sun microsystems, inc. The Sun-2 Product Family: A Technical Overview ■ ^ The Sun-2 Product Family: A Technical Overview Product Description Sun Workstations11 are powerful general-purpose computers providing state-of-the art computing environments for the technical professional. Operating in a distributed network, each workstation supplies its user with a dedicated 32-bit architecture CPU, memory, and a high-resolution bit-mapped graphics display, while using high-speed local area communications to share other network resources and services. All Sun Workstations run the most advanced version of the UNIX™ operating system, as enhanced at the University of California at Berkeley. UNIX 4.2bsd facilitates implementing and executing technical applications by supporting large demand-paged virtual address spaces, fast I/O to disk and local network, multiprocessing, and flexible inter-process communication. The Sun-2™ product family comprises several workstations offering the user the identical processing power across a range of flexible configurations and packaging alternatives. The Sun-2/120™ and Sun-2/170 are two members of this family. The Sun-2/120 Deskside™ SunStation™ provides the user with a high-performance personal workstation configured either as an expandable network node or as a self-contained stand-alone system. The Sun-2/170 Rackmountable Sun-Station provides the user with the maximum configuration flexibility and expandability for building network servers. In both these systems, fast hardware combines with the power of the UNIX operating system and more than 220 standard UNIX utility programs, plus additional tools such as Sun's multi-window display manager and device-independent graphics library, to create the most productive computing environment available today. The Sun-2/120 desktop components include the standard 19-inch landscape monochrome display, op- tical mouse, low-profile keyboard, and an optional 13 - or 19-inch landscape color display. A separate pedestal unit houses the processor, memory, display electronics, and local network interface, along with options such as mass storage peripherals and color display controller. The Sun-2/170 enclosure mounts in a standard 19-inch instrumentation rack, and contains he processor, memory, and local network interface. Both monochrome and color displays are available as options, along with several rackmountable mass storage peripherals offering a wide range of capacity. Common Features ■ 32-bit architecture MC68010 processor ■ 16 megabytes of virtual address space per process ■ Up to 4 megabytes of physical memory ■ Hardware floatingpoint accelerator option ■ UNIX operating system supporting demand-paged virtual memory ■ Ethernet11 local area network interface ■ High-resolution (1152x900) non-interlaced bit-mapped monochrome display (standard on Sun-2/120, optional on Sun-2/170) with anti-glare option ■ Medium-resolution (640 x 480) bit-mapped color display option with 8 color planes (256 simultaneous colors from a palette of over 16 million) ■ SunCore™ device-independent graphics library ■ Sun Windows™ flexible multi-window display manager supporting overlapped windows, pop-up menus, and icons ■ C, Fortan, and Pascal programming languages Sun-2/120 Features ■ 9-slot Multibus01 card cage (four slots used in basic product) ■ One megabyte main memory standard ■ Integral disk and tape options for local mass storage ■ Attractive office-environment packaging with desktop display unit and electronics in slim-line pedestal ■ Ergonomic design with low-profile keyboard, tilt-and-swivel display and optical mouse. Sun-2/170 Features ■ 15 -slot Multibus card cage (five slots used in basic product) ■ Two megabytes main memory standard ■ Packaged for mounting in 19-inch instrument rack ■ Large-capacity, rackmountable mass storage options Sun-2 Workstation Architecture Processor I Sun-2 Workstation Architecture The Sun-2 architecture specification standardizes, independently of implementation method, the capabilities of the basic workstation hardware and a common set of input/ output devices that are available to the operating system and to user programs. The architecture supports a multitasking operating system (UNIX 4.2), virtual memory, communications (Ethernet local networking), and bit-mapped graphics displays. The Sun-2 architecture is based on industry and international standards and was designed for a long, useful lifetime. As the fundamental Sun-2 technologies evolve, advances can be incorporated rapidly into Sun-2 products while maintaining compatibility at the software level. The Sun-2 architecture lends itself to both low-cost and very high-performance implementations. All