| Processor | 
   
    | Number | Up to two processor modules | 
   
    | Architecture | 250-, 300- or 400-MHz UltraSPARC[tm]-II with onboard e-cache | 
   
    | Cache memory | 1-MB external cache per processor with 250-MHz CPU 2-MB external cache per processor with 300- or 400-MHz CPU  | 
   
    | Datapath | Buffered 144-bit UPA bus, 128 bits data, 16 bits ECC  UPA operates at 100-MHz with 300- or 400-MHz CPUs  | 
   
    | Main 
      Memory | 
   
    | Capacities | 16 DIMM slots, four banks of four slots  Accepts 32-, 64-, or 128-MB DIMMs  128 MB to 2 GB total memory capacity  | 
   
    | Memory type | 144-pin 5V 60-ns memory modules | 
   
    | Datapath | 576 bits wide, 512 bits data, 64 bits ECC  Up to 600 MB/sec throughput  | 
   
    | Standard 
      Interfaces | 
   
    | Ethernet | One ethernet/fast ethernet (10BASE-T/100BASE-T) twisted-pair standard 
      connector (RJ-45) or 
      one MII for external 
      transceiver connection, autoselect port | 
   
    | Keyboard and mouse | One standard keyboard/mouse port (mini 
      DIN-8) | 
   
    | Parallel | One Centronics compatible, bidirectional, EPP port (DB25) | 
   
    | PCI | Four full-size slots compliant with PCI specification version 2.1: 
        One slot operating at 33- or 66-MHz, 32- or 64-bit data bus width, 
          3.3 volt Three slots operating at 33 MHz, 32- or 64-bit data bus width, 5 volt
 | 
  
    | RSC | One RSC port (The highest level firmware for the Enterprise 250 RSC card 
      is version 1.1.4, but the Enterprise 250 does support all currently released 
      versions of the RSC software) | 
   
    | SCSI | One 40MB/sec, 68-pin 
      ,Ultra SCSI (SCSI-3), 2 channels (synchronous) | 
   
    | Serial | Two RS-232D/RS423 serial ports (DB25) | 
   
    | Internal 
      Mass Storage | 
   
    | Disks | Up to six 18-GB 3.5 x 1.6 in., 36-GB 3.5 x 1.0 in., 10000 rpm, hot-pluggable 
        Ultra SCSI-3 drives(4.2-GB and 9.1-GB 7200 also configured)
 
 Disk bays: Six hot-pluggable disk bays
 Disk controllers: One 40-MB/sec Ultra SCSI-3 channel
 | 
   
    | CD-ROM/DVD-ROM | Internal SunCD 32 (standard; last order = Nov. 2000) Internal 10X DVD-ROM drive (standard) | 
   
    | Floppy | 1.44-MB 3.5-in. floppy drive | 
   
    | Tape | Optional 5.25 x 1.6 in. fast SCSI tape drive, 8-mm, 4-mm DDS-3, DDS-2, 
      MLR3, SLR5 | 
   
    | Power 
      Supplies | 
   
    | Type | One or two N+1 redundant, hot-swap, universal input (1 supply standard) | 
   
    | Output | 360 W | 
   
    | Power bus | Common, load-sharing | 
   
    | Environment | 
   
    | AC input | 100 - 240 VAC, 47 - 63 Hz, 2.8 A(max) | 
   
    | Input power | 343 W | 
   
    | Heat output | 1170 BTU/hr | 
   
    | Temperature1 | Operating: 5° C to 35° C (41° F to 95° F) Nonoperating: -20° C to 60° C (-4° F to 140° F)
 | 
   
    | Humidity | Operating: 20% to 80% relative humidity, noncondensing Nonoperating: 5% to 93% relative humidity, noncondensing
 | 
   
    | Altitude | Operating: 3000 m (10,000 ft.) Nonoperating: 12,000 m (40,000 ft.)
 | 
   
    | Acoustic noise | Operating: 6.5 bels Idling: 6.3 bels
 | 
   
    | Vibration | Operating: 0.2G peak, 5 - 500 Hz (swept sine) 0.0002 G2/Hz, 5 - 500 Hz (random)
 vertical axis only (castered configuration), vertical and horizontal axes 
      (foot glide configuration)
 Nonoperating: 1G peak, 5 - 500 Hz (swept sine)
 0.002 G2/Hz, 5 - 500 Hz (random), 3 perpendicular 
      axes
 | 
   
    | Shock | Operating: 4G peak, 11 milliseconds half-sine pulse Nonoperating: 15G peak, 11 milliseconds half-sine pulse
 | 
   
    | Number of cords | 1 | 
   
    | 1 The front and 
      rear doors of the cabinet must be 63% open for adequate air flow. | 
   
    | Regulations Meets or exceeds the following requirements:
 | 
   
    | Safety | EN60950/IEC950 TUV, UL 1950, CB Scheme IEC 950, C22.2 No. 950 from UL | 
   
    | RFI/EMI | EN55022/CISPR22 Class B, VCCI Class II FCC Part 15 Sub Part B | 
   
    | Immunity | EN50082/IEC-1000-2/IEC-1000-3, IEC-1000-4, IEC-1000-5 | 
   
    | X-ray | DHHS 21 Subchapter J, PTB German X-ray Decree | 
   
    | Dimensions 
      and Weights | 
   
    | Height | 46.0 cm (18.1 in.) or 51.7 cm (20.4 in.) with caster option 90.8 cm (35.75 in.) shipping
 | 
   
    | Width | 26.2 cm (10.3 in.) 45.72 cm (18.0 in.) shipping
 | 
   
    | Depth | 68.8 cm (27.1 in.), power supply handles add 3.1 cm (1.2 in.) 86.36 cm (34.0 in.) shipping
 | 
   
    | Weight | 53 kg (118 lb.) 58.97 kg (130 lb.) shipping
 | 
   
    | Power cord | 2.5 m (8.2 ft.) | 
   
    | Clearance 
      and Service Access | 
   
    | Front1 | 91.4 cm (36 in.) | 
   
    | Rear1 | 91.4 cm (36 in.) | 
   
    | Right1 | 91.4 cm (36 in.) | 
   
    | Left1 | 91.4 cm (36 in.) | 
   
    | Top1 | 91.4 cm (36 in.) | 
   
    | Airflow |   | 
   
    | 1These 
      specifications refer to a sytem that is fully extended from the rack for 
      service. When in normal operation, there are no side clearance requirements 
      for the server as the air flow is from the front to rear. However, make 
      sure that any front or back cabinet doors are 63% open to allow adequate 
      airflow. This can be accomplished by removing the doors, or ensuring that 
      the doors have a perforated pattern that provides a 63% open area. See  Site Planning Guide for Entry Level Servers 
      for more details. | 
   
    | Rack 
      Mounting | 
   
    | Up to four Sun Enterprise 250 servers may be mounted in a 56-in. 
      expansion cabinet. Up to five Enterprise 250 servers may be mounted in a 
      72-in. expansion cabinet. |