HP9000 legacy servers
D-class
The D-class are entry-level and mid-range servers that succeeded the entry-level E-class servers and the mid-range G-, H-, I-class servers. The first models were introduced in late January 1996, comprising of the Model D200, D210, D250, D310 and D350. The Model D200 is a uniprocessor with a 75 MHz PA-7100LC microprocessor, support for up to 512 MB of memory and five EISA/HP-HSC slots. The Model D210 is similar, but it used a 100 MHz PA-7100LC. The Model D250 is dual-processor model and it used the 100 MHz PA-7100LC. It supported up to 768 MB of memory and had five EISA/HP-HSC slots. The Model D310 is a uniprocessor with a 100 MHz PA-7100LC, up to 512 MB of memory and eight EISA/HP-HSC slots. The Model D350 is a high-end D-class system, a dual-processor, it had two 100 MHz PA-7100LCs, up to 768 MB of memory and eight EISA/HP-HSC slots.
In mid-September 1996, two new D-class servers were introduced to utilize the new 64-bit PA-8000 microprocessor, the Model D270 uniprocessor and the Model D370 dual-processor. Both were positioned as entry-level servers. They used the 160 MHz PA-8000 and supported 128 MB to 1.5 GB of memory.[14]
In January 1997, the low-end Model D220, D230, D320 and D330 were introduced, using 132 and 160 MHz versions of the PA-7300LC microprocessor.[15]
The D-class are tower servers with up to two microprocessors and are architecturally similar to the K-class. They sometimes masquerade as larger machines as HP shipped them mounted vertically inside a large cabinet containing a power supply and multiple disks with plenty of room for air to circulate.
K-class
The PA-RISC-based HP 9000 K-Class Enterprise Server family delivers unmatched midrange performance with a robust, highly expandable UNIX®-based computing environment that is an excellent choice for a wide variety of enterprise-class applications including:
• Advanced Web hosting and e-commerce
• Data warehousing and data marts
• Decision support
• OLTP
The K-Class offers improved performance and remarkable scalability along with value-added investment protection.
Increased server performance by adding CPUs or upgrading to more powerful models.
K-Class family spans a 20X performance range through board upgrades with no box swaps.
K-Class systems run either 32-bit HP-UX 10.x or 64-bit HP-UX 11.0, and backwards compatibility with existing software when upgrading.
K Class offers:
• 72GB internal disk capacity
• 35TB external disk capacity
• 1 to 6 way PA-8200 (240MHz)
• easily handles I/O intensive application
R-class
The R-class is simply a D-class machine packaged in a rack-mount chassis. Unlike the D-class systems, it does not support hot-plug disks.
N-class
The N-class is a 10U rackmount server with up to eight CPUs and 12 PCI slots. It uses two Merced busses, one for every four processor slots. It is not a NUMA machine, having equal access to all memory slots. The I/O is unequal though; having one Ike IOMMU per bus means that one set of CPUs are closer to one set of I/O slots than the other.
The N-class servers were marketed as "Itanium-ready", although when the Itanium shipped, no Itanium upgrade was made available for the N class. The N class did benefit from using the Merced bus, bridging the PA-8x00 microprocessors to it via a special adapter called DEW.
The N4000 was upgraded with newer processors throughout its life, with models called N4000-36, N4000-44 and N4000-55 indicating microprocessor clock frequencies of 360, 440, and 550 MHz respectively.
The N-class was renamed to the rp7400 series in 2001.
L-class
The L-class servers are 7U rackmount machines with up to 4 CPUs (depending on model). They have 12 PCI slots, but only 7 slots are enabled in the entry-level L1000 system. Two of the PCI slots are occupied by factory integrated cards, and are cannot be utilized for I/O expansion by the end-user.
The L1000 and L2000 are similar to the A400 and A500, being based on an Astro/Elroy combination. They initially shipped with 360 MHz and 440 MHz PA-8500 and were upgraded with 540 MHz PA-8600.
The L3000 is similar to the N4000, being based on a DEW/Ike/Elroy combination. It shipped only with 550 MHz PA-8600 CPUs.
The L-class family was renamed to the rp5400 series in 2001.
A-class
The A180 and A180C were 32-bit, single-processor, 2U servers based on the PA-7300LC processor with the Lasi and Dino ASICs.
The A400 and A500 servers were 64-bit, single and dual-processor 2U servers based on the PA-8500 and later processors, using the Astro IOMMU and Elroy PCI adapters. The A400-36 and A500-36 machines used the PA-8500 processor running at 360 MHz; the A400-44 and A500-44 are clocked at 440 MHz. The A500-55 uses a PA-8600 processor running at 550 MHz and the A500-75 uses a PA-8700 processor running at 750 MHz.
The A-class was renamed to the rp2400 series in 2001.
S/X-class
The S- and X-class were Convex Exemplar SPP2000 supercomputers rebadged after HP's acquisition of Convex Computer in 1995. The S-class was a single-node SPP2000 with up to 16 processors, while the X-class name was used for multi-node configurations with up to 512 processors. These machines ran Convex's SPP-UX operating system.
V-class
The V-class servers were based on the multiprocessor technology from the S-class and X-class. The V2200 and V2250 support a maximum of 16 processors, and the V2500 and V2600 support a maximum of 32 processors. The V-class systems are physically large systems that require extensive cooling and three-phase power to operate. They provided a transitional platform between the T-class and the introduction of the Superdome.