IBM Power 795 server

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Highlights

  • For large-scale server consolidation to increase flexibility, yet lower operational and energy cost
  • For enterprises requiring the highest levels of resiliency for their mission-critical applications
  • For data centres supporting the largest UNIX® and IBM® i transaction processing and database applications.

Every large enterprise (LE) relies on critical information. This information is derived from financial data, customer data and enterprise resource data that are held across multiple lines of business (LOB). Insights from this enterprise-wide critical information fuel both the core business processes and new services that redefine the customer experience in the LE. To transform the management of this critical information and processes, these organisations rely on enterprise systems that are at the centre of their IT infrastructure. These enterprise systems are defined by their ability to deliver trusted information across the enterprise, ensuring continuous transaction availability and enabling real time business analytics. They provide the highest levels of security, ensuring the integrity of critical information while mitigating risk and meeting regulatory compliance mandates. And they deliver the utmost in infrastructure efficiency at enterprise scale, with flexible delivery models and dynamic resource management that can increase utilisation while reducing operational costs.

The IBM Power 795 server is one of these enterprise systems. The Power 795 supports large-scale transaction processing and database applications within a highly virtualised system infrastructure, enabling new levels of workload consolidation, resource utilisation, resiliency and efficiency. As the most powerful member of the IBM Power Systems family, this server provides exceptional performance, massive scalability and bandwidth to efficiently and concurrently support a full range of complex, mission-critical applications.

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Feature Benefits
Exceptional POWER7 performance
  • Improve response time, transaction processing efficiency and user productivity
  • Infrastructure cost savings from a reduction in the number of servers and software costs
Extraordinary scalability and capacity
  • Deliver data faster for the needs of large-scale transaction processing and memory-intensive applications
  • Realise new levels of efficiency in operations from consolidating multiple workloads on fewer systems and enable new applications without adding new servers
  • High-density 24 in. system frame enables the most efficient, large-scale consolidation and maximum growth
  • Offer flexibility and built-in redundancy so the system can grow with your business
Mission-critical reliability
  • Designed to provide the highest levels of Power architecture RAS for around-the-clock access to enterprise applications
  • Increases IT productivity by avoiding costly downtime and recovery
  • Can enable monitoring, detection and resolution of issues without disruption
  • Participation in the Power System Pool offering that can dramatically reduce planned downtime
Enterprise-class PowerVM virtualisation
  • Improves system efficiency to lower operational expense
  • Provides flexibility to rapidly respond to changing business requirements, including reallocation of system resources without rebooting affected partitions
  • Provides the ability to transparently share processing power and memory between partitions and to handle unexpected workload peaks by sharing resources
  • Enables energy savings and maintains application availability
Flexibility with CoD
  • Enables seamless growth by allowing standby processors and memory to be permanently added to meet long term workload growth
  • Provides temporary access to additional processors and memory to respond rapidly to changing business requirements
EnergyScale innovation
  • Helps lower data centre energy costs without sacrificing performance or business flexibility
  • Enables management to understand power and cooling usage and better predict peak requirements
Broad business application support
  • Provides the flexibility to select the right OS and the right applications to meet needs
  • Enables enterprises to consolidate applications onto a more scalable, cost-effective system
Processor cores (maximum) 192 POWER7 3.72 GHz processors
256 POWER7 4.00 GHz processors
128 POWER7 4.25 GHz processors (TurboCore)
Processor books Up to eight
Sockets Up to 32
Level 2 (L2) cache 256 kilobyte (KB) L2 cache per core
Level 3 (L3) cache 4 megabyte (MB) L3 cache per core (eDRAM) or
8 MB L3 cache per core (eDRAM)
RAM (memory) 32 DIMMs per processor book
Up to 16 TB of 1066 MHz DDR-3
PCIe I/O drawers 24 in.: One – 32
Internal disk bays 26 SAS SFF bays in each 24 in. PCIe I/O drawer
Up to 832 maximum per system in 24 in. drawers
Up to 2,220 bays in 19 in. drawers
Adapter slots 20 PCIe in each 24 in. I/O drawer
640 maximum per system
I/O ports Four GX++ adapter ports per processor book, 32 per system
Hardware Management Console (HMC) ports Two pairs via redundant Ethernet hubs
POWER Hypervisor LPAR, DLPAR, Virtual local area network (VLAN)
PowerVM Standard Edition (optional) Micro-Partitioning with up to 20 micro-partitions per processor (1,000 maximum); Multiple Shared Processor Pools; VIOS; Shared Dedicated Capacity; PowerVM Lx86
PowerVM Enterprise Edition* (optional) PowerVM Standard Edition plus LPM and AMS
RAS features Processor Instruction Retry
Alternate Processor Recovery
Selective dynamic firmware updates
IBM Chipkill ECC, bit-steering memory
ECC L2 cache, L3 cache
Redundant service processors with automatic failover
Redundant system clocks with dynamic failover
Hot-swappable disk bays
Hot-plug/blind-swap PCI slots
Hot-add I/O drawers
Hot-plug power supplies and cooling fans
Dynamic Processor Deallocation
Dynamic deallocation of LPARs and PCI bus slots
Extended error handling on PCI slots
Redundant power supplies and cooling fans
Battery backup and redundant battery backup (optional)
CoD features (optional) Processor CUoD (in increments of one processor)
Memory CUoD (in increments of 1 GB)
Elastic Processor CoD
Elastic Memory CoD
Trial CoD
Utility CoD
OS AIX, IBM i and Linux for Power†
HA PowerHA family
Power requirements 200 V to 240 V; 380 V to 415 V; 480 V ac; 550 V dc
System dimensions One frame (slimline doors): 79.3 in. H x 30.5 in. W x 58.5 in. D (201.4 cm x 77.5 cm x 148.6 cm); weight: 2,551 lb (1157.2 kg)
One frame (acoustic doors): 79.3 in. H x 30.5 in. W x 71.1 in. D (201.4 cm x 77.5 cm x 180.6 cm); weight: 2,577 lb (1,168.9 kg)‡
Warranty (limited) Around-the-clock, same day response for one year; on-site (varies by country). Warranty service upgrades and maintenance are available

