IBM Power ESE 8412-EAD, Manual

Page: 15 / 40

Table 1. SAS subsystem parts (continued)
Diagram
location
Part name Feature code (FC)
Customer card identification
numbers (CCINs)
Physical
location
codes
E Optional internal SAS
cables:
v Three-way split disk or
media backplane
configuration (cable FC
1815)
v
RAID configuration
with external drives
connected (cable FC
1819)
1815 or 1819
Notes:
v 1815 when FC 5662 is
not installed
1
v
1819 when FC 5662 is
installed
1
P2-T2
Optional rack-mounted
media drawer with SAS
tape and DVD bays
2
5720
Notes:
v Uses SAS PCIX 2.0
Controller (FC 5900
or 5912) with I/O
drawer (FC 5797,
5798, or 5791)
v Uses SAS Dual-x4
Controller (FC 5901)
with I/O drawer (FC
5803)
P2-C9-D7
1
For detailed configuration information, see “SAS storage configurations” on page 4.
2
The rack-mounted media drawer with SAS tape and DVD bays is an optional part, and hence is not shown in
the figure.
Feature details
SAS RAID adapters
The SAS RAID adapters have the following features:
v
PCI Express (PCIe) system interface
v
Physical link (phy) speed of 3 Gbps SAS supporting transfer rates of 300 MB per second
v
Optimized for SAS disk configurations that use dual paths through dual expanders for
redundancy and reliability
v
Adapter managed path redundancy and path switching for multiported SAS devices
v Embedded PowerPC RISC processor, hardware XOR DMA Engine, and hardware Finite Field
Multiplier (FFM) DMA Engine (for Redundant Array of Independent Disks (RAID) 6)
v
Support for RAID 0 and 10 disk arrays
v
Additional features when the 175 MB Cache RAID – Dual IOA enablement card is installed:
– Adapters support nonvolatile write cache
– Support for RAID 5 and 6 disk arrays
– Adapters configured in dual storage IOA or high availability (HA) RAID mode for best
reliability and availability
v
RAID disk arrays supported as a boot device
v Advanced RAID features:
– Hot spares for RAID 5, 6, and 10 disk arrays
– Ability to increase the capacity of an existing RAID 5 or 6 disk array by adding disks
– Background parity checking
SAS subsystem
3