G Max.(5-250HZ) | ||
| Shock | Operating | 5G Max.,10ms | |
| Non-operating | 50G Max.,10ms | ||
| Altitude | Operating | 3,000m (Max.) | |
| Non-operating | 12,000m (Max.) | ||
| Acoustic noise | 34dBA (Ave.) | ||
RELIABILITY SPECIFICATIONS OF M2952 & M2954
| MODEL | M2952S/Q/R/E | M2954S/Q/R/E | |
|---|---|---|---|
| Mean time between failures(MTBF) | More than 1,000,000 POH (less than 45C or 113F base) | ||
| Mean time to repair(MTTR) | Less than 30 minutes | ||
| Component life | 5 years (less than 45C or 113F base) | ||
| Error rates | Unrecoverable error | 10 per 1015bits read | |
| Seek errors | 10 per 108bits read | ||
back to previous page to the table of contents!!