IBM x3650 M4 Product Manual

I B M ®

IBM System x3650 M4

IBM Redbooks Product Guide

The IBM® System x3650 M4 server provides outstanding performance for your business-critical
applications. Its energy-efficient design supports more cores, memory, and data capacity in a scalable 2U
package that is easy to service and manage. With more computing power per watt and the latest Intel
Xeon processors, you can reduce costs while maintaining speed and availability.

Suggested use: database, virtualization, enterprise applications, collaboration/email, streaming media,
web, HPC, Microsoft RemoteFX, and cloud applications.

Figure 1 shows the IBM System x3650 M4.

Figure 1. The IBM System x3650 M4

Did you know?

The x3650 M4 offers a flexible, scalable design and simple upgrade path to 16 hard-disk drives (HDDs) or
solid-state drives (SSDs) plus optical and tape drives at the same time, with up to six PCIe Gen 3 slots
and up to 768 GB of memory. This flexible onboard Ethernet solution provides four standard embedded
Gigabit Ethernet ports and two optional embedded 10 Gb Ethernet ports without occupying PCIe slots.
Comprehensive systems management tools with the next-generation Integrated Management Module II
(IMM2) make it easy to deploy, integrate, service, and manage.

IBM System x3650 M4 1

Key features

The x3650 M4 is an outstanding 2U two-socket business-critical server, offering improved performance
and pay-as-you grow flexibility along with new features that improve server management capability. This
powerful system is designed for your most important business applications and cloud deployments.

Combining balanced performance and flexibility, the x3650 M4 is a great choice for small and medium
businesses up to the large enterprise. It can provide outstanding uptime to keep business-critical
applications and cloud deployments running safely. Ease of use and comprehensive systems
management tools make it easy to deploy. Outstanding RAS and high-efficiency design improve your
business environment and help save operational costs.

Scalability and performance

The x3650 M4 offers numerous features to boost performance, improve scalability, and reduce costs:



Intel Xeon processor E5-2600 v2 product family



Improves productivity by offering superior system performance with 4-core and 6-core processors
(up to 3.5 GHz core speeds), 8-core processors (up to 3.3 GHz core speeds), 10-core processors
(up to 3.0 GHz core speeds), and 12-core processors (up to 2.7 GHz core speeds), up to 30 MB
of L3 cache, and up to two 8 GT/s QPI interconnect links.



Supports up to two processors, 24 cores, and 48 threads maximize the concurrent execution of
multi-threaded applications.



Supports up to 1866 MHz memory speeds.



Will support up to 768 GB memory with 32 GB LRDIMMs or HCDIMMs when and if they become
available.



Intel Xeon processor E5-2600 product family



Improves productivity by offering superior system performance with 8-core processors and up to

2.9 GHz core speeds, up to 20 MB of L3 cache, and up to two 8 GT/s QPI interconnect links.



Supports up to two processors, 16 cores, and 32 threads maximize the concurrent execution of
multi-threaded applications.



Supports up to 1600 MHz memory speeds.



Supports up to 768 GB memory with 32 GB LRDIMMs or HCDIMMs.



Intelligent and adaptive system performance with Intel Turbo Boost Technology 2.0 allows CPU cores
to run at maximum speeds during peak workloads by temporarily going beyond processor TDP.



Intel Hyper-Threading Technology boosts performance for multi-threaded applications by enabling
simultaneous multi-threading within each processor core, up to two threads per core.



Intel Virtualization Technology integrates hardware-level virtualization hooks that allow operating
system vendors to better utilize the hardware for virtualization workloads.



Intel Advanced Vector Extensions (AVT) significantly improve floating-point performance for
compute-intensive technical and scientific applications.



Will support 12 Gbps SAS RAID portfolio when and if it becomes available.



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.

IBM System x3650 M4 2



Up to 32 1.8-inch SSD bays, or up to 16 2.5-inch bays, or up to 6 3.5-inch bays, together with internal
backup and an optical drive at the same time, provide a flexible and scalable all-in-one platform to
meet your increasing demands.



The server has four integrated Gigabit Ethernet ports and two optional 10 Gb Ethernet ports with
mezzanine cards that do not consume PICe slots.



The server offers PCI Express 3.0 I/O expansion capabilities that improve the theoretical maximum
bandwidth by almost 100% (8 GTps per link using 128b/130b encoding) compared to the previous
generation of PCI Express 2.0 (5 GTps per link using 8b/10b encoding).



With Intel Integrated I/O Technology, the PCI Express 3.0 controller is integrated into the Intel Xeon
processor E5 family. This integration helps to dramatically reduce I/O latency and increase overall
system performance.



Support for NVIDIA Quadro graphics processing units (GPUs) to maximize computing power

Availability and serviceability

The x3650 M4 provides many features to simplify serviceability and increase system uptime:



The server offers memory mirroring and memory rank sparing for redundancy in the event of a
non-correctable memory failure.



Tool-less cover removal provides easy access to upgrades and serviceable parts, such as CPU,
memory, and adapter cards.



The server offers hot-swap drives, supporting RAID redundancy for data protection and greater
system uptime.



The server has up to two redundant hot-swap power supplies and four hot-swap dual-motor redundant
fans (two fan zones with an N+1 fan design) 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 x3650 M4:



The server includes an Integrated Management Module II (IMM2) 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.

IBM System x3650 M4 3



Integrated Trusted Platform Module (TPM) 1.2 support enables advanced cryptographic functionality,
such as digital signatures and remote attestation.



Industry-standard Advanced Encryption Standard (AES) NI support for faster, stronger encryption.



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.



Intel Execute Disable Bit functionality can help prevent certain classes of malicious buffer overflow
attacks when combined with a supported operating system.



Intel Trusted Execution Technology provides enhanced security through hardware-based resistance
to malicious software attacks, allowing an application to run in its own isolated space, protected from
all other software running on a system.

