Sun SPARC Enterprise 420R

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Sun SPARC Enterprise 420R

Sun SPARC Enterprise 420R Overview



From one to four processor modules
450-MHz UltraSPARC[tm]-II module
Cache memory
16-KB I-cache, 16-KB D-cache per processor
4-MB external cache per processor
UPA operates at 112.5-MHz with 450-MHz processor

Main Memory

16 DIMM module slots; four banks of four slots
Accepts 64- or 256-MB DIMMs
256-MB to 4 GB total memory capacity
Memory type
144-pin 5V 60-ns memory modules
576 bits wide; 512 bits data, 64 bits ECC
Up to 1.78-GB/sec throughput

Standard Interfaces

One ethernet/fast ethernet (10BASE-T/100BASE-T) twisted-pair standard connector (RJ-45), self-sensing
Keyboard and mouse
One standard keyboard/mouse port (mini DIN-8)
One Centronics compatible parallel port (DB25); ECP mode capable
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
Two slots operating at 33 MHz, 32- or 64-bit data bus width, 5 volt
One slot operating at 33 MHz, 32-bit data bus width, 5 volt
One 40MB/sec, 68-pin ,Ultra SCSI (SCSI-3), 2 channels (synchronous)
Two RS-232C/RS423 serial ports (DB25)

Internal Mass Storage

Up to two 9.1-, 18.2-, or 36.4-GB disk
SunCD 32x 644-MB SCSI CD-ROM (standard; last order November 2000)
10X DVD-ROM (standard)
Optional 12 to 24-GB DDS2 4-mm or 14-GB 8-mm

Power Supplies

One or two N+1 redundant, hot swap universal input (one supply standard), individual power cords
380 W
Power Bus
Common, load-sharing


AC Input
100 - 240 VAC, 47 - 63 Hz, 6.3 A(max)
Input Power
610 W
Heat Output
2080 BTU/hr
Operating: 5° C to 35° C (41° F to 95° F)
Nonoperating: -20° C to 60°° C (-4° F to 140° F)
Operating: 20% to 80% relative humidity, noncondensing
Nonoperating: 5% to 93% relative humidity, noncondensing
Operating: 3000 m (10,000 ft.)
Nonoperating: 12,000 m (40,000 ft.)
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: 1 G peak, 5 - 500 Hz (swept sine) 0.002 G2/Hz, 5 - 500 Hz (random) 3 perpendicular axes
Operating: 4G peak, 11 milliseconds half-sine pulse
Nonoperating: 15G peak, 11 milliseconds half-sine pulse
Number of Cords
1 per power supply; 2 (max)
*The front and rear doors of the cabinet must be 63% open for adequate air flow.


Meets or exceeds the following requirements:
UL 1950, UL Canada C22.2 No. 950, TUV EN60950, UL CB Scheme to IEC 950 with full deviations
FCC Class A, DOC Class B, VCCI Class B, EN55022 Class B
DHHS 21 Subchapter J; PTB German X-ray Decree

Dimensions and Weights

17.8 cm (7.0 in.)
43.8 cm (17.25 in.) shipping
43.8 cm (17.25 in.)
60.02 cm (23.63 in.) shipping
69.2 cm (27.25 in.)
93.98 cm (37.0 in.) shipping
32.0 kg (71 lb.)
38.6 kg (85 lb.) shipping
Power cord
1.99 m (6.56 ft.)

Clearance and Service Access

91.4 cm (36 in.)
91.4 cm (36 in.)
91.4 cm (36 in.)
91.4 cm (36 in.)
91.4 cm (36 in.)
*These 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.

Rack Mounting

Fits into a standard commercial 19-inch wide, 36-inch deep rack


Express Computer Systems state-of-the-art engineering lab and certified technicians will make sure that your Sun SPARC Enterprise 420R is tested rigorously and in perfect working condition. To back it up, we carry a 100% Satisfaction Guarantee on all of our used and refurbished gear, in addition to one of the industries best warranties.

Shipping Policy

We stock all of our products. Items are fully tested and professionally packaged to ensure functionality on arrival.

The Sun SPARC Enterprise 420R will ship the same day if the order is received with sufficient testing and packaging time.

*Alaska and Hawaii customers, please contact us for a shipping quote.

Shipping Methods

We ship via Fedex. Next Day and expedited shipping services are available. Please contact us for a quote to upgrade shipping.

We can also ship via UPS or FedEx on your account number. Other freight and carrier services are available, please contact us at to make arrangements.

Pickup & Delivery

Local customers may also arrange for pickup or delivery of items.

Net Terms

Approved Educational, Government, and Corporate customers may submit a purchase order to purchase the Sun SPARC Enterprise 420R.

Please contact us and we will FAX or Email you a credit application.

Finance & Leasing Options

We have solutions to help you finance your purchase. Please contact us at to learn more about our finance and leasing options.

Credit Card

To pay via credit card, please call us at (800) 327-0730


FAX your card type, card number, expiration date, name as it appears on the card, complete billing address including apartment number, zip code and phone number to us at (800) 327-0730.

Wire Transfer

International buyers must pay via Wire Transfer.

Please email us at to purchase this product with a wire transfer.


Business and Personal Checks must clear prior to shipment.