IBM Power Systems Series, Руководство пользователя

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• For support details, see the Linux Alert website (http://www14.software.ibm.com/webapp/set2/sas/f/
lopdiags/info/LinuxAlerts.html).
This adapter requires the following drivers:
• AIX: devices.pci.14104A0 device driver package
PCIe3 RAID SAS quad-port 6 Gb adapter (FC EJ0K; CCIN 57B4)
Learn about the specifications and operating system requirements for the feature code (FC) EJ0K
adapter.
Overview
The PCIe3 RAID SAS quad-port 6 Gb adapter is a PCI Express (PCIe), generation 3, SAS RAID adapter
that has a low-profile, short-form factor, but packaged for full height installation. The adapter is used in
high-performance and high-density, serial attached SCSI (SAS) applications. It supports the attachment
of SAS disk by using four mini SAS high-density (HD) x4 connectors that allow the physical links to be
used in various narrow and wide-port configurations. The adapter does not have write cache.
The adapter is a 64 bit, 3.3 V, bootable SAS adapter that provides RAID 0, 5, 6, and 10 capability, and
system level mirroring via the operating system. The adapter provides both single and dual RAID
controller configurations. The exception to this is when installed in PCIe slots C09 and/or C012 of the IBM
Power System E950 (9040-MR9), the adapter will only run in single controller mode. In dual controller
configurations (dual storage IOA) all attached devices must run RAID. JBOD (512 byte) functionality is
supported only in a single controller configuration based on the operating system. Best performance is
achieved when multiple RAID sets are configured and optimized under a pair of adapters in a high
availability, multi-initiator RAID configuration (dual storage IOA) which allows for an Active-Active mode
of operation.
Note: Dual controller configuration (dual storage IOA) is not supported when FC EJ0K is installed in PCIe
slots C09 or C012 of the 9040-MR9.
The adapter supports a maximum of 98 attached disk devices that depends on the drive enclosure
attached. A maximum of 48 devices can be solid-state devices (SSDs). Externally attached devices are
designed to run at a maximum data rate of 6 Gbps for SAS disk devices. Specific device attachment rules
apply. This adapter supports the multi-initiator and high availability (dual storage IOA) configurations in
AIX, IBM i, and Linux partitions. This adapter enables configuring the SAS drives as dedicated hot-spares
with equal or higher capacity.
Note: When FC EJ0K is installed in PCIe slots C09 or C12 of the 9040-MR9 controlling the internal SAS
drive bays, any external disk drive enclosures attached must be configured in zone mode 2 only.
Figure 45 on page 139 shows the adapter. The connector plug (A) is installed in an empty port and
prevents damage to that port whenever a cable for the adjacent port connectors is plugged-in or
removed.
138 Power Systems: Managing PCIe adapters