Designed in a compact, versatile 1U two-socket rack server, the IBM® System x3550 M5 rack server
fuels almost any workload from infrastructure to high-performance computing (HPC) to cloud or big data
with leadership security, efficiency, and reliability. Integrated with up to two Intel Xeon processors of the
E5-2600 v3 product family with faster, energy-efficient TruDDR4 Memory, the x3550 M5 delivers
exceptional performance. Storage can include up to 12 drives in an impressive selection of sizes and
types. This IBM Redbooks® Product Guide describes the System x3550 M5.
Suggested use
management, enterprise applications, collaboration/email, streaming media, web, and HPC.
The following figure shows the System x3550 M5.
Figure 1. The System x3550 M5
: Database, virtualization and cloud computing, infrastructure security, systems
Did you know?
The x3550 M5 incorporates energy smart features for minimized costs and efficient performance. Dual fan
zones support operation in up to 40°C environments. 80 PLUS Titanium power supply units (PSUs) can
deliver 96% efficiency at 50% load.
The x3550 M5 has outstanding memory performance that is achieved by supporting
two-RDIMM-per-channel configurations at speeds up to 12% faster than the Intel specification, while still
maintaining world-class IBM reliability.
System x® servers achieved the highest reliability of any x86 servers (ITIC 2014-2015 Global Server
Hardware, Server OS Reliability Survey:
The x3550 M5 integrates leadership security and reliability. System x Trusted Platform Assurance, an
exclusive set of System x features and practices, establishes a foolproof security foundation for your
workloads. Enterprise-class data protection is provided with optional self-encrypting drives and simple,
centralized key management through IBM Security Key Lifecycle Management. Diagnostic tools facilitate
reduced downtime and costs.
IBM System x3550 M51
Key features
The System x3550 M5 is a cost- and density-balanced 1U, 2-socket business-critical server, offering
improved performance and pay-as-you grow flexibility along with new features that improve server
management capability. New, innovative, energy-smart design with powerful high-performance
processors, a large capacity of high-performing DDR4 memory, and an improved feature set are ideal for
business-critical applications and cloud deployments.
Combining balanced performance and flexibility, the x3550 M5 is a great choice for small and medium
businesses and 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 reliability, availability, and serviceability (RAS)
and high-efficiency design improve your business environment and help save operational costs.
Scalability and performance
The x3550 M5 offers numerous features to boost performance, improve scalability, and reduce costs:
Improves productivity by offering superior system performance with up to 18-core processors, up to
45 MB of L3 cache, and up to 9.6 GT/s QPI interconnect links.
Supports up to two processors, 36 cores, and 72 threads to maximize the concurrent execution of
multithreaded applications.
Intelligent and adaptive system performance with energy efficient Intel Turbo Boost Technology
allows CPU cores to run at maximum speeds during peak workloads by temporarily going beyond
processor TDP.
Intel Hyper-Threading Technology boosts performance for multithreaded applications by enabling
simultaneous multithreading 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 2.0 (AVX 2.0) enable acceleration of enterprise-class workloads,
such as databases, enterprise resource planning, and others.
Up to 2133 MHz memory speeds with two DIMMs per channel running at 2133 MHz to help maximize
system performance.
Up to 1.5 TB of memory capacity with 64 GB Load Reduced DIMMS (LRDIMMs) (support for 64 GB
LRDIMMs is planned for a later date).
12 Gbps serial-attached SCSI (SAS) internal storage connectivity doubles the data transfer rate
compared to 6 Gb SAS solutions to maximize performance of storage I/O-intensive applications.
Flexible and scalable internal storage configurations for up to 24 TB of storage capacity in a dense 1U
rack form factor.
The use of solid-state drives (SSDs) instead of or along with traditional spinning hard disk 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.
The server has four integrated Gigabit Ethernet ports and optional 10 Gb Ethernet ports with
mezzanine LOM (ML2) adapters.
The server offers up to four PCI Express (PCIe) 3.0 I/O expansion slots in a dense 1U rack form
factor.
With Intel Integrated I/O Technology, the PCI Express 3.0 controller is integrated into the Intel Xeon
processor E5 family. This helps to dramatically reduce I/O latency and increase overall system
performance.
