Lenovo System x3750 M4, Installation And Service Manual

Page: 26 / 982

– Web browser
For additional information, see “Using the integrated management module
II” on page 144 and the
Integrated Management Module II User's Guide at
http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5086346.
• Integrated Trusted Platform Module
This integrated security chip performs cryptographic functions and stores private and public secure
keys. It provides the hardware support for the Trusted Computing Group (TCG) specification. You
can download the software to support the TCG specification, when the software is available. See
http://www.ibm.com/servers/eserver/xseries/scalable_family.html for details about the Trusted Platform
Module (TPM) implementation. You can enable TPM support through the Setup utility under the
System
Security menu choice (see “Using the Setup utility” on page 134).
• Large data-storage capacity and hot-swap capability
The server can support a maximum of 16 2.5-inch drives, 32 1.8-inch drives, or a combination of both
2.5-inch and 1.8-inch drives when you use the supported SAS/SATA backplane configurations and/or
required RAID Option Adapter additions. The server supports 2.5-inch hot-swap Serial Attached SCSI
(SAS) hard disk drives or hot-swap Serial ATA (SATA) hard disk drives, 2.5-inch hot-swap solid state
drives, or 1.8-inch hot-swap solid state drives.
With the hot-swap feature, you can add, remove, or replace hard disk drives without turning off the server.
• Large system-memory capacity
The server can support up to 1.5 TB of system memory. The server base system board provides 24
dual inline memory module (DIMM) connectors for up to 768 GB of memory. For additional memory
capacity, an optional microprocessor and memory expansion tray is available for purchase that provides
24 DIMMs for up to 768 GB of additional memory (depending on the DIMM size) and two additional
microprocessor sockets.
The server memory controller supports error correcting code (ECC) for up to 48 industry-standard
PC3L-12800R 1600 MHz, PC3-14900R 1866 MHz, PC3L-12800L 1600 MHz (Load Reduced), or
PC3-14900L 1866 MHz (Load Reduced) single-rank, dual-rank, or quad-rank, third-generation
double-data-rate (DDR3), registered, synchronous dynamic random access memory (SDRAM) DIMMs.
• Light path diagnostics
Light path diagnostics provides LEDs to help you diagnose problems. For more information about light
path diagnostics and the LEDs, see “Light path diagnostics” on page 20 and “Light path diagnostics
LEDs” on page 166.
• Memory mirroring Memory mirroring provides a redundant copy of all code and data that are addressable
in the configured memory map. Through the microprocessor memory controller chip set, memory
mirroring replicates and stores data across DIMMs on two or four memory channels simultaneously. If a
failure occurs, the memory controller switches from the DIMMs on the primary channel to the DIMMs on
the backup channel. To enable memory mirroring through the Setup utility, select
System Settings >
Memory > Memory Mode > Mirroring . For information about installing DIMMs for memory mirroring, see
“Memory mirroring” on page 49 and “Installing a memory module” on page 45 for more information.
• Memory sparing
The server supports memory sparing. Memory sparing reserves memory capacity for failover in the
event of a DIMM failure, and the reserved capacity is subtracted from the total available memory.
Memory sparing provides less redundancy than memory mirroring does. If a predetermined threshold
of correctable errors is reached, the contents of the failing DIMM are copied to the spare memory, and
the failing DIMM or rank is disabled. To enable memory sparing through the Setup utility, select
System
Settings > Memory > Memory Mode > Sparing . For information about installing DIMMs for memory
sparing, see “Memory sparing” on page 50.
• Multi-core processors
12
Lenovo System x3750 M4 Installation and Service Guide