* Not supported on IBM i 5.4, 6.1.
† See Facts and Features for specific supported OS levels.
‡ Weight will vary when disks, adapters, additional frames and other peripherals are installed.

POWER7® means high performance, high capacity, and near linear scaling. The benchmark and performance data below demonstrate how IBM solutions can be optimized for a wide variety of workloads, each one providing you with performance you can count on.

Multiuser performance
Technology Chips Cores Threads GHz Partition Size rPerf* CPW**
POWER7 4 24 96 3.70 24 273.51 149,100
POWER7 8 48 192 3.70 24 547.02 288,500
POWER7 12 72 288 3.70 24 820.53  
POWER7 16 96 384 3.70 24 1,094.04  
POWER7 20 120 480 3.70 24 1,367.55  
POWER7 24 144 576 3.70 24 1,641.06  
POWER7 28 168 672 3.70 24 1,914.57  
POWER7 32 192 768 3.70 24 2,188.08  
POWER7 4 32 128 4.00 32 372.27 204,300
POWER7 8 64 256 4.00 32 744.54 399,200
POWER7 12 96 384 4.00 32 1,116.81  
POWER7 16 128 512 4.00 32 1,489.08  
POWER7 20 160 640 4.00 32 1,861.35  
POWER7 24 192 768 4.00 32 2,233.62  
POWER7 28 224 896 4.00 32 2,605.89  
POWER7 32 256 1,024 4.00 32 2,978.16  
POWER7 6 24 96 4.25 16 347.36 162,100
POWER7 8 32 128 4.25 16 463.14 218,400
POWER7 12 48 192 4.25 16 694.71  
POWER7 16 64 256 4.25 16 926.28  
POWER7 20 80 320 4.25 16 1,157.85  
POWER7 24 96 384 4.25 16 1,389.42  
POWER7 28 112 448 4.25 16 1,620.99  
POWER7 32 128 512 4.25 16 1,852.56  
POWER7 16 64 256 4.25 64 777.09  
POWER7 16 128 512 4.00 64 1,406.36  
POWER7 32 128 512 4.25 64 1,554.18  
POWER7 32 256 1,024 4.00 64 2,812.72  