IBM System x3550 M52
Availability and serviceability
The x3550 M5 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
processors, memory DIMMs, and adapter cards.
The server offers hot-swap drives supporting RAID redundancy for data protection and greater
system uptime.
The server offers redundant hot-swap power supplies and hot-swap redundant fans to provide
availability for business-critical applications.
The new next-gen light path diagnostics LCD display panel simplifies servicing, speeds up problem
resolution, and helps improve system availability.
Predictive Failure Analysis (PFA) detects when system components (processors, VRMs, memory,
disks, fans, and power supplies) operate outside standard thresholds and generates proactive alerts
in advance of possible failure, therefore increasing uptime.
SSDs offer significantly better reliability than traditional mechanical HDDs for greater uptime.
Built-in Integrated Management Module II (IMM2) continuously monitors system parameters, triggers
alerts, and performs recovery actions in case of failure, 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 onsite limited warranty, next business day 9x5. Optional
service upgrades available.
Manageability and security
Powerful systems management features simplify local and remote management of the x3550 M5 and
deliver enterprise-class data protection:
The server includes an Integrated Management Module II (IMM2) to monitor server availability and
perform remote management.
An integrated industry-standard Unified Extensible Firmware Interface (UEFI) enables improved
setup, configuration, and updates, and simplifies error handling.
IBM Systems Director offers comprehensive systems management tools to help increase uptime,
reduce costs, and improve productivity through advanced server management capabilities.
Two integrated Trusted Platform Modules (TPMs) support the enablement of advanced cryptographic
functionality, such as digital signatures and remote attestation.
System x Trusted Platform Assurance, an exclusive set of System x security features and practices,
establishes a foolproof security foundation for workloads by delivering firmware that is securely built,
tested, digitally signed, and verified prior to execution.
The server offers enterprise-class data protection with optional self-encrypting drives and simple,
centralized key management through IBM Security Key Lifecycle Management.
There is industry-standard AES NI support for faster, stronger encryption.
Intel Execute Disable Bit functionality can help prevent certain classes of malicious buffer overflow
attacks when combined with a supporting operating system.
IBM System x3550 M53
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 x3550 M5 offers the following energy-efficiency features to save energy, reduce operational costs,
increase energy availability, and contribute to a green environment:
Energy-efficient planar components help lower operational costs.
High-efficiency power supplies with 80 PLUS Platinum and Titanium certifications.
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 1.2 V DDR4 memory DIMMs consume up to 20% less energy compared to 1.35 V DDR3
DIMMs.
The server uses hexagonal ventilation holes, 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™ and Intel Node Manager provide advanced data
center power notification and management to help achieve lower heat output and reduced cooling
needs.
Locations of key components and connectors
The following figure shows the front of the server.
Figure 2. Front view of the System x3550 M5
IBM System x3550 M54
The following figure shows the rear of the x3550 M5 server with three PCIe low profile slots.
Figure 3. Rear view of the System x3550 M5
The following figure shows the locations of key components inside the server.
Figure 4. Inside view of the System x3550 M5
IBM System x3550 M55
Standard specifications
The following table lists the standard specifications.
Table 1. Standard specifications (part 1)
ComponentsSpecification
Form factor1U Rack.
ProcessorUp to two Intel Xeon processor E5-2600 v3 product family CPUs with 18 cores (2.3 GHz core
speeds) or up to 12 cores (up to 2.6 GHz core speeds). Two QPI links up to 9.6 GT/s each. Up
to 2133 MHz memory speed. Up to 45 MB L3 cache.
ChipsetIntel C612.
MemoryUp to 24 DIMM sockets (12 DIMMs per processor). RDIMMs and LRDIMMs (Load Reduced
DIMMs) are supported.. Memory types cannot be intermixed. Memory speed up to 2133 MHz.