Energy efficiency

The x3650 M4 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.



Highly efficient 550 W, 750 W, and 900 W AC power supplies with 80 PLUS Platinum certification.
Available 750W DC power option.



Intel Xeon processor E5-2600 and E5-2600 v2 product families offer significantly better performance
over the previous generation while fitting into the same thermal design power (TDP) limits.



Intel Intelligent Power Capability powers individual processor elements on and off as needed, to
reduce power draw.



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 IBM 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.

IBM System x3650 M4 4

Locations of key components and connectors

Figure 2 shows the front of the server.

Figure 2. Front view of the IBM System x3650 M4

Figure 3 shows the rear of the server.

Figure 3. Rear view of the IBM System x3650 M4

IBM System x3650 M4 5

Figure 4 shows the locations of key components inside the server.

Figure 4. Inside view of the IBM System x3650 M4

IBM System x3650 M4 6

Standard specifications

The following table lists the standard specifications.

Table 1. Standard specifications (part 1)

Components Specification

Form factor 2U Rack.

Processor E5-2600 v2: Up to two Intel Xeon processor E5-2600 v2 product family CPUs with 12 cores (up

to 2.7 GHz) or ten cores (up to 3.0 GHz) or eight cores (up to 3.3 GHz) or six cores (up to 3.5
GHz) or four cores (up to 3.5 GHz). Two QPI links up to 8.0 GT/s each. Up to 1866 MHz
memory speed. Up to 30 MB L3 cache.
E5-2600: Up to two Intel Xeon processor E5-2600 product family CPUs with eight cores (up to

2.9 GHz) or six cores (up to 2.9 GHz) or four cores (up to 3.3 GHz). Two QPI links up to 8.0
GT/s each. Up to 1600 MHz memory speed. Up to 20 MB L3 cache.

Chipset Intel C602J.

Memory Up to 24 DIMM sockets (12 DIMMs per processor).

E5-2600 v2: RDIMMs and UDIMMs are supported. Support for HyperCloud DIMMs and
LRDIMMs (Load Reduced DIMMs) is planned for later in 2013. Memory types cannot be
intermixed. Memory speed up to 1866 MHz.
E5-2600: RDIMMs, UDIMMs, HyperCloud DIMMs, and LRDIMMs (Load Reduced DIMMs) are
supported, but memory types cannot be intermixed. Memory speed up to 1600 MHz.

Memory
maximums

E5-2600 v2:



With RDIMMs: Up to 384 GB with 24x 16 GB RDIMMs and two processors



With UDIMMs: Up to 128 GB with 16x 8 GB UDIMMs and two processors



With HyperCloud DIMMs (support is planned for later in 2013): Up to 768 GB with 24x 32
GB HyperCloud DIMMs and two processors



With LRDIMMs (support is planned for later in 2013): Up to 768 GB with 24x 32 GB
LRDIMMs and two processors

E5-2600:



With RDIMMs: Up to 384 GB with 24x 16 GB RDIMMs and two processors



With UDIMMs: Up to 64 GB with 16x 4 GB UDIMMs and two processors



With HyperCloud DIMMs: Up to 768 GB with 24x 32 GB HyperCloud DIMMs and two
processors



With LRDIMMs: Up to 768 GB with 24x 32 GB LRDIMMs and two processors

Memory

ECC, Chipkill, memory mirroring, and memory rank sparing.

protection

Disk drive bays Up to 32 1.8" SSD bays, or 16 2.5" hot-swap SAS/SATA bays, or up to six 3.5" hot-swap

SAS/SATA bays, or up to eight 2.5" Simple Swap SATA bays, or up to six 3.5" Simple Swap
SATA bays.

Maximum
internal storage

Up to 19.2 TB with 1.2 TB 2.5" SAS HDDs, up to 16 TB with 1 TB 2.5" NL SAS/SATA HDDs, up
to 12.8 TB with 400 GB 1.8" SATA SSDs, up to 25.6 TB with 1.6 TB 2.5" SAS SSDs, or up to 24
TB with 4 TB 3.5" NL SAS/SATA HDDs. Intermix of SAS/SATA is supported.

RAID support 6 Gb SAS/SATA: RAID 0, 1, 10 with integrated M5110e or optional M5110; optional upgrades to

RAID 5, 50 are available (zero-cache; 512 MB battery-backed cache; 512 MB or 1 GB
flash-backed cache). Optional upgrade to RAID 6, 60 is available for M5110e or M5110 with 512
MB or 1 GB cache upgrades.
12 Gb SAS/SATA (support is planned for later in 2013): RAID 0, 1, 10 with optional M5210;
optional upgrades to RAID 5, 50 are available (zero-cache; 1 GB non-backed cache; 1 GB or 2
GB flash-backed cache). Optional upgrade to RAID 6, 60 is available for M5210 with 1 GB or 2
GB cache upgrades.

IBM System x3650 M4 7

Table 1. Standard specifications (part 2)

Components Specification

Optical drive

One bay for optional DVD-ROM or Multiburner drive.

bays

Tape drive bays Optional Tape Enablement Kit is available to support one DDS5, DDS6, or RDX internal USB

tape drive.

Network
interfaces

Four integrated Gigabit Ethernet 1000BASE-T ports (RJ-45); two embedded 10 Gb Ethernet
ports (10GBASE-T RJ-45 or 10GBASE-SR SFP+ based) on optional 10 Gb Ethernet mezzanine
card (does not consume PCIe slot).

PCI Expansion
slots

Up to six slots depending on the riser cards installed. The slots are as follows:



Slot 1: PCIe 3.0 x8; full-height, full-length



Slot 2: PCIe 3.0 x8; full-height, half-length



Slot 3: PCIe 3.0 x8; full-height, half-length



Slot 4: Optional, requires second processor and second riser card



Slot 5: Optional, requires second processor and second riser card



Slot 6: Optional, requires second processor and second riser card

Optional riser cards available with PCIe x8 or PCIe x16 or PCI-X slots.