Sun Workstations in the Sun-2 product family adhere to the architectural specification, providing the user Sun-2/170 with software portability across a range of workstations with differing features. Card Cage and Backplane The design of the Sun-2/120 Deskside SunStation and Sun-2/170 Rackmountable SunStation is based on the industry-standard Multibus (IEEE-796 Bus) for system card cage and backplane. The unique Sun design uses the private bus provided by the Multibus specification (the "P2" bus) for high-speed access to main memory and display memory, while using the basic ("PI") bus as an I/O bus for access to a wide variety of peripherals. Central Processing Unit The computational power of all Sun Workstations begins with the most advanced microprocessor available today: the MC68010, a recent addition to the popular Motorola 68000 processor family. This CPU supports virtual memory operation, allowing users to develop application pro- Sun-2 workstations operate the MC68010 processor with a 10 MHz clock. At this high clock rate most microprocessor systems are limited by the speed of their main memory —the CPU must incur one or more wait states (wasted clock cycles) on every access to memory. Some system designs attempt to relieve this problem by introducing expensive high-speed cache memory to speed up memory access. The highspeed Sun-2 memory management unit allows the processor to access all of main memory with no wait states—in effect turning all of main memory into cache. The memory management unit ("MMU") for the Sun-2 family implements two-level address translation for virtual memory operations, providing both segment and page addressing. The MMU hardware provides a protected system environment for multiprocessing by supporting separate read, write, and execute permissions for both the operating system and the user on every page of memory. Optimizations for the UNIX operating system include referenced and modified bits for each page of memory (to facilitate efficient demand paging algorithms) and hardware support for eight separate contexts (to facilitate rapid process switching). grams larger than the amount of available main memory without complicated overlay schemes. Every process may use up to 16 megabytes of virtual address space, enough for the most sophisticated technical applications. Memory Management Unit Memory ■■MM System Block Diagram 19" Display Monochrome (2)RS-423 Serial Ports Ethernet Coax 1152x900x1 Display Controller 1-4 MB High-Speed RAM JL 68010 CPU Virtual Memory Management Sun Private Fast Memory Bus (P2 Bus) (4) RS-423 Serial Ports 42 MB Disk /4-inch Tape ST 506 Adapter oo QIC-2 Adapter DVMA SCSI Host Adapter 10 Mbps Ethernet Memory Map RS-170 Display Color Floating Point Accelerator 640 x 480 x I Display Controller Multibus (IEEE-796) (PI Bus) SMD Disk Controller 9-track Tape Controller Vi-inchTape Direct Virtual Memory Access For greater system performance, the Sun-2 MMU also supports Direct Virtual Memory Access ("DVMA™"). High-speed peripheral devices such as disk and tape drives are able to transfer data directly to and from private memory through the MMU on the processor board. The MMU enhances system reliability by allowing DMA devices to operate with virtual memory addresses that are translated and protected, exactly as are program accesses to main memory. Main Memory The Sun-2/120 is equipped with 1 megabyte of main memory standard, while the Sun-2/170 is equipped with 2 megabytes. Both may be expanded up to 4 megabytes in 1-megabyte increments. Sun main memory uses high-speed (150 nanosecond) dynamic RAMs to complement the 10 MHz processor and no-wait-state memory management. All system memory is equipped with parity error detection. CPU On-board Peripherals Additional features of the Sun-2 processor architecture include a time-of-day clock with battery backup, used by the operating system during the completely automatic system boot procedure; and two RS-423 serial ports with modem control. Compatible with the older RS-232Cstandard, these serial ports are useful for driving output devices such as printers and plotters. Sun-2 Workstation Architecture Display ■HH ■■■■■■■ Monochrome Graphics Display The black-and-white monitor (standard on a Sun-2/120 Deskside SunStation, optional on a Sun-2/170 Rackmountable SunStation) displays more than one million pixels, organized in 900 rows of 1152 columns. This high-bandwidth 19-inch landscape console provides the large viewing area and high resolution required by advanced user interface software, such as integrated text and graphics editors and the Sun multi-window display manager. The Sun-2 video controller refreshes the screen at 70 Hz