HPE Integrity Servers
HPE Integrity is a series of server computers produced by Hewlett Packard Enterprise (formerly Hewlett-Packard) since 2003, based on the Itanium processor. The Integrity brand name was inherited by HP from Tandem Computers via Compaq.

In 2015 HP released the Superdome X line of Integrity Servers based on the x86 Architecture. It is a 'small' Box holding up to 8 dual Socket Blades and supporting up to 16 processors/240 cores (when populated with Intel Xeon E7-2890 or E7-2880 Processors).

General
Over the years, Integrity systems have supported Windows Server, HP-UX 11i, OpenVMS, NonStop, Red Hat Enterprise Linux and SUSE Linux Enterprise Server operating systems on Integrity servers. As of 2020 the operating systems that are supported are HP-UX 11i, OpenVMS and NonStop.

Early Integrity servers were based on two closely related chipsets. The zx1 chipset supported up to 4 CPUs and up to 8 PCI-X busses. They consisted of three distinct application-specific integrated circuits; a memory and I/O controller, a scalable memory adapter and an I/O adapter. The PA-8800 and PA-8900 microprocessors use the same bus as the Itanium 2 processors, allowing HP to also use this chipset for the HP 9000 servers and C8000 workstations.

The memory and I/O controller can be attached directly to up to 12 DDR SDRAM slots. If more slots than this are needed, two scalable memory adapters can be attached instead, allowing up to 48 memory slots. The chipset supports DIMM sizes up to 4 GB, theoretically allowing a machine to support up to 192 GB of RAM, although the largest supported configuration was 128 GB.

The sx1000 chipset supported up to 64 CPUs and up to 192 PCI-X buses. The successor chipsets were the zx2 and sx2000 respectively.

Entry-level servers

rx1600 series

The 1U rx1600 server is based on the zx1 chipset and has support for one or two 1 GHz Deerfield Itanium 2 CPUs.
The 1U rx1620 server is based on the zx1 chipset and has support for one or two 1.3/1.6 GHz Fanwood Itanium 2 CPUs.

Common for the series is:

 Memory: Up to 8 DIMMs
 Storage: Dual-channel Ultra-320 SCSI controller with support for two hot-swappable Ultra 320 drives
 One external Ultra 320 SCSI port
Network:10/100/1000BaseTX LAN port
An additional 10/100BaseTX LAN port
 General-purpose RS-232 serial port
 Possibility for redundant power supplies
 Two USB ports
 Two PCI-X slots

Optional features are:

 SCSI RAID controller
 Management processor card (required for support of Windows Server 2003)
 CD/DVD-ROM (required for installation of Windows Server 2003 and OpenVMS)

The series support five operating systems:

 HP-UX 11i v2 or later
 OpenVMS for Itanium
 Windows Server 2003 for Itanium
 Windows Server 2008 for Itanium
 Linux with kernel that supports Itanium

rx2600 series

The 2U rx2600 server is based on the zx1 chipset and has support for one or two 1.0/1.4 GHz Deerfield/Madison, 1.3 GHz Madison or 1.5 GHz Madison CPUs.
The 2U rx2620 server is based on the zx1 chipset and has support for one or two 1.6 GHz Fanwood/Madison or 1.4/1.6 GHz Montecito CPUs.
The 2U rx2660 server is based on the zx2 chipset and has support for one or two 1.6 GHz Montvale or 1.42/1.66 GHz Montvale CPUs.