Ports Two USB 2.0 and one DB-15 video on front. Four USB 2.0, one DB-15 video, one DB-9 serial,

one RJ-45 systems management, four RJ-45 GbE network ports, two optional RJ-45 or SFP+
10 GbE network ports on rear. Two internal USB ports (for embedded hypervisor and internal
tape drive).

Cooling IBM Calibrated Vectored Cooling™ with up to four redundant hot swap fans (three standard,

additional fan with second processor or with the x3650 M4 Thermal Solution Kit); two fan zones
with N+1 fan design; each fan has two motors.

Power supply Up to two redundant hot-swap 550 W AC or 750 W AC or 900 W AC power supplies (all 80

PLUS Platinum certification), or -48V 750 W DC power supply options.

Video Matrox G200eR2 with 16 MB memory integrated into the IMM2. Maximum resolution is

1600x1200 at 75 Hz with 16 M colors.

Hot-swap parts Hard drives, power supplies, and fans.

Systems
management

UEFI, IBM Integrated Management Module II (IMM2), Predictive Failure Analysis, Light Path
Diagnostics, Automatic Server Restart, IBM Systems Director and Active Energy Manager, IBM
ServerGuide. Optional IBM Integrated Management Module Advanced Upgrade software
feature for remote presence.

Security

Power-on password, administrator's password, Trusted Platform Module (TPM).

features

Operating
systems
supported

Microsoft Windows Server 2012 R2 (support is planned for earlier in 2014), 2012, 2008 R2 and
2008, Red Hat Enterprise Linux 5 and 6, SUSE Linux Enterprise Server 10 and 11, VMware
ESX 4.1 and VMware ESXi 4.1 embedded hypervisor (not supported with E5-2600 v2 models),
VMware vSphere 5 (ESXi) and vSphere 5.1 (ESXi).

Limited
warranty

Service and
support

Three-year customer-replaceable unit and on-site limited warranty with 9x5 next business day
(NBD).

Optional service upgrades are available through IBM ServicePacs®: Four-hour or two-hour
response time, eight-hour fix time, one-year or two-year warranty extension, remote technical
support for IBM hardware and some IBM and third-party applications.

Dimensions Height: 86 mm (3.4 in), width: 445 mm (17.5 in), depth: 746 mm (29.4 in)

Weight Minimum configuration: 25 kg (55 lb), maximum: 30 kg (65 lb)

IBM System x3650 M4 8

The x3650 M4 servers are shipped with the following items:



Statement of Limited Warranty



Important Notices



Rack Installation Instructions



Documentation CD that contains the



IBM Systems Director Flyer



IBM System x® Gen-III Slides Kit



IBM System x Gen-III Cable Management Arm (CMA)



2.8 m (9.18 in) C13-C14 power cord (one for models with one power supply, and two for models with

Installation and User's Guide

two power supplies)

IBM System x3650 M4 9

Standard models

The following table lists the standard models.

Table 2. Standard models (Part 1: Intel Xeon processor E5-2600 v2 product family)

MTM* Intel Xeon processors†

(two maximum)

Models announced September 2013

7915-23x 1x E5-2637 v2 4C 3.5GHz

15MB 1866MHz 130W

7915-33x 1x E5-2643 v2 6C 3.5GHz

25MB 1866MHz 130W

7915-43x 1x E5-2667 v2 8C 3.3GHz

25MB 1866MHz 130W

7915-53x 1x E5-2650L v2 10C 1.7GHz

25MB 1600MHz 70W

7915-73x 1x E5-2695 v2 12C 2.4GHz

30MB 1866MHz 115W

7915-83x 1x E5-2697 v2 12C 2.7GHz

30MB 1866MHz 130W

7915-A3x 1x E5-2603 v2 4C 1.8GHz

10MB 1333MHz 80W

7915-B3x 1x E5-2609 v2 4C 2.5GHz

10MB 1333MHz 80W

7915-C3x 1x E5-2620 v2 6C 2.1GHz

15MB 1600MHz 80W

7915-C5x 1x E5-2620 v2 6C 2.1GHz

15MB 1600MHz 80W

7915-D3x 1x E5-2630 v2 6C 2.6GHz

15MB 1600MHz 80W

7915-F3x 1x E5-2640 v2 8C 2.0GHz

20MB 1600MHz 95W

7915-G3x 1x E5-2650 v2 8C 2.6GHz

20MB 1866MHz 95W

7915-H3x 1x E5-2660 v2 10C 2.2GHz

25MB 1866MHz 95W

7915-J3x 1x E5-2670 v2 10C 2.5GHz

25MB 1866MHz 115W

7915-L3x 1x E5-2680 v2 10C 2.8GHz

25MB 1866MHz 115W

7915-M3x 1x E5-2690 v2 10C 3.0GHz

25MB 1866MHz 130W

Memory RAID Drive

1x 8GB
1866MHz

1x 8GB
1866MHz

1x 8GB
1866MHz

1x 8GB
1600MHz

1x 8GB
1866MHz

1x 8GB
1866MHz

1x 4GB
1600MHz§

1x 4GB
1600MHz§

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 8GB
1866MHz

1x 8GB
1866MHz

1x 8GB
1866MHz

1x 8GB
1866MHz

1x 8GB
1866MHz

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e
1GB Flash

M5110e
1GB Flash

M5110e
1GB Flash

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e 6x 3.5"

M5110e
512MB Flash

M5110e
512MB Flash

M5110e
1GB Flash

M5110e
1GB Flash

M5110e
1GB Flash

M5110e
1GB Flash

M5110e 8x 2.5"

bays
(std /
max)

