IBM Power 720 Overview page 84

Figure 2-16 shows the double-wide adapter and SSD modules.
Figure 2-16 The PCIe RAID and SSD SAS Adapter and 177 GB SSD modules
To connect to external SCSI or SAS devices, the adapters listed in Table 2-15 are available.
Table 2-15 Available PCIe RAID and SSD SAS adapters
Feature
code
a
2053
2054
b
2055
a. Supported only in the rack-mount configuration. VIOS attachment requires Version 2.2
or later.
b. Supported only in a FC 5802 and FC 5877 PCIe I/O drawer. Not supported in the Power 720
and Power 740 system unit. If used with the VIOS, Version 2.2 or later of VIOS is required.
Note: For a Power 720 tower configuration, placing PCIe-based SSDs in a FC 5802 and
FC 5877 PCIe I/O drawer is possible.
The 177 GB SSD Module with enterprise multi-level cell (eMLC) uses a new enterprise-class
MLC flash technology, which provides enhanced durability, capacity, and performance. One,
two, or four modules can be plugged onto a PCIe RAID and SSD SAS adapter, providing up
to 708 GB of SSD capacity on one PCIe adapter.
Because the SSD modules are mounted on the adapter, to service either the adapter or one
of the modules, the entire adapter must be removed from the system. Although the adapter
can be hot-plugged when installed in a FC 5802 or FC 5877 I/O drawer, removing the adapter
also removes all SSD modules. So, to be able to hot plug the adapter and maintain data
availability, two adapters must be installed and the data mirrored across the adapters.
Under AIX and Linux, the 177 GB modules can be reformatted as JBOD disks, providing
200 GB of available disk space. This way removes RAID error correcting information, so it is
best to mirror the data using operating system tools to prevent data loss in case of failure.
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IBM Power 720 and 740 Technical Overview and Introduction
177 GB 177 GB
SSD SSD
177 GB 177 GB
SSD SSD
CCIN Adapter description
57CD PCIe LP RAID and SSD
SAS adapter 3 Gb
57CD PCIe RAID and SSD SAS
3 Gb
57CD PCIe RAID and SSD SAS
adapter 3 Gb with Blind
Swap Cassette
SAS
Cntrl
Slot Size
PCIe Low profile,
double wide, short
PCIe Double wide, short
PCIe Full height inside a
blind swap cassette
(BSC),
double wide, short
OS support
AIX, IBM i,
Linux
AIX, IBM i,
Linux
AIX, IBM i,
Linux