Memory
maximums
With RDIMMs: Up to 384 GB with 24x 16 GB RDIMMs and two processors
With LRDIMMs: Up to 1.5 TB with 24x 64 GB LRDIMMs and two processors (support for
64 GB LRDIMMs is planned for a later date)
Disk drive baysUp to 12x 2.5" hot-swap SAS/SATA HDDs, or up to 8x 2.5" Simple Swap SATA HDDs, or up to
4x 3.5" hot-swap SAS/SATA HDDs, or up to 4x 3.5" Simple Swap SATA HDDs.
Maximum internal
storage
Up to 14.4 TB with 1.2 TB 2.5" SAS HDDs, or up to 12 TB with 1 TB 2.5" NL SAS/SATA HDDs,
or up to 11.2 TB with 960 GB 2.5" SATA SSDs, or up to 24 TB with 6 TB 3.5" NL SAS/SATA
HDDs. Intermix of SAS/SATA is supported.
Storage controllerOnboard 6 Gb SATA: no RAID support
12 Gb SAS/SATA RAID: RAID 0, 1, 10 with M1215 or M5210. Optional upgrade to RAID 5,
50 is available for M1215. Optional upgrade to RAID 5, 50 is available for M5210
(zero-cache; 1 GB non-backed cache; 1 GB, 2 GB, or 4 GB flash-backed cache). Optional
upgrade to RAID 6, 60 is available for M5210 with memory cache upgrades. Optional SSD
Caching and Performance Accelerator feature upgrades are available.
12 Gb SAS/SATA non-RAID: N2215 HBA
Optical drive baysOne, optional, for models with 4 or 8 drive bays (models with 10 drive bays do not support an
internal optical drive). Support for DVD-ROM or Multiburner.
LOM (ML2) slot for dual-port 10 GbE cards with SFP+ or RJ-45 connectors or quad-port GbE
cards with RJ-45 connectors.
PCI Expansion
slots
Up to four slots, depending on the riser cards installed. The slots are as follows:
Slot 1: PCIe 3.0 x16 or ML2; low profile, half-length (not present if the HDD Rear Kit is
installed)
Slot 2: PCIe 3.0 x16 or PCIe 3.0 x8; low profile or full-height, half-length (PCIe 3.0 x16 slot
requires the second processor to be installed) (not present if the HDD Rear Kit is installed)
Slot 4: PCIe 3.0 x8 (dedicated for an internal RAID controller)
IBM System x3550 M56
Table 1. Standard specifications (part 2)
ComponentsSpecification
PortsFront: 1x USB 3.0, 1x USB 2.0 (8x 2.5" drive bay models) or 2x USB 2.0 (4x 3.5" and 10x
CoolingIBM Calibrated Vectored Cooling with up to eight redundant hot-swap fans (six standard,
Power supplyUp to two redundant hot-swap 550 W, 750 W, or 900 W High Efficiency Platinum AC power
Hot-swap partsHard drives, power supplies, and fans.
Systems
management
Security featuresPower-on password, administrator's password, two Trusted Platform Modules (TPMs): on the
VideoMatrox G200eR2 with 16 MB memory integrated into the IMM2. Maximum resolution is
Operating
systems
supported
2.5" drive bay models), and 1x DB-15 video.
Rear: 2x USB 3.0, 1x USB 2.0, 1x DB-15 video, 1x RJ-45 systems management, 4x RJ-45
GbE network ports. Optional 1x DB-9 serial port.
Internal: 1x USB port (for embedded hypervisor).
additional two with the second processor or with the x3550 M5 Thermal Solution Kit); dual fan
zones with N+1 fan redundancy; each fan has two motors.
supplies, or 750 W High Efficiency Titanium AC power supplies.
Unified Extensible Firmware Interface (UEFI), IBM Integrated Management Module II (IMM2.1)
based on Renesas SH7758, Predictive Failure Analysis, light path diagnostics, Automatic
Server Restart, IBM ToolsCenter, IBM Systems Director and Active Energy Manager, and Intel
Node Manager. Optional IBM Advanced Management Module Advanced Upgrade for remote
presence (graphics, keyboard and mouse, virtual media).
IMM2 (TPM 1.2) and on the host (TPM 1.2/2.0). Optional lockable front bezel.
1600x1200 at 75 Hz with 16 M colors.