HS / 16

HS / 16

HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

HS / 16

HS / 16

HS / 16

HS / 6

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

HS / 16

Drives GbE I/O

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

Open
bay

4 3 / 6 Optional 1x 900W

4 3 / 6 Optional 1x 900W

4 3 / 6 Optional 1x 900W

4 3 / 6 Optional 1x 550W

4 3 / 6 Optional 1x 900W

4 3 / 6 Optional 1x 900W

4 3 / 6 Optional 1x 550W

4 3 / 6 Optional 1x 550W

4 3 / 6 Optional 1x 550W

4 3 / 6 Optional 1x 550W

4 3 / 6 Optional 1x 550W

4 3 / 6 Optional 1x 550W

4 3 / 6 Optional 1x 750W

4 3 / 6 Optional 1x 750W

4 3 / 6 Optional 1x 750W

4 3 / 6 Optional 1x 900W

4 3 / 6 Optional 1x 900W

slots
(std /
max)

Optical Power

supply
(std /
max)

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

HS / 2

* x in the Machine Type Model (MTM) represents a country-specific letter (for example, the EMEA MTM is
7915-A3G, and the US MTM is 7915-A3U). Ask an IBM representative for specifics.
† Processor detail: Processor quantity and model, cores, core speed, L3 cache, memory speed, TDP.

§ For models A3x and B3x, the standard DIMM is rated at 1600 MHz, but operates at up to 1333 MHz to match the
processor memory speed. Actual memory speed maximums depend on several factors, as described in "Memory
options".

IBM System x3650 M4 10

Table 2. Standard models (Part 2: Intel Xeon processor E5-2600 product family)

Model Intel Xeon processors†

Models announced August 2012

7915-32x 1x E5-2643 4C 3.3GHz

7915-GSx
(SAP*)

7915-M2x 1x E5-2690 8C 2.9GHz

Models announced March 2012

7915-A2x 1x E5-2603 4C 1.8GHz

7915-B2x 1x E5-2609 4C 2.4GHz

7915-C2x 1x E5-2620 6C 2.0GHz

7915-C4x 1x E5-2620 6C 2.0GHz

7915-D2x 1x E5-2630 6C 2.3GHz

7915-F2x 1x E5-2640 6C 2.5GHz

(two maximum)

10MB 1600MHz 130W

1x E5-2650 8C 2.0GHz
20MB 1600MHz 95W

20MB 1600MHz 135W

10MB 1066MHz 80W

10MB 1066MHz 80W

15MB 1333MHz 95W

15MB 1333MHz 95W

15MB 1333MHz 95W

15MB 1333MHz 95W

Memory RAID Disk

1x 4 GB M5110e 8 / 16

4x 8 GB M5110e

1GB flash

1x 4 GB M5110e 8 / 16

1x 4 GB M5110e 8 / 16

1x 4 GB M5110e 8 / 16

1x 8 GB M5110e 8 / 16

1x 8 GB M5110e 6 / 6

1x 8 GB M5110e

512MB flash

1x 8 GB M5110e

512MB flash

bays

2.5" HS

8 / 16

2.5" HS

2.5" HS

2.5" HS

2.5" HS

2.5" HS

3.5" HS

8 / 16

2.5" HS

8 / 16

2.5" HS

Disks GbE Optical Power

Open 4 Open 1x 900W

1x 1TB NL SAS
7x 600GB SAS
VMware key*

Open 4 Open 1x 900W

Open 4 Open 1x 550W

Open 4 Open 1x 550W

Open 4 Open 1x 550W

Open 4 Open 1x 550W

Open 4 Open 1x 750W

Open 4 Open 1x 750W

4 Open 2x 750W

supply

7915-G2x 1x E5-2650 8C 2.0GHz

20MB 1600MHz 95W

7915-52x 1x E5-2650L 8C 1.8GHz

20MB 1600MHz 70W

7915-H2x 1x E5-2660 8C 2.2GHz

20MB 1600MHz 95W

7915-62x 1x E5-2665 8C 2.4GHz

20MB 1600MHz 115W

7915-J2x 1x E5-2670 8C 2.6GHz

20MB 1600MHz 115W

7915-L2x 1x E5-2680 8C 2.7GHz

20MB 1600MHz 130W

1x 8 GB M5110e

1GB flash

1x 8 GB M5110e

1GB flash

1x 8 GB M5110e

1GB flash

1x 8 GB M5110e

1GB flash

1x 8 GB M5110e

1GB flash

1x 8 GB M5110e

1GB flash

8 / 16

2.5" HS

8 / 16

2.5" HS

8 / 16

2.5" HS

8 / 16

2.5" HS

8 / 16

2.5" HS

8 / 16

2.5" HS

Open 4 Open 1x 750W

Open 4 Open 1x 550W

Open 4 Open 1x 750W

Open 4 Open 1x 750W

Open 4 Open 1x 750W

Open 4 Open 1x 900W

† Processor detail: Processor quantity and model, cores, core speed, L3 cache, memory speed, power consumption
* Model GSx includes preinstalled SAP Discovery System V5 -- see below. Also includes IBM Blank USB Memory
Key for VMWare ESXi Downloads, part number 41Y8298

Refer to the Specifications section for information about standard features of the server.

IBM System x3650 M4 11

Workload optimized model - SAP Discovery system

Model GSx comes preinstalled with SAP Discovery system V5. The SAP Discovery system is a fully
configured and preintegrated service-oriented architecture (SOA) platform enabler for SAP development
environments. The IBM Systems solution with SAP Discovery system provides a robust IBM System x
hardware platform for evaluating SAP software. The x3650 M4 model is pre-installed with a wide range of
SAP software and development tools, the solution offers a fast, easy and cost-effective way to explore,
evaluate and train on SAP products including SAP HANA, before deploying new software in your
infrastructure.

Learn more at http://ibm.com/systems/x/solutions/sap/discoverysystem

Note: The model that includes the preinstalled copy of SAP software does not include a license to use
such SAP software. Please contact your SAP representative to obtain the appropriate license rights to
use the SAP software.

IBM System x3650 M4 12

Express models

The following table lists the express models.

Table 3. Express models (Part 1: Intel Xeon processor E5-2600 v2 product family)

MTM* Intel Xeon processors†

(two maximum)

United States, Canada, Latin America

7915-EFU 1x E5-2609 v2 4C 2.5GHz

10MB 1333MHz 80W

7915-EGU 1x E5-2630 v2 6C 2.6GHz

15MB 1600MHz 80W

7915-EHU 1x E5-2640 v2 8C 2.0GHz

20MB 1600MHz 95W

7915-EJU 1x E5-2650 v2 8C 2.6GHz

20MB 1866MHz 95W

7915-EKU 1x E5-2670 v2 10C 2.5GHz

25MB 1866MHz 115W

Latin America (Brazil only)

7915-EPU 1x E5-2620 v2 6C 2.1GHz

15MB 1600MHz 80W

7915-EQU 1x E5-2640 v2 8C 2.0GHz

20MB 1600MHz 95W

Asia Pacific (China only)

7915-ELC 1x E5-2603 v2 4C 1.8GHz

10MB 1333MHz 80W

Memory RAID Drive

1x 8GB
1600MHz§

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 16GB
1866MHz

1x 16GB
1866MHz

1x 8GB
1600MHz

2x 8GB
1600MHz

1x 8GB
1866MHz§

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e 8x 2.5"

bays
(std /
max)

HS / 16

HS / 16

HS / 16

HS / 16

HS / 16

HS / 16

HS / 16

HS / 16

Drives GbE I/O

Open bay 4 3 / 6 Multi-

Open bay 4 3 / 6 Multi-

Open bay 4 3 / 6 Multi-

Open bay 4 3 / 6 Multi-

Open bay 4 3 / 6 Multi-

2x 300GB
10K

2x 300GB
10K

2x 300GB
10K

4 3 / 6 Multi-

4 3 / 6 Multi-

4 3 / 6 Optional 1x 550W

Optical Power
slots
(std /
max)

burner

burner

burner

burner

burner

burner

burner

supply
(std /
max)

1x 550W
HS / 2

1x 550W
HS / 2

1x 550W
HS / 2

1x 750W
HS / 2

2x 750W
HS / 2

2x 550W
HS / 2

2x 550W
HS / 2

HS / 2

7915-EOC 1x E5-2603 v2 4C 1.8GHz

10MB 1333MHz 80W

7915-ERC 1x E5-2609 v2 4C 2.5GHz

10MB 1333MHz 80W

7915-ESC 1x E5-2609 v2 4C 2.5GHz

10MB 1333MHz 80W

7915-ETC 1x E5-2620 v2 6C 2.1GHz

15MB 1600MHz 80W

7915-EUC 1x E5-2620 v2 6C 2.1GHz

15MB 1600MHz 80W

7915-EVC 1x E5-2640 v2 8C 2.0GHz

20MB 1600MHz 95W

7915-EWC 1x E5-2650 v2 8C 2.6GHz

20MB 1866MHz 95W

1x 8GB
1866MHz§

1x 8GB
1866MHz§

1x 8GB
1866MHz§

1x 8GB
1866MHz§

1x 8GB
1866MHz§

1x 8GB
1600MHz

1x 8GB
1600MHz§

M5110e 8x 2.5"

HS / 16

M5110e 8x 2.5"

HS / 16

M5110e 8x 2.5"

HS / 16

M5110e 8x 2.5"

HS / 16

M5110e 8x 2.5"

HS / 16

M5110e 8x 2.5"

HS / 16

M5110e 8x 2.5"

HS / 16

2x 300GB
15K

2x 300GB
10K

2x 300GB
15K

2x 300GB
10K

2x 300GB
15K

Open bay 4 3 / 6 Optional 2x 750W

Open bay 4 3 / 6 Optional 2x 750W

4 3 / 6 Optional 1x 550W

HS / 2

4 3 / 6 Optional 1x 550W

HS / 2

4 3 / 6 Optional 1x 550W

HS / 2

4 3 / 6 Optional 1x 550W

HS / 2

4 3 / 6 Optional 1x 550W

HS / 2

HS / 2

HS / 2

IBM System x3650 M4 13

Table 3. Express models (Part 1: Intel Xeon processor E5-2600 v2 product family) (continued)

MTM* Intel Xeon processors†

(two maximum)

Europe

7915-E6G 1x E5-2620 v2 6C 2.1GHz

15MB 1600MHz 80W

7915-E7G 1x E5-2620 v2 6C 2.1GHz

15MB 1600MHz 80W

7915-E8G 1x E5-2630 v2 6C 2.6GHz

15MB 1600MHz 80W

7915-E9G 1x E5-2640 v2 8C 2.0GHz

20MB 1600MHz 95W

Central and Eastern Europe (CEE) and Middle East and Africa (MEA)

7915-E6G 1x E5-2620 v2 6C 2.1GHz

15MB 1600MHz 80W

7915-E8G 1x E5-2630 v2 6C 2.6GHz

15MB 1600MHz 80W

7915-E9G 1x E5-2640 v2 8C 2.0GHz

20MB 1600MHz 95W

Russia/Commonwealth of Independent States (CIS)

7915-E7G 1x E5-2620 v2 6C 2.1GHz

15MB 1600MHz 80W

Memory RAID Drive

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 8GB
1600MHz

1x 8GB
1600MHz

M5110e 8x 2.5"

M5110e 8x 2.5"

M5110e
512MB (f)

M5110e
512MB (f)

M5110e 8x 2.5"

M5110e
512MB (f)

M5110e
512MB (f)

M5110e 8x 2.5"

bays
(std /
max)

