Specifications

5102ch02.fm Draft Document for Review May 12, 2014 12:46 pm
60 IBM Power System S822 Technical Overview and Introduction
The DVD drive and media device do not have an independent SAS adapter and so cannot be
assigned to an LPAR independently of the HDD/SSDs in the system.
2.7 External I/O subsystems
At the time of writing there are no PCIe I/O drawers such as the feature 5802, or 5877
supported on the Power S822.
2.8 External disk subsystems
This section describes the following external disk subsystems that can be attached to the
Power 822 server:
򐂰 EXP24S SFF Gen2-bay drawer for high-density storage (#5887)
򐂰 IBM System Storage
2.8.1 EXP24S SFF Gen2-bay drawer
The EXP24S SFF Gen2-bay drawer (#5887) is an expansion drawer that supports up to
24 hot-swap 2.5-inch SFF SAS HDDs on POWER6, POWER6+, POWER7, POWER7+, or
POWER8 servers in 2U of 19-inch rack space. The EXP24S drawer includes redundant AC
power supplies and two power cords.
The EXP24S uses Gen2 or SFF-2 SAS drives that physically do not fit in the SFF-3 bays of
the Power S822 system unit.
The EXP24S drawer is attached to SAS ports on either a PCIe SAS adapter located in the
server or to the SAS ports on the rear of the server. Two SAS ports on the rear of the server
are enabled with the expanded-function storage backplane with dual IOA support (#EJ0U).
The SAS controller and the EXP24S SAS ports are attached using the appropriate SAS Y
or X cables.
The following internal SAS adapters support the EXP24S:
򐂰 PCIe2 LP RAID SAS Adapter Dual-port 6 Gb (#ESA2, CCIN 57B3)
򐂰 PCIe3 LP RAID SAS Adapter (#EJ0M, CCIN 57B4)
The SAS disk drives that are contained in the EXP24S SFF Gen2-bay Drawer are controlled
by one or two PCIe SAS adapters that are connected to the EXP24S through SAS cables.
The SAS cable varies, depending on the adapter being used, the operating system being
used, and the protection you want.
In addition to the existing SAS disks options, IBM has the following available disk model:
򐂰 1.2 TB 10K RPM SAS HDD in Gen-2 Carrier for AIX and Linux (#ESD3)
Statement of direction: IBM plans to introduce an PCIe I/O drawer which will expand the
number of PCIe Gen3/Gen2 slots available on POWER8 processor-based Power Systems.
Note: The EXP30 Ultra SSD Drawer (#EDR1 or #5888), the EXP12S SAS Disk Drawer
(#5886), and the EXP24 SCSI Disk Drawer (#5786) are not supported on the Power S822
server.