Specifications

5102ch01.fm Draft Document for Review May 12, 2014 12:46 pm
2 IBM Power System S822 Technical Overview and Introduction
The Power S822 server supports a maximum of 16 DDR3 CDIMM slots. Memory features
supported are 16 GB, 32 GB, and 64 GB and run at 1600 MHz, allowing for a maximum
system memory of 1024 GB.
The high data transfer rates that are offered by the PCIe Gen3 slots can allow higher I/O
performance or consolidation of the I/O demands on to fewer adapters running at higher
rates. The result is better system performance at a lower cost when I/O demands are high.
The Power S822 offers three storage backplane options, providing a great deal of flexibility
and capability. The high performance SAS controller provides RAID-0, RAID-5, RAID-6 and
RAID-10 support for either HDD or SSD. One of the following three options are available for
choice:
򐂰 Storage backplane with SFF-3 bays and a DVD bay
򐂰 Split backplane functionality: This feature modifies the base storage backplane cabling
and adds a second, high performance SAS controller. The existing twelve SFF-3 SAS
bays are cabled to be split into two sets of six bays, each with one SAS controller. Both
SAS controllers are located integrated slots and do not use a PCIe slot.
򐂰 Storage Backplane with eight SFF-3 bays, 1.8-inch SSD cage, a DVD bay, and a dual IOA
with Write Cache and IBM Easy Tier® functionality:
The IBM Easy Tier function is provided with the dual I/O adapter (IOA), This function is
implemented just within the integrated Power Systems SAS controllers, the integrated
SAS bays, and, optionally, in an EXP24S I/O drawer. Hot data is automatically moved to
SSD, and cold data is automatically moved to HDD in an AIX, Linux, or VIOS environment.
The Active Memory™ Expansion feature enables memory expansion on the system. Using
compression/decompression of memory, content can effectively expand the maximum
memory capacity, providing additional server workload capacity and performance.
IBM EnergyScale technology provides features, such as power trending, power-saving,
capping of power, and thermal measurement.
Figure 1-1 shows the Power S822 server.
Figure 1-1 Front view of the Power S822
1.2 Operating environment
Table 1-1 on page 3 lists the operating environment specifications for the Power S822 server.