Microsoft Windows Server 2012 R2, 2012, and 2008 R2, Red Hat Enterprise Linux 6 and 7,
SUSE Linux Enterprise Server 11, VMware vSphere (ESXi) 5.1 and 5.5.
Limited warranty Three-year customer-replaceable unit and onsite limited warranty with 9x5/Next Business Day
(NBD).
Service and
support
DimensionsHeight: 43 mm (1.7 in), width: 429 mm (16.9 in), depth: 734 mm (28.9 in)
WeightMinimum configuration: 13.8 kg (30.5 lb), maximum: 19.3 kg (42.7 lb)
Optional service upgrades are available through IBM ServicePac®: 4-hour or 2-hour response
time, 8 hours fix time, one-year or two-year warranty extension, remote technical support for
IBM hardware and selected IBM and third-party (Microsoft, Linux, VMware) software.
The x3550 M5 servers are shipped with the following items:
Statement of Limited Warranty
Important Notices
Rack Installation Instructions
Documentation CD containing
IBM System x3550 M5 Slide Kit G4
2.8 m C13-C14 power cord (one for models with one power supply and two for models with two power
Installation and User's Guide
supplies)
Note: Cable Management Arm (CMA) is not included. See the "Rack options" section for ordering
information.
IBM System x3550 M57
Standard models
The following table lists the standard models of the x3550 M5.
Table 2. Standard models
MTM*Intel Xeon processor†
(2 maximum)
Models announced September 2014
5463-A2x 1x E5-2603 v3 6C 1.6GHz
15MB 1600MHz 85W
5463-B2x 1x E5-2609 v3 6C 1.9GHz
15MB 1600MHz 85W
5463-C2x 1x E5-2620 v3 6C 2.4GHz
15MB 1866MHz 85W
5463-C4x 1x E5-2620 v3 6C 2.4GHz
15MB 1866MHz 85W
5463-D2x 1x E5-2630 v3 8C 2.4GHz
20MB 1866MHz 85W
5463-H2x 1x E5-2630L v3 8C 1.8GHz
20MB 1866MHz 55W
5463-F2x 1x E5-2640 v3 8C 2.6GHz
20MB 1866MHz 90W
5463-G2x 1x E5-2650 v3 10C 2.3GHz
25MB 2133MHz 105W
5463-62x1x E5-2670 v3 12C 2.3GHz
30MB 2133MHz 120W
Memory
(RDIMMs)
1x 8GB
2133MHz§
1x 8GB
2133MHz§
1x 16GB
2133MHz§
1x 16GB
2133MHz§
1x 16GB
2133MHz§
1x 16GB
2133MHz§
1x 16GB
2133MHz§
1x 16GB
2133MHz
1x 16GB
2133MHz
RAIDDrive
M1215 4x 2.5"
M1215 4x 3.5"
M1215 4x 2.5"
M1215 4x 3.5"
M5210
1GB Flash
M5210
1GB Flash
M5210
1GB Flash
M5210
1GB Flash
M5210
2GB Flash
bays
SS / 8
SS / 4
HS / 8
HS / 4
4x 2.5"
HS / 8
4x 2.5"
HS / 8
4x 2.5"
HS / 8
10x 2.5"
HS / 12
4x 2.5"
HS / 8
DrivesOnboard
Open
bay
Open
bay
Open
bay
Open
bay
Open
bay
Open
bay
Open
bay
Open
bay
Open
bay
NIC
4x GbE2 / 4Optional 1x 550 W
4x GbE2 / 4Optional 1x 550 W
4x GbE2 / 4Optional 1x 550 W
4x GbE2 / 4Optional 1x 550 W
4x GbE2 / 4Optional 1x 550 W
4x GbE2 / 4Optional 1x 550 W
4x GbE2 / 4Optional 1x 550 W
4x GbE2 / 4None1x 550 W
4x GbE2 / 4Optional 1x 750 W
I/O
slots
(std /
max)
Optical
drive
Power
supply
(std /
max)
HS / 2
HS / 2
HS / 2
HS / 2
HS / 2
HS / 2
HS / 2
HS / 2
HS / 2
5463-J2x1x E5-2680 v3 12C 2.5GHz
30MB 2133MHz 120W
5463-L2x1x E5-2690 v3 12C 2.6GHz
30MB 2133MHz 135W
5463-M2x 1x E5-2699 v3 18C 2.3GHz
45MB 2133MHz 145W
1x 16GB
2133MHz
1x 16GB
2133MHz
1x 16GB
2133MHz
M5210
2GB Flash
M5210 4x 2.5"
M5210 4x 2.5"
4x 2.5"
HS / 8
HS / 8
HS / 8
Open
bay
Open
bay
Open
bay
4x GbE2 / 4Optional 1x 750 W
HS / 2
4x GbE2 / 4Optional 1x 750 W
HS / 2
4x GbE2 / 4Optional 1x 900 W
HS / 2
* x in the Machine Type Model (MTM) represents a country-specific letter (for example, the EMEA MTM is 5463-A2G,
and the US MTM is 5463-A2U). Ask an IBM representative for specifics.
