Sun-4 is a series of Unix workstations and servers produced by Sun Microsystems, launched in 1987. The original Sun-4 series were VMEbus-based systems similar to the earlier Sun-3 series, but employing microprocessors based on Sun's own SPARC V7 RISC architecture in place of the 68k family processors of previous Sun models.
Sun 4/280 was known as base system that was used for building of first RAID prototype.[1]
Models are listed in approximately chronological order.
| Model | Codename | CPU board | CPU | CPU MHz | Max. RAM | Chassis | |
|---|---|---|---|---|---|---|---|
| 4/260 | Sunrise | Sun 4200 | Fujitsu SF9010 IU, Weitek 1164/1165 FPU | 16.67 MHz | 128 MB | 12-slot VME (deskside) | |
| 4/280 | Sunrise | Sun 4200 | Fujitsu SF9010 IU, Weitek 1164/1165 FPU | 16.67 MHz | 128 MB | 12-slot VME (rackmount) | |
| 4/110 | Cobra | Sun 4100 | Fujitsu MB86900 IU, Weitek 1164/1165 FPU (optional) | 14.28 MHz | 32 MB | 3-slot VME (desktop/side) | |
| 4/150 | Cobra | Sun 4100 | Fujitsu MB86900 IU, Weitek 1164/1165 FPU (optional) | 14.28 MHz | 32 MB | 6-slot VME (deskside) | |
| 4/310 | Stingray | Sun 4300 | Cypress Semiconductor CY7C601, Texas Instruments 8847 FPU | 25 MHz | 32 MB | 3-slot VME (desktop/side) | |
| 4/330 | Stingray | Sun 4300 | Cypress Semiconductor CY7C601, Texas Instruments 8847 FPU | 25 MHz | 96 MB | 3-slot VME w 2 memory slots (deskside) | |
| 4/350 | Stingray | Sun 4300 | Cypress Semiconductor CY7C601, Texas Instruments 8847 FPU | 25 MHz | 224 MB | 5-slot VME (desktop/side) | |
| 4/360 | Stingray | Sun 4300 | Cypress Semiconductor CY7C601, Texas Instruments 8847 FPU | 25 MHz | 224 MB | 12-slot VME (deskside) | |
| 4/370 | Stingray | Sun 4300 | Cypress Semiconductor CY7C601, Texas Instruments 8847 FPU | 25 MHz | 224 MB | 12-slot VME (deskside) | |
| 4/380 | Stingray | Sun 4300 | Cypress Semiconductor CY7C601, Texas Instruments 8847 FPU | 25 MHz | 224 MB | 12-slot VME (rackmount) | |
| 4/390 | Stingray | Sun 4300 | Cypress Semiconductor CY7C601, Texas Instruments 8847 FPU | 25 MHz | 224 MB | 16-slot VME (rackmount) | |
| 4/470 | Sunray | Sun 4400 | Cypress Semiconductor CY7C601, Texas Instruments 8847 FPU | 33 MHz | 768 MB | 16-slot VME (deskside) | |
| 4/490 | Sunray | Sun 4400 | Cypress Semiconductor CY7C601, Texas Instruments 8847 FPU | 33 MHz | 768 MB | 12-slot VME (rackmount) |
In 1989, Sun dropped the "Sun-4" name for marketing purposes in favor of the SPARCstation and SPARCserver brands for new models, although early SPARCstation/server models were also assigned Sun-4-series model numbers. For example, the SPARCstation 1 was also known as the Sun 4/60. This practice was phased out with the introduction of the SPARCserver 600MP series in 1991. The term Sun-4 continued to be used in an engineering context to identify the basic hardware architecture of all SPARC-based Sun systems.
Sun 4/110, 4/150, 4/260 and 4/280 systems upgraded with the Sun 4300 CPU board (as used in the SPARCserver 300 series) were referred to as the 4/310, 4/350, 4/360 and 4/380 respectively.
The Sun-4 architecture refers to the VME-based architecture described above and used in the Sun 4/100, 4/200, SPARCserver 300 and SPARCserver 400 ranges. Sun-4 support was included in SunOS 3.2 onwards and Solaris 2.1 to 2.4. OpenBSD[2] and NetBSD[3] also will run on the Sun-4 architecture families.
Several variations on the Sun-4 architecture were subsequently developed and used in later computer systems produced by Sun and other vendors. These comprised: