The x3690 X5 is an outstanding 2U two-socket 
mission-critical server, offering outstanding performance, superior 
reliability, and fault-tolerant memory characteristics.
Lenovo has been designing and implementing servers under the 
X-Architecture® name since 2001. eX5 technology represents the fifth 
generation of enterprise servers based on the same design principle 
Lenovo began with in 1997: to offer systems that are expandable, offer 
“big iron” reliability, availability, and serviceability (RAS) features,
 with extremely competitive price/performance on an Intel Xeon 
processor-based system.
Scalability and performance
The x3690 X5 offers numerous features to boost performance, improve scalability, and reduce costs:
- The x3690 X5 supports up to two high-performance Intel Xeon E7 family allowing you to upgrade as business needs require.
- Supports the Intel Xeon E7-2800, E7-4800 and E7-8800 families of 
high performance processors, up to 10 cores each, offering superior 
system performance
- Intel Turbo Boost Technology dynamically turns off unused processor
 cores and increases the clock speed of the cores in use, by up to three
 model frequencies. For example, with 7-10 cores active, a 2.4 GHz 
E7-2870 10-core processor can run the cores at up to 2.53 GHz. With 5-6 
cores active, it can run those cores at 2.67 GHz; with only 1-4 cores 
active, it can run those cores at 2.8 GHz
- Each processor includes two integrated memory controllers, to 
reduce memory bottlenecks and improve performance. Memory access is at 
up to 1066 MHz frequency, depending on the processor model and memory 
used.
- The MAX5 V2 adds an additional four memory controllers for a total 
of eight memory controllers to maximize memory parallelism and 
performance.
- In processors implementing Hyper-Threading technology, each core 
has two threads capable of running an independent process. Thus, an 
8-core processor can run 16 threads concurrently.
- Intel’s Virtualization Technology (VT) integrates hardware-level 
virtualization hooks that allow operating system vendors to better 
utilize the hardware for virtualization workloads.
- Intel QuickPath Interconnect (QPI) technology for 
processor-to-processor connectivity and Intel Scalable Memory 
Interconnect (SMI) processor-to-memory connectivity:
	- Intel QPI link topology at up to 6.4 Gbps with four QPI links per CPU
- Intel SMI link topology at up to 6.4 Gbps with four SMI links per CPU
 
- Up to 32 dual inline memory modules (DIMMs) in the base system (16 
on the system planar and 16 on an optional memory mezzanine inside the 
server), plus an additional 32 DIMMs with an optional 1U MAX5 V2 memory 
expansion unit, for a total of 64 DIMM sockets.
- Support for 32 GB DIMMs for a maximum of 2 TB per x3690 X5 with MAX5 V2
- The use of solid-state drives (SSDs) instead of, or along with, 
traditional spinning drives (HDDs) can significantly improve I/O 
performance. An SSD can support up to 100 times more I/O operations per 
second (IOPS) than a typical HDD.
- Up to 24 1.8-inch SSD bays, or up to 16 2.5-inch bays together with
 the option of an optical drive, provide a flexible and scalable 
all-in-one platform to meet your increasing demands.
Availability and serviceability
The x3690 X5 provides many features to simplify serviceability and increase system uptime:
- Support for machine check architecture (MCA) recovery, a feature
 of the Intel Xeon processor E7 family, which enables the handling of 
system errors that otherwise require the operating system to be halted. 
SAP HANA is one of the first application which leverages the MCA 
recovery to handle system errors in order to prevent the application 
from being terminated in case of a system error.
- Extensive memory protection with Chipkill, and, with DIMMs 
containing x4 DRAM modules, Redundant Bit Steering (RBS) (also known as 
Double Device Data Correction or DDDC) is also supported . The 
combination of Chipkill and RBS provides very robust memory protection 
that sustains to two sequential memory DRAM chip failures without 
affecting overall system performance.
- Redundant CPU-to-I/O hub interconnect links provide ability to 
self-recover from CPU failure. If primary CPU fails then eX5 systems can
 use the second CPU to boot the OS as they still have access to the 
integrated I/O devices because of redundant links between CPUs and I/O 
hubs.
- Memory mirroring and memory rank sparing for redundancy in the event of a non-correctable memory failure.
- Hot-swap drives, supporting RAID redundancy for data protection and greater system uptime.
- Four redundant hot-swap power supplies and five redundant hot-swap 
fans to provide availability for business-critical applications.
- The power source independent light path diagnostics panel and 
individual light path LEDs quickly lead the technician to failed (or 
failing) components, which simplifies servicing, speeds up problem 
resolution, and helps improve system availability.
- Predictive Failure Analysis (PFA) detects when system components 
(processors, VRMs, memory, HDDs, fans, and power supplies) operate 
outside of standard thresholds and generates proactive alerts in advance
 of a possible failure, therefore increasing uptime.
- Solid-state drives (SSDs) offer significantly better reliability than traditional mechanical HDDs for greater uptime.
- Built-in Integrated Management Module Version II (IMM2) 
continuously monitors system parameters, triggers alerts, and performs 
recovering actions in case of failures to minimize downtime.
- Built-in diagnostics, using Dynamic Systems Analysis (DSA) Preboot, speed up troubleshooting tasks to reduce service time.
- Three-year customer-replaceable unit and on-site limited warranty, 
9x5 next business day. Optional service upgrades are available.
Manageability and security
Powerful systems management features simplify local and remote management of the x3690 X5:
- The server includes an Integrated Management Module (IMM) to monitor server availability and perform remote management.
- Integrated industry-standard Unified Extensible Firmware Interface 
(UEFI) enables improved setup, configuration, and updates, and 
simplifies error handling.
- Integrated Trusted Platform Module (TPM) 1.2 support enables 
advanced cryptographic functionality, such as digital signatures and 
remote attestation.
- IBM Systems Director is included for proactive systems management. 
It offers comprehensive systems management tools that help to increase 
uptime, reduce costs, and improve productivity through advanced server 
management capabilities.
Energy efficiency
The x3690 X5 offers the following energy-efficiency features to save 
energy, reduce operational costs, increase energy availability, and 
contribute to the green environment:
- Energy-efficient planar components help lower operational costs.
- Support for one, two or four highly efficient 675 W ac power 
supplies allows for efficient use and scalability to meet the power 
requirements of the installed components.
- Intel Xeon processor E7-2800/4800/880 product family offers 
significantly better performance over the previous generation while 
fitting into the same thermal design power (TDP) limits.
- Low-voltage Intel Xeon processors draw less energy to satisfy the 
demands of power and thermally constrained data centers and 
telecommunication environments.
- Low-voltage 1.35 V DDR3 memory RDIMMs consume 15% less energy compared to 1.5 V DDR3 RDIMMs.
- Solid state drives (SSDs) consume as much as 80% less power than traditional spinning 2.5-inch HDDs.
- The server uses hexagonal ventilation holes, which is a part of 
Calibrated Vectored Cooling technology. Hexagonal holes can be grouped 
more densely than round holes, providing more efficient airflow through 
the system.
- IBM Systems Director Active Energy Manager™ provides advanced data 
center power notification and management to help achieve lower heat 
output and reduced cooling needs.