non-interlaced, providing a flicker-free display for even the most detailed images. Monochrome Frame Buffer From a logical viewpoint, the Sun-2 frame buffer is part of main memory: programs create display images by modifying "frame buffer memory." Programs access this region exactly as they would any other part of their address space, through direct memory manipulations, leading to simpler programming. Physically, the Sun-2 monochrome frame buffer resides on the high-speed private bus along with the processor and main memory. It provides 128 kilobytes of dual-ported frame buffer memory that drives the actual video output. This eliminates memory contention that would degrade performance, if the display were refreshed out of program memory, and increased expense, if all of main memory were dual-ported. RasterOp Processor Placing arbitrary bit patterns at arbitrary locations on the display requires complex manipulations of raster patterns. Hardware assistance for these raster operations (RasterOps) helps provide fast dis- play operations and a responsive system. The Sun-2 processor incorporates a custom VLSI chip that performs RasterOps on source and destination locations anywhere in main memory. When invoked by low-level window system and graphics software, the RasterOp processor is inserted in the data path between processor and main memory. It performs shifting, boolean operations, and masking, using the source and destination data during a single Read-Modify- Write memory cycle, replacing numerous MC68010 instructions that would be required to perform this task with software. The multi-window display manager, an essential component of the computing environment provided by the Sun-2 product family, is one example of an application that makes heavy use of raster manipulations. The user creates and modifies windows as needed, to maintain the context of multiple parallel activities. RasterOps are used to paint windows containing arbitrary alphanumeric text and/or graphics at arbitrary, possibly overlapping locations on the display. ■ Local Area Network ■ ■■ Network Diagram Local Network Support Local area network communications is a standard capability of every Sun-2 Workstation. The local network hardware and software permit several types of resource sharing among clusters of Sun Workstations, such as common printer service and common modems for remote telecommunications. They also provide traditional distributed system communications functions, such as file transfer and electronic mail between individual network nodes. Most importantly, the local net enables Sun Workstations to operate without disk storage on every node. Instead, diskless nodes use the network to perform demand paging as well as ordinary file input and output. One node (a Sun-2/ 120FS or Sun-2/170) can supply mass storage for multiple diskless nodes. This allows the use of larger, more cost-effective peripherals, located away from the users' offices and possibly maintained by a network administrator. Ethernet Interface The design of the Ethernet interface for the Sun-2 Workstations is an integral part of the Sun-2 family architecture. Meeting peak performance requirements in a network server configuration, where many clients may be funneling requests to a single server, was a key design criterion. For that reason, the Sun-2 Ethernet controller is equipped with 256 kilobytes of on-board buffer memory. It accepts back-to-back packets from the Ethernet while simultaneously accepting DMA transfers from disk controllers. After the CPU initiates a disk transfer, the processor can build Ethernet packet headers while the disk transfers data into Ethernet buffer memory. The Ethernet controller, using its own on-board memory management unit, then "gathers" the complete packet as it transmits it, avoiding the overhead of copying data. Less overhead on the server results in better performance for every client. Network Configurations One high-performance Ethernet interface is standard with each Sun-2/120 and Sun-2/170, whether it will be a client or a server. A second Ethernet interface may be added to a Sun-2/120 or Sun-2/170 in order to build a gateway between physically separate Ethernets in the same local area. When the physical network topology includes these gateways, the gateways are not visible to application programs. All network services (except disk service for diskless workstations) proceed as if there was a single logical network. Sun-l/100U and Sun-l/150U workstations, if upgraded to run the same software release, may coexist on the same physical Ethernet. Either Sun-1 or Sun-2 nodes may be servers for either Sun-1 or Sun-2 clients. Dedicated Server