† Processor detail: Processor quantity and model, cores, core speed, L3 cache, memory speed, and thermal design
power (TDP).
§ For these models, the standard DIMM is rated at 2133 MHz, but operates at a lower speed to match the processor
memory speed. Actual memory speed maximums depend on several factors, as described in "Memory options".
Refer to the Specifications section for information about standard features of the server.
IBM System x3550 M58
Express models
The following table lists the express models of the x3550 M5.
Table 3. Express models (Part 1: United States, Canada, Latin America)
§ For these models, the standard DIMM is rated at 2133 MHz, but operates at a lower speed to match the processor
memory speed. Actual memory speed maximums depend on several factors, as described in "Memory options".
IBM System x3550 M59
Table 3. Express models (Part 2: Asia Pacific, Japan, Europe, Middle East and Africa)
§ For these models, the standard DIMM is rated at 2133 MHz, but operates at a lower speed to match the processor
memory speed. Actual memory speed maximums depend on several factors, as described in "Memory options".
Refer to the Specifications section for information about standard features of the server.
IBM System x3550 M510
Processor options
The x3550 M5 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
Configure-to-order (CTO). The processor part numbers include a CPU, a heatsink, and two system fans.
* The first feature code is for the first processor; the second feature code is for the second processor.
IBM System x3550 M511
Memory options
The IBM System x3550 M5 supports IBM TruDDR4 Memory. IBM TruDDR Memory uses the
highest-quality components sourced from Tier 1 DRAM suppliers and only memory that meets our strict
requirements is selected. It is compatibility tested and tuned on every IBM System x server to maximize
performance and reliability. IBM TruDDR4 Memory will have a unique signature programmed into the
DIMM, which will enable IBM System x servers to verify whether the memory installed is
qualified/supported by IBM. Because the IBM TruDDR4 Memory is authenticated, certain extended
memory performance features can be enabled to extend performance over industry standards. From a
service and support standpoint, IBM memory automatically assumes the IBM system warranty, and IBM
provides service and support worldwide.
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:
The server supports RDIMMs and LRDIMMs.
Mixing different types of memory (RDIMMs and LRDIMMs) is not supported.
The maximum quantity of DIMMs that can be installed in the server depends on the number of
processors.
All DIMMs in the server operate at the same speed, which is determined as the lowest value of the
following speeds:
Memory speed that is supported by the specific processor.
Lowest of maximum operating speeds for selected memory configuration that depends on
quantity of DIMMs per channel, as shown under "Maximum operating speed" in Table 5.
The following memory protection technologies are supported:
ECC
Chipkill (for x4-based memory DIMMs)
Memory mirroring
Memory rank sparing
Chipkill works only in independent channel mode (the default is operational mode) and supports only
x4-based memory DIMMs.
If memory mirroring is used, DIMMs must be installed in pairs (a minimum of one pair per each
processor), and both DIMMs in a pair must be identical in type and size.
If memory rank sparing is used, a minimum of one quad-rank LRDIMM or two single-rank or dual-rank
RDIMMs must be installed per populated channel (the DIMMs do not need to be identical). In rank sparing
mode, one rank of a DIMM in each populated channel is reserved as spare memory. The size of a rank
varies depending on the DIMMs installed.
