IBM System x3500 M4 User Manual

IBM System x3500 M4 10
Memory options
The IBM System x3500 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:
The server supports UDIMMs, RDIMMs, and LRDIMMs.
z
Mixing different types of memory (UDIMMs, RDIMMs, and LRDIMMs) is not supported.
z
Mixing 1.5 V and 1.35 V DIMMs in the same server is supported. In such a case all DIMMs operate at
z
1.5 V.
The maximum number of ranks per channel is eight (with the exception of Load Reduced DIMMs,
z
where more than eight ranks are supported because one quad-rank LRDIMM provides the same
electrical load on a memory bus as a single-rank RDIMM).
The maximum quantity of DIMMs that can be installed in a server depends on the number of CPUs,
z
DIMM type, rank, and operating voltage, as shown in the "Max. qty supported" row in Table 4.
All DIMMs in the server operate at the same speed, which is determined as the lowest value of:
z
Memory speed supported by specific CPU
z
Lowest maximum operating speed for the selected memory configuration that depends on rated
z
speed, operating voltage, and quantity of DIMMs per channel, as shown in the "Max. operating
speed" section in Table 4
Table 4. Maximum memory speeds
DIMM type
DIMM specification
UDIMM RDIMM LRDIMM
Rank Dual rank Single rank Dual rank Quad rank Quad rank
Rated speed 1333 MHz 1333 MHz 1333 MHz 1600 MHz 1066 MHz 1333 MHz
Rated voltage 1.35 V 1.35 V 1.35 V 1.5 V 1.35 V 1.35 V
Operating voltage 1.35 V 1.5 V 1.35 V 1.5 V 1.35 V 1.5 V 1.5 V 1.35 V 1.5 V 1.35 V 1.5 V
Max. qty
supported*
16 16 16 24 16 24 24 16 16 24 24
Max. DIMM
capacity
2 GB 2 GB 4 GB 4 GB 16 GB 16 GB 4 GB 16 GB 16 GB 32 GB 32 GB
Max. memory
capacity
32 GB 32 GB 64 GB 96 GB 256GB 384GB 96GB 256GB 256GB 768GB 768GB
Max. operating
speed
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1 DIMM per
channel
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1600
MHz
800
MHz
1066
MHz
1333
MHz
1333
MHz
2 DIMMs per
channel
1066
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1600
MHz
800
MHz
800
MHz
1066
MHz
1333
MHz
3 DIMMs per
channel
NS** NS** NS** 1066
MHz
NS** 1066
MHz
1066
MHz
NS** NS** 1066
MHz
1066
MHz
* The maximum quantity supported is shown for two processors installed. When one processor installed the maximum
quantity supported is a half of that shown.
** NS = Not supported.

IBM System x3500 M4 Specifications

General

Form Factor	5U Tower
Operating System Support	Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware vSphere
Processor	Intel Xeon E5-2600 series
Memory	Up to 768GB DDR3
Storage	Up to 32 x 2.5" or 8 x 3.5" hot-swap SAS/SATA drives
RAID Support	RAID 0, 1, 5, 10
Network Interface	Four integrated Gigabit Ethernet ports
Power Supply	Redundant 750W
Expansion Slots	Up to 8 PCIe slots