Configurations One possible use of the Sun-2/120 is as a dedicated network server for a small cluster of Sun Workstations. The Sun-2/120FS deletes the bitmapped monitor, display controller, keyboard, and optical mouse to provide a cost-effective configuration for this situation. Instead of the graphics display, the customer supplies a standard ASCII terminal for use as the system console. Otherwise, all the standard system features and options are identical for both the Sun-2/120 and Sun-2/120FS. The Sun-2/170 is most frequently used as a dedicated network server, because the most cost-effec-tive large-capacity disk drives are only available for rack mounting. Also, the 15-slot card cage provides much greater configuration and expansion flexibility, allowing the use of multiple disk controllers, tape controllers, and other peripheral interfaces. For these reasons the standard Sun-2/170 does not include the bitmapped display; it is available as an option. Stand-alone Configuration For applications where the Sun-2/ 120 or the Sun-2/170 will be used in a stand-alone environment, the network interface may be deleted from the normal configuration. The system then requires both a local disk and tape option. Multi-vendor Networks Sun's choice of the industry-standard 10 megabit-per-second Ethernet for networking Sun Workstations simplifies the task of building multi-vendor networking environments. On top of the Ethernet low-level protocols, Sun Workstations implement the Address Resolution Protocol (ARP), Internetwork Protocol (IP), and Transmission Control Protocol (TCP) developed by the United States Department of Defense. Implementations of TCP and IP exist for many operating systems on hardware ranging from supercomputer mainframes to personal computers. With compatible higher-level protocols, file transfer and other user-level services are possible between heterogeneous systems. Software SSSH mmgmmm MMM wm SunCore Library To aid programmers in developing or porting graphics applications, Sun software includes the SunCore graphics library, Sun's implementation of the ACM Siggraph Core specification. SunCore provides a library of high-level procedures for creating graphics images, such as commands for drawing vectors, filling solid regions, and moving and scaling image segments. The device-independent SunCore routines, callable from any programming language, insulate programmers from device-specific details such as the number of pixels on a display. SunCore implements the full Siggraph Core standard: level 3C for output primitives and level 2 for input primitives. SunCore device-independent 2-D, 3-D, and raster graphics primitives support all Sun Workstation displays and also operate within the Sun window system. Sun has added a number of extensions to SunCore for capabilities not specified in the Siggraph standard, including support for smooth surface shading of polygons (for the Sun color display) and hidden surface removal using a virtual memory z-buffer. SunWindows The Sun window system provides complete display management and user interface design facilities for the Sun Workstation. SunWindows allows the user to create many, possibly overlapping, windows containing both text and graphics, in order to visually manage multiple concurrent tasks. Interacting with the optical mouse, the window manager supports pop-up menus for manipulating the window environment: creating new windows; opening and closing windows and icons; and hiding, exposing, moving, and changing the size of existing windows. Sun has implemented standard "application windows" which provide a virtual terminal interface to UNIX, giving easy access to existing terminal-based applications that are not integrated with the window system. With these virtual terminal windows, users in effect have multiple terminals on their desks. They can use standard utilities such as the screen editor vi and electronic mail, while simultaneously compiling new program modules and debugging an application that generates graphic output. Using the mouse, the user can select data from one window and insert it into another, as well as modify the windows themselves. In addition to these standard windows, SunWindows is "open" to the user who wishes to more completely integrate an application into the window environment. Sun has specified layers of functionality within the window system architecture and provides subroutine libraries implementing a programmatic interface to each layer. Each layer of the window system adds additional capabilities built from the facilities provided by the lower layers, permitting users to customize SunWindows for their needs. At the lowest level, SunWindows provides