HS / 16

HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

HS / 16

Drives GbE I/O

2x 300GB
10K

Open bay 4 3 / 6 Multi-

Open bay 4 3 / 6 Multi-

Open bay 4 3 / 6 Multi-

2x 300GB
10K

Open bay 4 3 / 6 Multi-

Open bay 4 3 / 6 Multi-

Open bay 4 3 / 6 Multi-

4 3 / 6 Multi-

4 3 / 6 Multi-

Optical Power
slots
(std /
max)

burner

burner

burner

burner

burner

burner

burner

burner

supply
(std /
max)

2x 550W
HS / 2

1x 550W
HS / 2

1x 550W
HS / 2

1x 750W
HS / 2

2x 550W
HS / 2

1x 550W
HS / 2

1x 750W
HS / 2

1x 550W
HS / 2

7915-E8G 1x E5-2630 v2 6C 2.6GHz

15MB 1600MHz 80W

1x 8GB
1600MHz

M5110e
512MB (f)

8x 2.5"
HS / 16

Open bay 4 3 / 6 Multi-

burner

1x 550W
HS / 2

* MTM = Machine Type Model
† Processor detail: Processor quantity and model, number of cores, core speed, L3 cache, memory speed, TDP.
(f) The ServeRAID M5110e RAID controller in this model includes flash-backed cache.

§ For model EFU, the standard DIMM is rated at 1600 MHz, but operates at up to 1333 MHz to match the processor
memory speed. For models ELC, EOC, ERC, and ESC, the standard DIMM is rated at 1866 MHz, but operates at up
to 1333 MHz to match the processor memory speed. For models ETC and EUC, the standard DIMM is rated at 1866
MHz, but operates at up to 1600 MHz to match the processor memory speed. Conversely, for model EWC, the
processor memory speed is rated at 1866 MHz, but operates at up to 1600 MHz to match the rated speed of the
installed DIMM. Actual memory speed maximums depend on several factors, as described in "Memory options".

IBM System x3650 M4 14

Table 3. Express models (Part 2: Intel Xeon processor E5-2600 product family)

Model Processor Memory RAID

North America (NA), Latin America (LA)

7915-EAU 1x Xeon E5-2609 4C 2.4GHz

10MB 1066MHz 80W

7915-EBU 1x Xeon E5-2620 6C 2.0GHz

15MB 1333MHz 95W

7915-ECU 1x Xeon E5-2630 6C 2.3GHz

15MB 1333MHz 95W

7915-EDU 1x Xeon E5-2640 6C 2.5GHz

15MB 1333MHz 95W

7915-EEU 1x Xeon E5-2650 8C 2.0GHz

20MB 1600MHz 95W

Europe

7915-E1G 1x Xeon E5-2603 4C 1.8GHz

10MB 1066MHz 80W

7915-E2G 1x Xeon E5-2620 6C 2.0GHz

15MB 1333MHz 95W

7915-E3G 1x Xeon E5-2620 6C 2.0GHz

15MB 1333MHz 95W

7915-E4G 1x Xeon E5-2630 6C 2.3GHz

15MB 1333MHz 95W

1x 4 GB M5110e

1 x 8 GB M5110e

1 x 8 GB M5110e

2 x 8 GB M5110e

1 x 8 GB M5110e

1x 4 GB M5110e 8x 2.5"

1x 8 GB M5110e 8x 2.5"

1x 8 GB M5110e 8x 2.5"

1x 8 GB M5110e

controller

512MB Flash

512MB Flash

512MB Flash

512MB Flash

1GB Flash

512MB Flash

Disk
bays

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

HS / 16

HS / 16

HS / 16

8x 2.5"
HS / 16

Disks GbE Slots Optical Power

Optional 4 3 / 6 Multi-

Optional 4 3 / 6 Multi-

Optional 4 3 / 6 Multi-

Optional 4 3 / 6 Multi-

Optional 4 3 / 6 Multi-

Optional 4 3 / 6 Multi-

2 x 300GB 2.5"
10k HS SAS

Optional 4 3 / 6 Multi-

2 x 300GB 2.5"
10k HS SAS

4 3 / 6 Multi-

4 3 / 6 Multi-

burner

burner

burner

burner

burner

burner

burner

burner

burner

1x 550 W

1x 550 W

1x 750 W

2x 750 W

1x 750 W

1x 550 W

2x 550 W

1x 550 W

1x 750 W

7915-E5G 2x Xeon E5-2650 8C 2.0GHz

20MB 1600MHz 95W

2x 8 GB M5110e

512MB Flash

8x 2.5"
HS / 16

3 x 300GB 2.5"
10k HS SAS

4 6 / 6 Multi-

burner

2x 750 W

IBM System x3650 M4 15

Table 3. Express models (Part 2: Intel Xeon processor E5-2600 product family) (continued)

Model Processor Memory RAID

Central and Eastern Europe (CEE) and Middle East & Africa (MEA)

7915-E1G 1x Xeon E5-2603 4C 1.8GHz

10MB 1066MHz 80W

7915-E2G 1x Xeon E5-2620 6C 2.0GHz

15MB 1333MHz 95W

7915-E3G 1x Xeon E5-2620 6C 2.0GHz

15MB 1333MHz 95W

7915-E4G 1x Xeon E5-2630 6C 2.3GHz

15MB 1333MHz 95W

7915-E5G 2x Xeon E5-2650 8C 2.0GHz

20MB 1600MHz 95W

7915-K1G 1x Xeon E5-2609 4C 2.4GHz

10MB 1066MHz 80W

7915-K4G 1x Xeon E5-2630 6C 2.3GHz

15MB 1333MHz 95W

7915-K5G 1x Xeon E5-2650 8C 2.0GHz

20MB 1600MHz 95W

Russia/Commonwealth of Independent States (CIS)

7915-K2G 1x Xeon E5-2603 4C 1.8GHz

10MB 1066MHz 80W

1x 4 GB M5110e 8x 2.5"