SPEC CPU2006 performance
Technology Chips Cores Threads GHz OS SPEC
int_rate		 SPEC
fp_rate
POWER7 4 32 128 4.00 AIX 7.1 1,440  
POWER7 32 256 1,024 4.00 AIX 7.1 11,200 10,500
POWER7 32 256 1,024 4.00 SLES 11 SP1 10,900 10,400
POWER7 32 256 1,024 4.00 RHEL 6 11,300 10,500
POWER7 32 128 512 4.25 AIX 7.1 6,150 5,870
POWER7 32 128 512 4.25 SLES 11 SP1 6,130 5,860

SPECjbb2005 performance
Technology Chips Cores Threads GHz OS BOPS BOPS/jvm JVM
POWER7 32 256 1,024 4.00 AIX 7.1 21,058,767 82,261 256
POWER7 32 256 1,024 4.00 SLES 11 SP1 20,499,538 80,076 256

LINPACK performance
Technology Chips Cores Threads GHz OS HPC Gflops
HPC Peak
POWER7 32 256 256 4.00 AIX 7.1 6,653 8,487
POWER7 32 256 256 4.00 SLES 11 SP1 6,830 8,487
POWER7 32 256 256 4.00 RHEL 6,902 8,487
POWER7 32 128 128 4.25 AIX 7.1 3,676 4,358
POWER7 32 128 128 4.25 SLES 11 SP1 3,784 4,358

SAP performance - SD 2-Tier
Technology Chips Cores Threads GHz OS Number of Users Database ERP
Release		 Cert. Number
POWER7 16 128 512 4.00 AIX 7.1 70,032 DB2 9.7 6.0 EHP4
(Unicode)		 2010042
POWER7 32 256 1,024 4.00 AIX 7.1 126,063 DB2 9.7 6.0 EHP4
(Unicode)		 2010046

For details on these and all other benchmarks published by IBM Power Systems, see the Power Systems Performance Report (US).

For details on SPEC results, see http://www.spec.org/ (link resides outside of ibm.com)
For details on TPC results, see http://www.tpc.org/ (link resides outside of ibm.com)
For details on SAP benchmarks, see http://www.sap.com/benchmark (link resides outside of ibm.com)

The benchmarks and values shown herein were derived using particular, well configured, development-level computer systems. Actual system performance may vary and is dependent upon many factors including system hardware configuration and software design and configuration. Additional information about these benchmarks and associated trademarks (US).

* rPerf (Relative Performance) (US)

** CPW (Commercial Processing Workload) (US)

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Advantages

Companies embracing Smarter Computing are implementing IT infrastructure based on the IBM Power Systems platform that is designed for data, tuned to the task and managed with cloud technologies. With Power Systems, businesses can outpace their competitors by delivering services faster, differentiate their offerings by delivering higher quality services, and turn operational cost into investment opportunity by delivering services with superior economics.

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Hardware

Power Systems hardware provides the foundation for designing workload optimized systems in conjunction with software and expert domain knowledge. Power servers and blades are modular and scalable and designed from the chip through the software stack to help deliver new levels of business performance.

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Operating systems

Power servers deliver flexibility and choice of operating systems to enable your business to select the best applications for your business needs. Whether running 1, 2, or all 3 - coupled with PowerVM, they maximize the benefit of Power Systems in your business.

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System software

IBM's integrated approach to developing Systems and Systems Software stacks together delivers maximum utilization, availability, and flexibility helping you deliver new advantages in your business.

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Solutions

IBM and IBM Business Partner solutions exploit key benefits in Power Systems that help you deliver new capabilities and new competitive advantages to your business.

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Migrate to Power

Over the last five years thousands of Oracle and HP UNIX clients have migrated to POWER. Learn how Power Systems has helped them improve their business performance, reduce risk, and establish a more secure future.