two device-independent interfaces: raster output primitives for displays, and a stream input format for keyboards and mice. Above the input-output level, SunWindows provides tools for defining a hierarchical set of windows on the display. If windows overlap, the window manager automatically performs clipping and display locking during screen updates. At higher Software SunWindows supports the creation and manipulation of overlapping windows containing both text and graphics. The optical mouse and pop-up menus are used to manipulate the icons, windows, and window contents. SunWindows provides both standard application windows and a programmatic interface for specifying custom application windows. levels, SunWindows supports many user-interface facilities, including pop-up, stackable menus to manipulate the window environment, and an icon facility, which supplies small symbolic representations of closed windows for easy recall. Users have programmatic access to any or all of these levels in the SunWindows system. Third-Party Program Sun Microsystems sponsors an active program to promote the development of new software and the porting of existing software to the Sun Workstation. Many packages are already available from third-party software vendors, and the number is growing rapidly. Third-party program bulletins are issued regularly and are available at any Sun field office. Products available today include additional "horizontal" (general-purpose) software tools, such as database managers, word processors, and programming languages; "vertical" (specific) application packages, such as printed circuit board layout and page composition for phototype-setting; and support for additional hardware devices, such as high-resolution laser printers. Optional Hardware and Peripherals The "open system" hardware and software design philosophy and the selection of a Multibus system backplane for the Sun-2/120 and Sun-2/ 170 facilitates the integration of a variety of peripherals into these Workstations. Options available from Sun Microsystems provide mass storage, backup, enhanced computational performance, and color display capability. Hardware Floating Point Option Floating point arithmetic on Sun Workstations is normally performed by software subroutines, using IEEE-754 standard formats for 32-bit single and 64-bit double precision operations. The hardware floating point option equips a Sun-2 workstation with a floating point processor ("FPP") that supports IEEE standard format. Adding an FPP will substantially reduce the execution time of computationally intensive algorithms. Floating point support is architecturally designed into the Sun-2 product family so that the user's programs need not be aware of the presence or absence of the hardware FPP. Using the "vector library" compiler switch, binary applications are transportable between machines with and without the FPP option. Moving programs requires no recompilation or relinking, a major benefit in networks where not every node has an FPP For non-networked application environments and where binary portability is not required, the"in-line code" compiler switch provides peak floating point performance. Mass Storage Options Both Sun-2 models offer V^-inch and ^-inch tape options, and disk options in several capacities. All Sun-2/170 disk and tape options are packaged for mounting in a 19-inch rack; Sun-2/120 disk and tape options, except the V^-inch tape drive, are pedestal-mounted for office installation. The pedestal unit that houses the electronics for the Sun-2/120 provides for the installation of a 42 megabyte (50 MB unformatted), 51/4-inch Winchester disk drive and x/a-inch streaming tape cartridge drive. These options make it possible to configure the Sun-2/120 as a self-contained stand-alone computer system, for applications where networking is not required. They may also be used to add local storage to a Sun-2/120 that is a network node. Only one interface is required for either or both of these options. Called an SCSI host adapter, it supports the new ANSI-standard (ANSC X3T9.2) Small Computer System Interface ("SCSI"), which specifies a high-speed parallel bus for multiple intelligent device controllers. The host adapter for the Sun-2/120 also provides four RS-423 serial ports for driving additional output devices (in addition to the two RS-423 ports provided by the Sun-2 processor). The SCSI interface, with four RS-423 ports, is also used for the ^-inch tape backup option on the Sun-2/170. If larger storage capacity is required, the Sun-2/120 is available with a second pedestal unit containing 130 megabytes (168 MB unformatted) of disk space.The second pedestal connects