1x 8 GB M5110e 8x 2.5"

1x 8 GB M5110e 8x 2.5"

1x 8 GB M5110e

2x 8 GB M5110e

1x 4 GB M5110e 6x 3.5"

1x 8 GB M5110e

2x 8 GB M5110e

1x 4 GB M5110e

controller

512MB Flash

512MB Flash

512MB Flash

512MB Flash

512MB Battery

Disk
bays

HS / 16

HS / 16

HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

HS/ 6

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

Disks GbE Slots Optical Power

Optional 4 3 / 6 Multi-

2 x 300GB 2.5"
10k HS SAS

Optional 4 3 / 6 Multi-

2 x 300GB 2.5"
10k HS SAS

3 x 300GB 2.5"
10k HS SAS

Optional 4 3 / 6 Multi-

Optional 4 3 / 6 Multi-

Optional 4 3 / 6 Multi-

Optional 4 3 / 6 Multi-

4 3 / 6 Multi-

4 3 / 6 Multi-

4 6 / 6 Multi-

burner

burner

burner

burner

burner

burner

burner

burner

burner

1x 550 W

2x 550 W

1x 550 W

1x 750 W

2x 750 W

1x 550 W

2x 750 W

2x 750 W

1x 550 W

7915-K3G 1x Xeon E5-2620 6C 2.0GHz

15MB 1333MHz 95W

7915-K4G 1x Xeon E5-2630 6C 2.3GHz

15MB 1333MHz 95W

7915-K5G 1x Xeon E5-2650 8C 2.0GHz

20MB 1600MHz 95W

1x 8 GB M5110e

512MB Flash

1x 8 GB M5110e

512MB Flash

2x 8 GB M5110e

512MB Flash

8x 2.5"
HS / 16

8x 2.5"
HS / 16

8x 2.5"
HS / 16

Optional 4 3 / 6 Multi-

burner

Optional 4 3 / 6 Multi-

burner

Optional 4 3 / 6 Multi-

burner

1x 550 W

2x 750 W

2x 750 W

IBM System x3650 M4 16

Processor options

The x3650 M4 supports the processor options listed in the following table. The server supports up to two
processors. This table shows which server models have each processor standard. If there is no
corresponding
Second processor options include an additional cooling fan.

Table 4. Processor options (Part 1: Intel Xeon processor E5-2600 v2 product family)

Part
number

46W4360 A3VR / A3V7 Intel Xeon Processor E5-2603 v2 4C 1.8GHz 10MB Cache 1333MHz 80W A3x

46W4361 A3VS / A3V8 Intel Xeon Processor E5-2609 v2 4C 2.5GHz 10MB Cache 1333MHz 80W B3x

46W4363 A3VU / A3VA Intel Xeon Processor E5-2620 v2 6C 2.1GHz 15MB Cache 1600MHz 80W C3x

00Y7650 A4EQ / A4EN Intel Xeon Processor E5-2628L v2 8C 1.9GHz 20MB Cache 1600MHz 70W -

46W4364 A3VV / A3VB Intel Xeon Processor E5-2630 v2 6C 2.6GHz 15MB Cache 1600MHz 80W D3x

46W4376 A3W7 / A3VP Intel Xeon Processor E5-2630L v2 6C 2.4GHz 15MB Cache 1600MHz 60W -

46W4362 A3VT / A3V9 Intel Xeon Processor E5-2637 v2 4C 3.5GHz 15MB Cache 1866MHz 130W 23x

where-used

Feature
codes*

model for a particular processor, this processor is only available through CTO.

Standar
d
models
where

Description

used

46W4367 A3VY / A3VE Intel Xeon Processor E5-2640 v2 8C 2.0GHz 20MB Cache 1600MHz 95W F3x

46W4371 A3W2 / A3VJ Intel Xeon Processor E5-2643 v2 6C 3.5GHz 25MB Cache 1866MHz 130W 33x

00Y7652 A4ER / A4EP Intel Xeon Processor E5-2648L v2 10C 1.9GHz 25MB Cache 1866MHz

70W

46W4365 A3VW / A3VC Intel Xeon Processor E5-2650 v2 8C 2.6GHz 20MB Cache 1866MHz 95W G3x

46W4375 A3W6 / A3VN Intel Xeon Processor E5-2650L v2 10C 1.7GHz 25MB Cache 1600MHz

70W

46W4366 A3VX / A3VD Intel Xeon Processor E5-2660 v2 10C 2.2GHz 25MB Cache 1866MHz 95W H3x

46W4372 A3W3 / A3VK Intel Xeon Processor E5-2667 v2 8C 3.3GHz 25MB Cache 1866MHz 130W 43x

46W4369 A3W0 / A3VG Intel Xeon Processor E5-2670 v2 10C 2.5GHz 25MB Cache 1866MHz

115W

46W4370 A3W1 / A3VH Intel Xeon Processor E5-2680 v2 10C 2.8GHz 25MB Cache 1866MHz

115W

46W4377 A3W8 / A3VQ Intel Xeon Processor E5-2690 v2 10C 3.0GHz 25MB Cache 1866MHz

130W

46W4373 A3W4 / A3VL Intel Xeon Processor E5-2695 v2 12C 2.4GHz 30MB Cache 1866MHz

115W

46W4374 A3W5 / A3VM Intel Xeon Processor E5-2697 v2 12C 2.7GHz 30MB Cache 1866MHz

130W

-

53x

J3x

L3x

M3x

73x

83x

* The first feature code is for the first processor; the second feature code is for the second processor

IBM System x3650 M4 17

Table 4. Processor options (Part 2: Intel Xeon processor E5-2600 product family)