Common for the series is:

 Memory: Up to 12 DIMMs (8 DIMMs for the rx2660)
 Storage: Dual channel Ultra 320 SCSI controller with support for two internal hard drives
 Support for three hot-swappable Ultra 320 drives
 One external Ultra 320 SCSI port
 Network: 10/100/1000BaseTX LAN port
 Two general-purpose RS-232 serial ports
 Possibility for redundant power supplies
 Two USB ports
 Four PCI-X slots

Optional features are:

 SCSI RAID controller
 Management processor card (required for support of Windows Server 2003)
 CD/DVD-ROM (Required for installation of Windows Server 2003 and OpenVMS)

The series support four operating systems:

 HP-UX 11i v2 or later
 OpenVMS for Itanium
 Windows Server 2003 for Itanium
 Linux with kernel that supports Itanium

rx2800 series

The 2U rx2800 i2 server used  the Intel Itanium 9300 series chipset with 8, 4 or 2 processor cores available.
Among features common for the series:

 Memory: Up to 24 DIMMs
 Storage: HP p410i 3 Gb SAS Controller
 Support for 8 hot-plug Serial Attached SCSI (SAS) small form factor (SFF) 2.5 inch drives
 Network: Quad port 10/100/1000 Base TX LAN
 Six expansion slots

The series supports three operating systems: HP-UX 11i v3, OpenVMS v 8.4 for Itanium, and Windows Server for Itanium.

rx3600

The 4U rx3600 is based on the zx2 chipset and has two CPU sockets which support Montecito or Montvale processors.  It supports up to 96 GB of main memory, using 24 four-gigabyte DIMMs.

Standard features include:

 Memory: Up to 24 ECC memory PC2 4200 DDR2 DIMMs (with two optional 12-slot memory carrier boards)
Storage: Eight 2.5" Serial Attached SCSI (SAS) disk-drive slots
 8-port SAS host bus adapter, supporting two RAID 1 volumes and a hot spare
 Network: Dual-port 10/100/1000Base TX LAN
 Integrated HP Integrated Lights-Out2 (iLO) management processor
 Choice of I/O backplane: PCI-X with 8 available PCI-X slots, or the PCI Express I/O backplane, containing 4 x8 PCI Express slots, and 4 PCI-X slots.  The system also has 2 reserved PCI-X slots, one of which is used for a PCI-X dual-port 10/100/1000Base TX LAN card, and the other is reserved for an optional internal Smart Array RAID card.
 N+1 hot-swappable fans
 Hot-swappable power supply
 Hot-swappable PCI-X I/O cards

Optional features:

 up to 8 SAS disk drives, with support for up to 72 GB 15K-RPM or 146 GB 10K-RPM disks.
 Redundant hot-swappable power supply
 8-port HP Smart Array P400 or P600, or 16-port P800 SAS RAID controllers available for internal disks, supporting RAID 1/5/6 and hot spare disks.

rx4600 series

The 7U rx4610 utilizes Itanium 1 CPUs with support for up to four single-core CPUs, 64GB RAM and 10 PCI 64-bit slots.
The 4U rx4640 utilizes Itanium 2 CPUs with support for up to four dual-core CPUs, 128 GB RAM and 6 PCI-X slots.

Both of these models come with integrated USB and video as default, which enables support for Microsoft Windows operating systems.
The rx4640 is architecturally the same box as the rp4440, and can be changed from PA-RISC to Itanium 2 support with the flip of a switch.

rx5670

The discontinued 7U rx5670 server has four CPU sockets which support McKinley and Madison processors.  It is zx1-based and can have up to 48 DIMM slots, supporting 256 MB to 2 GB DIMMs which must be loaded in matched sets of four (quads).  It has 9 PCI-X slots and 1 PCI slot available.

rx6600

The 7U rx6600 is based on the zx2 chipset and has four CPU sockets that support Montecito and Montvale CPUs. It supports 384 GB memory using 48 eight-gigabyte DIMMs.