to the Sun-2/120 through a high-perfor-mance non-interleaved SMD disk controller instead of the SCSI interface. (If present, the ^4-inch tape unit using the SCSI interface is mounted in the first pedestal.) High-speed Winchester disk drives in three capacities are available for the Sun-2/170, all connecting through the SMD disk controller: 65 megabytes (84 MB unformatted), 130 megabytes (169 MB unformatted), and 380 megabytes (474 MB unformatted). Each of these disks connects to the system through an SMD disk controller, with either one or two drives per controller. For environments where traditional V^-inch tapes are desirable, the Sun-2/120 and Sun-2/170 offer a ^-inch, 1600 bpi, 9-track tape drive option. This tape drive requires a separate 19-inch rack for mounting, and connects to either system through a dedicated controller. Color Display Options Many workstation applications require color displays in addition to monochrome. Color is often used to assist the user in assimilating complex data, such as VLSI circuitry layers. Some applications are not possible without many additional intensity levels, such as image processing. The Sun-2/120 and Sun-2/170 offer a medium-resolution color display controller option that displays pixels in 480 rows of 640 columns. Each pixel is stored with 8 bits of color value, resulting in up to 256 colors simultaneously on the screen. However, the display controller uses this 8-bit value as an index into a color lookup table which is separately set up by the application. The lookup table yields 24 bits of color—8 bits each of red, green, and blue—thus providing a palette of over 16 million colors. The color display controller generates RS-170 standard output (separate red, blue, green, and sync signals) for a 60 Hertz interlaced monitor. The color option is available either as display controller alone, or with a 13-inch or 19-inch landscape color monitor. Options Sun technical support staff located in each Sun field office or at Sun Microsystems' headquarters in California provide each customer with a single point of contact for both software and hardware support questions. Sun Service Sun Microsystems" offers a comprehensive hardware and software support program for all its products. The Standard Support Program provides: Software Support ■ Coverage for all standard software supplied by Sun: UNIX 4.2, utilities, networking, window management, languages, and SunCore graphics library ■ Periodic software releases -incorporating the latest enhancements ■ Software problem reporting service ■ Periodic software status bulletins Hardware Support ■ All parts and factory labor required to maintain Sun Workstations and peripherals in normal operating condition ■ Expedited factory exchange or repair of defective modules ■ Engineering changes to keep Sun products at the current revision level A software support specialist assists the customer in classifying a question as either hardware or software related. This specialist directly handles the resolution of software questions. For hardware questions, a hardware support specialist assists the customer in isolating the cause of the problem to the module level. Sun then expedites shipment of a replacement or expedites factory repair of the failed module. Sun Microsystems offers major system modules as spare parts for those customers who wish to perform their own service or who desire a local repair parts stock. These modules are completely tested and burned-in by Sun to ensure reliable operation. Fixed-cost module repair service is available from the field service organization at Sun's headquarters. Schematics and other detailed technical specifications are not part of spare parts documentation. Specifications mm Card Cage/Backplane Bus Type Bus Arbitration Processor CPU Type Clock Rate Firmware Graphics Assist Memory Management Virtual Memory 16 MB per process Address Translation Protection Contexts I/O Interface Main Memory Maximum RAM Error detection Ethernet Interface Media Type Data Rate Access Control Buffer Size Monochrome Display Monitor Format Resolution Refresh Rate Bandwidth Phosphor Keyboard Keypads Function Keys Signaling Multibus (IEEE-796) Parallel MC68010 10 MHz, 0 wait states 32 KB PROM monitor VLSI RasterOp 2 level (segment and page) Page-level R,W,X 8 in hardware DMA(DVMA) 4 megabytes Byte parity Coaxial cable 10 Mbps CSMA/CD Protocol 256 KB 19-inch landscape 1152 x 900 x 1 70 Hz, non-interlaced 100 MHz P-104 Interface Standard Software Operating System Languages Graphics User Interface 10-key (left), 15-key (right) 9 keys (top row) Programmable up/down encoding Serial UNIX 4.2bsd C, Fortran, Pascal, Assembler SunCore library Window