Part number Feature

codes*

69Y5323 A1KJ / A1KV Intel Xeon E5-2603 4C 1.8GHz 10MB 1066MHz 80W A2x

69Y5325 A1KL / A1KX Intel Xeon E5-2609 4C 2.4GHz 10MB 1066MHz 80W B2x

69Y5326 A1KM / A1KY Intel Xeon E5-2620 6C 2.0GHz 15MB 1333MHz 95W C2x, C4x

69Y5327 A1KN / A1KZ Intel Xeon E5-2630 6C 2.3GHz 15MB 1333MHz 95W D2x

94Y6603 A2AW / A2AZ Intel Xeon E5-2630L 6C 2.0GHz 15MB 1333MHz 60W -

94Y6686 A2VP / A2QM Intel Xeon E5-2637 2C 3.0GHz 5MB 1600MHz 80W -

69Y5328 A1KP / A1L0 Intel Xeon E5-2640 6C 2.5GHz 15MB 1333MHz 95W F2x

94Y6604 A2AX / A2B0 Intel Xeon E5-2643 4C 3.3GHz 10MB 1600MHz 130W 32x

00D9451 A396 / A398 Intel Xeon E5-2648L 8C 1.8GHz 20MB 1600MHz 70W -

69Y5329 A1KQ / A1L1 Intel Xeon E5-2650 8C 2.0GHz 20MB 1600MHz 95W G2x, GSx

69Y5336 A1KU / A1L5 Intel Xeon E5-2650L 8C 1.8GHz 20MB 1600MHz 70W 52x

00D9450 A395 / A397 Intel Xeon E5-2658 8C 2.1GHz 20MB 1600MHz 95W -

69Y5330 A1KR / A1L2 Intel Xeon E5-2660 8C 2.2GHz 20MB 1600MHz 95W H2x

94Y6687 A2GU / A2GV Intel Xeon E5-2665 8C 2.4GHz 20MB 1600MHz 115W 62x

Description Models

where used

69Y5333 A1KT / A1L4 Intel Xeon E5-2667 6C 2.9GHz 15MB 1600MHz 130W -

94Y6602 A2AV / A2AY Intel Xeon E5-2670 8C 2.6GHz 20MB 1600MHz 115W J2x

69Y5331 A1KS / A1L3 Intel Xeon E5-2680 8C 2.7GHz 20MB 1600MHz 130W L2x

94Y6685 A2VN / A2QL Intel Xeon E5-2690 8C 2.9GHz 20MB 1600MHz 135W M2x

* The first feature code is for the first processor; the second feature code is for the second processor

Memory options

IBM DDR3 memory is compatibility tested and tuned for optimal System x performance and throughput.
IBM memory specifications are integrated into the light path diagnostics for immediate system
performance feedback and optimum system uptime. From a service and support standpoint, IBM memory
automatically assumes the IBM system warranty, and IBM provides service and support worldwide.

The IBM System x3650 M4 supports DDR3 memory. The server supports up to 12 DIMMs when one
processor is installed and up to 24 DIMMs when two processors are installed. Each processor has four
memory channels, and there are three DIMMs per channel.

The following rules apply when selecting the memory configuration:



Server supports UDIMMs, RDIMMs, HyperCloud DIMMs (also known as HCDIMMs), and LRDIMMs.



Mixing different types of memory (UDIMMs, RDIMMs, HyperCloud DIMMs, and LRDIMMs) is not
supported.



Mixing 1.5 V and 1.35 V DIMMs is supported; in such a case, all DIMMs operate at 1.5 V.

IBM System x3650 M4 18



Maximum number of ranks per one channel is eight (with the exception of Load Reduced DIMMs and
HyperCloud DIMMs where more than eight ranks are supported, because one quad-rank LRDIMM or
HCDIMM provides the reduced electrical load on a memory bus).



The maximum quantity of DIMMs that can be installed in the server depends on the number of CPUs,
DIMM type, rank, and operating voltage, as shown in the "Max. qty supported" row in Table 5.



All DIMMs in the server operate at the same speed, which is determined as the lowest value of:



Memory speed that is supported by the specific CPU.



Lowest of maximum operating speeds for selected memory configuration that depends on rated
speed, operating voltage, and quantity of DIMMs per channel, as shown under "Maximum
operating speed" section in the table.

The following table (Parts 1, 2, 3, and 4) shows the characteristics of the supported DIMMs. Tables cells
highlighted with a gray background indicate when the combination of DIMM voltage and the number of
DIMMs per channel still allows the DIMMs to operate at a rated speed.

Table 5. Maximum memory speeds (Part 1: Intel Xeon processor E5-2600 v2 product family - RDIMMs)

DIMM
specification

Rank Single rank Dual rank

Part numbers 00D5024 (4 GB)

00D5036 (8 GB)

Rated speed 1600 MHz 1866 MHz 1600 MHz 1866 MHz

Rated voltage 1.35 V 1.5 V 1.35 V 1.5 V

Operating voltage 1.35 V 1.5 V 1.5 V 1.35 V 1.5 V 1.5 V

Max qty supported* 24 24 24 24 24 24

Max DIMM capacity 8 GB 8 GB 8 GB 16 GB 16 GB 16 GB

Max memory capacity 192 GB 192 GB 192 GB 384 GB 384 GB 384 GB

Max. memory at rated speed None 128 GB 64 GB None 256 GB 256 GB

Maximum operating speed

1 DIMM per channel 1333 MHz 1600 MHz 1866 MHz 1333 MHz 1600 MHz 1866 MHz

2 DIMMs per channel 1333 MHz 1600 MHz 1600 MHz 1333 MHz 1600 MHz 1866 MHz

3 DIMMs per channel 800 MHz 1066 MHz 1066 MHz 800 MHz 1066 MHz 1066 MHz

00D5020 (4 GB)
00D5032 (8 GB)

RDIMM

00D5044 (8 GB)

46W0672 (16 GB)

00D5048 (16 GB)

* The maximum quantity that is supported is shown for two processors installed.

IBM System x3650 M4 19