Standard features include:

 Memory: Up to 48 ECC memory PC2 4200 DDR2 DIMMs (with the 48-slot memory board)
 Storage: Sixteen 2.5" SAS disk drive slots
 8-port SAS host bus adapter, supporting two RAID 1 volumes and a hot spare
 Network: Dual-port 10/100/1000Base TX LAN
 Integrated iLO2 management processor
 Choice of I/O backplane: PCI-X with 8 available PCI-X slots, or the PCI Express I/O backplane, containing 4 x8 PCI Express slots, and 4 PCI-X slots.  The system also has 2 reserved PCI-X slots, one of which is used for a PCI-X dual-port 10/100/1000Base TX LAN card, and the other is reserved for an optional internal Smart Array RAID card.
 N+1 hot-swappable fans
 Hot-swappable power supply
 Hot swappable PCI-X I/O cards

Optional features:

 Up to 16 SAS disk drives, with support for 72 GB 15K-RPM / 146 GB 10K-RPM or 300 GB 10K-RPM disks
 Redundant hot swappable power supply
 8-port HP Smart Array P400 or P600, or 16-port P800 SAS RAID controllers available for internal disks, supporting RAID 1/5/6 and hot-spare disks

Mid-range servers

HP's mid-range and high-end (Superdome) servers are based on cell boards, sometimes called cells, which contain the chipset, Processors, memory, and I/O bus.  This design allows the servers to be divided into hardware partitions, or groups of cell boards.  Each partition is able to perform as if it were a separate server.

rx7600 series

The 10U rx7620 is based on the SX1000 chipset which supports both PA-RISC and Itanium 2 CPUs.
The 10U rx7640 is based on the SX2000 chipset which supports both PA-RISC and Itanium 2 CPUs.

 Maximum of 2 cell boards
 4 CPU sockets per cell board
 16 DIMM slots per cell board
 Maximum of 4 SCSI disks and 2 tape and/or CD/DVD-ROM internally (half to each cell board)
 7 hot-pluggable I/O slots per cell board plus 1 core I/O slot per cell board for SX1000

The rx7600 series are the smallest cell-based servers from HP. Just like the bigger rx8600 (see below) and the HP Superdome (see below), these servers can be partitioned, either as one big partition (two cells in one partition) or as two independent cells.

rx8600 series

The 17U rx8620 is based on the SX1000 chipset which supports both PA-RISC and Itanium 2 CPUs.
The 17U rx8640 is based on the SX2000 chipset which supports both PA-RISC and Itanium 2 CPUs.

 The rx8620 was announced in 2003, along with the rx4640 and rx7620
 Maximum of four cell boards
 Four CPU sockets per cell board
 16 DIMM slots per cell board
 Maximum of four SCSI disks and two tape and/or CD/DVD-ROM internally (half to cell board 0, half to cell board 1)
 Eight hot-pluggable I/O-slots per cell board and 1 core I/O slot per cell board for SX1000

Just like the smaller rx7600 (see above) and the HP Superdome (see below), the rx8600 can be partitioned using any combination of the four available cell boards (minimum of one, maximum of four separated partitions).

The maximum number of partitions is four when used with an I/O-expander unit. Because each partition requires an available I/O slot, and the rx8600 series' integrated I/O-chassis statically maps its two I/O slots to cell board 0 and 1, an rx8600 series system is limited to two partitions unless an IOX is installed.

Cells can be freely moved from a rx7600 series to a rx8600 series as long as the chipset is the same on the cells, and the firmware is compatible.

High-end servers

Superdome

The Superdome server is available in several models, including the SD-16, SD-32, and SD-64. HP announced Superdome 2 in April 2010, offering resiliency improvements, a modular, bladed design, common components and crossbar fabric that routes transactions to the optimal pathway between blades and I/O. Superdome 2 addresses requirements for high-performance computing by providing flexible scalability and fault tolerance necessary for mission-critical workloads.

In November 2011 HP announced Project Odyssey, a development roadmap to unify server architectures on a single platform.  The roadmap includes blades with Intel Xeon processors for the HP Superdome 2 enclosure (code name “DragonHawk”) and the scalable c-Class blade enclosures (code named “HydraLynx”), while supporting Windows and Linux environments with features from HP-UX within the next two years.

References

External links
 HPE Integrity Servers official web page

Integrity
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