manager Miscellaneous Peripherals CPU I/O Ports (2) RS-423 serial I/O Speed CPU Clock SCSI Bus SCSI I/O Ports I/O Speed (RS-232C compatible) 19.2 Kbps output, 9.6 Kbps input, asynchronous Time-of-day and date with battery backup Single-host subset (4) RS-423 serial (RS-232C compatible) 19.2 Kbps output, 9.6 Kbps input, asynchronous Floating Point Processor Option Data Format IEEE-754 standard Precision 32-bit single, 64-bit double Color Display Option Monitor Format Resolution Refresh Rate Interface Tape Options Media Type Drive Type Operating Mode Capacity Interface Media Type Drive Type Operating Mode Capacity Interface Regulatory RFI Emissions Safety Approval Facility Planning Temperature Humidity AC Voltage AC Frequency Cable Length 13- or 19-inch landscape 640 x 480 x 8 60 Hz, interlaced 511-line RS-170 (Red, Green, Blue, Sync) i^-inch cartridge 8000 bpi, 4-track 90 ips, streaming 20 MB per cartridge SCSI to QIC-II V^-inch reel 1600 bpi, 9-track 25 ips, start-stop 45 MB per reel Pertec FCC Class A, VDE Class A (pending) UL approved, CSA Certified (pending) 5° to 40°C(41°to 104°F) 5 to 80%, non-condensing 95-125 or 210-250 VAC 48 to 62 Hz 15 ft. from pedestal to monitor, keyboard, mouse Sun-2/120 Sun-2/170 Multibus Card Slots 9 (4 used standard) 15 (5 used standard) Power Supply Output 450 watts (card cage only) 750 watts Standard Main Memory 1 megabyte 2 megabytes Formatted Disk Capacity 42 MB 130 MB 65 MB 130 MB 380 MB Winchester Platter Size 5V4" 8" 8" 14" 10!/2" Unformatted Capacity 50 MB 168 MB 84 MB 169 MB 474 MB Controller Interface SCSI SMD SMD SMD SMD Average Seek Time 33 ms. 20 ms. 20 ms. 27 ms. 18 ms. Average Latency Time 8.3 ms. 8.3 ms. 8.3 ms. 10.1 ms. 7.5 ms. Average Access Time 41.3 ms. 28.3 ms. 28.3 ms. 37.1 ms. 25.5 ms. Data Transfer Rate 5 Mbps 10 Mbps 10 Mbps 10 Mbps 10 Mbps i Specifications 19-inch Color Monitor 380 MB Winchester Disk Drive l/2-inch Tape Drive DIMENSIONS and POWER Component Height Width Depth Weight Power Heat 120 Pedestal 73.7 cm (29.0") 24.1 cm (9.5") 54.6cm (21.5") 41.8 kg (92 lb.) 750 watts 2560 BTU/hr. 170 Enclosure 45.7 cm (18.0") 48.3 cm (19.0") 53.3 cm (21.0") 27.3 kg (60 lb.) 750 watts 2560 BTU/hr. Monochrome Display 49.5 cm (19.5") 53.3 cm (21.0") 40.6 cm (16.0") 27.7 kg (61 lb.) 100 watts 340 BTU/hr. Keyboard 3.8 cm (1.5") 53.3 cm (21.0") 21.6 cm (8.5") 2.3 kg (5 lb.) N/A N/A Mouse Pad N/A 27.9 cm (11.0") 22.9 cm (9.0") N/A N/A N/A 13-inch Color 26.7 cm (10.5") 40.6 cm (16.0") 36.8 cm (14.5") 20.5 kg (45 lb.) 100 watts 340 BTU/hr. 19-inch Color 47.0 cm (18.5") 45.7 cm (18.0") 53.3 cm (21.0") 43.2 kg (95 lb.) 150 watts 515 BTU/hr. 130 MB Disk (Pedestal) 73.7 cm (29.0") 24.1 cm (9.5") 54.6 cm (21.5") 54.5 kg (120 lb.) 340 watts 1160 BTU/hr. 65 MB Disk (Rack) 17.8 cm (7.0") 49.5 cm (19.5") 63.5 cm (25.0") 38.6 kg (85 lb.) 170 watts 580 BTU/hr. 130 MB Disk (Rack) 26.7 cm (10.5") 48.3 cm (19.0") 66.0 cm (26.0") 71.4kg(157 lb.) 330 watts 1130 BTU/hr. 380 MB Disk (Rack) 26.7 cm (10.5") 48.3 cm (19.0") 71.1 cm (28.0") 62.0 kg (137 lb.) 550 watts 1880 BTU/hr. V^-inchTape 61.0 cm (24.0") 48.3 cm (19.0") 40.6 cm (16.0") 51.8 kg (114 lb.) 275 watts 940 BTU/hr. ^-inchTape 17.8 cm (7.0") 49.5 cm (19.5") 63.5 cm (25.0") 29.5 kg (65 lb.) 170 watts 580 BTU/hr. Sun-2/120 Desktop Components Sun-2/120 Deskside Component Sun-2/170 Specifications are subject to change without notice. N. California District 3803 East Bayshore Road Palo Alto, CA 94303 415 965-7800 Southwest District New England District 1040 Waltham Street Lexington, MA 02173 617 863-8870 Rocky Mountain District 1333 W. 120th Avenue Suite 200 Denver, CO 80234 303 450-2324 New York District Two Executive Drive Fort Lee, NJ 07024 201944-9755 South Central District 5485 Beltline Suite 100 Dallas,TX 75240 214 788-1951 1116-A 8th Street Box 29 Manhattan Beach, CA 90266 213 545-6300 Northwest District 1300114th Ave. S.E.,Ste. 200 Bellevue, WA 98004 206 451-8449 San Diego Sales Office 1380 Garnet Avenue Suite E-131 San Diego, CA 92109 619 272-7066 ♦sun microsystems Corporate Headquarters 2550 Garcia Avenue Mountain View, CA 94043 800 821-4643 In CA: 800 821-4642 TLX 469327 UNIX is a trademark of Bell Laboratories. Multibus is a registered trademark of Intel Corporation. Ethernet is a registered trademark of Xerox Corporation. DEC and VAX are registered trademarks of Digital Equipment Corporation. Sun Microsystems and Sun Workstation are registered trademarks of Sun Microsystems, Inc. Sun-2, Sun-2/xxx, Deskside, SunStation, SunCore, SunWindows, and DVMA are trademarks of Sun Microsystems, Inc. Design: Russell Leong Design Photography: David Campbell Printing: Thomson Lithograph © 1983 Sun Microsystems, Inc. Printed in USA 11/83 BB100/20K