Chipkill, memory mirroring, and memory rank sparing modes are mutually exclusive. Only one operational
memory mode can be enabled on a server, and it is a system-wide setting.
IBM System x3550 M512
The following table shows the characteristics of the supported DIMMs. Table cells highlighted with a gray
background indicate when the number of DIMMs per channel still allows the DIMMs to operate at a rated
speed.
Table 5. Maximum memory speeds
DIMM specificationRDIMMLRDIMM
RankSingle rankDual rankQuad rank
Part numbers46W0784 (4 GB)
46W0788 (8 GB)
Rated speed2133 MHz2133 MHz2133 MHz2133 MHz
Rated voltage1.2 V1.2 V1.2 V1.2 V
Maximum quantity supported**24242424
Maximum DIMM capacity8 GB8 GB16 GB64 GB
Maximum memory capacity192 GB192 GB384 GB1.5 TB
Maximum memory at rated
speed
Maximum operating speed
1 DIMM per channel2133 MHz2133 MHz2133 MHz2133 MHz
2 DIMMs per channel2133 MHz2133 MHz2133 MHz2133 MHz
3 DIMMs per channel1600 MHz1600 MHz1866 MHz1866 MHz
* Support for 64 GB LRDIMMs is planned for a later date.
** The maximum quantity that is supported is shown for two processors installed.
128 GB128 GB256 GB512 GB
46W0792 (8 GB)46W0796 (16 GB)46W0800 (32 GB)
95Y4812 (64 GB)*
IBM System x3550 M513
The following table lists memory options available for the x3550 M5 server.
Table 6. Memory options
Part
number
RDIMMs - 2133 MHz
46W0784A5B64GB TruDDR4 Memory (1Rx8, 1.2V)
46W0788A5B58GB TruDDR4 Memory (1Rx4, 1.2V)
46W0792A5B88GB TruDDR4 Memory (2Rx8, 1.2V)
46W0796A5B716GB TruDDR4 Memory (2Rx4, 1.2V)
LRDIMMs - 2133 MHz
46W0800A5B932GB TruDDR4 Memory (4Rx4, 1.2V)
95Y4812A5UK64GB TruDDR4 Memory (4Rx4,1.2V)
* Support for 64 GB LRDIMMs is planned for a later date.
Feature
code
DescriptionMaximum
PC4-17000 CL15 2133MHz LP RDIMM
PC4-17000 CL15 2133MHz LP RDIMM
PC4-17000 CL15 2133MHz LP RDIMM
PC4-17000 CL15 2133MHz LP RDIMM
PC417000 CL15 2133MHz LP LRDIMM
PC4-17000 CL15 2133MHz LP LRDIMM
supported
24 (12 per
CPU)
24 (12 per
CPU)
24 (12 per
CPU)
24 (12 per
CPU)
24 (12 per
CPU)
24 (12 per
CPU)
Standard models where
used
-
-
A2x, B2x
62x, C2x, C4x, D2x, F2x,
G2x, H2x, J2x, L2x, M2x
-
-
IBM System x3550 M514
Internal storage
The System x3550 M5 server supports the following internal drive bay configurations:
1.
4x 2.5-inch SAS/SATA hot-swap drive bay server models that can be upgraded to 8x 2.5-inch
SAS/SATA hot-swap drive bays
2.
10x 2.5-inch SAS/SATA hot-swap drive bay server models that can be upgraded to 12x 2.5-inch
SAS/SATA hot-swap drive bays (10x front drive bays and 2x rear drive bays)
3.
4x 2.5-inch SATA Simple Swap drive bay server models that can be upgraded to 8x 2.5-inch SATA
Simple Swap drive bays
4.
4x 3.5-inch SAS/SATA hot-swap drive bay server models
5.
4x 3.5-inch SATA Simple Swap drive bay server models
The following figure shows some of these configurations.
Figure 5. Internal drive configurations
Optical drive support: Four- and eight-drive bay models of the x3550 M5 support an optional internal
optical drive.
IBM System x3550 M515
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