POWER7 information

PCI-X DDR 1.5 GB cache SAS RAID Adapter (FC 5908; CCIN 575C)

Learn about the specifications and operating system requirements for the feature code (FC) 5908 adapter.

Overview

The PCI-X DDR 1.5 GB cache SAS RAID Adapter is a SAS disk controller with a maximum of 1.5 GB compressed write cache and a maximum 1.6 GB compressed read cache. Auxiliary write cache and concurrent battery maintenance are provided. The controller is implemented using two physical adapters that are securely connected to form a double-wide adapter. The double-wide adapter requires two adjacent Peripheral Component Interconnect-X (PCI-X) slots. The auxiliary write cache side of the double-wide adapter contains a dual, concurrently maintainable cache battery pack which maintains cache memory on both adapters in the event of an abnormal termination.

When used in a logical partition (LPAR) environment, this double-wide adapter must have both slots of the adapter assigned to the same logical partition. When implementing dynamic LPAR (DLPAR), both slots of the adapter must be managed together. Feature 5908 indicates a gen-3 blind swap cassette. This feature is used in the 5790 and 5796.

575C is the CCIN number on the write-cache adapter.

The adapter provides RAID 0, RAID 5, RAID 6, and RAID 10 for the AIX® and Linux operating systems. Under the IBM® i operating system, mirroring and data spreading are provided by the operating system, and RAID 5 and RAID 6 are provided by the adapter. 1

The adapter provides three mini-SAS 4x connectors for the attachment of SAS drives located in 5886 EXP 12S Expansion Drawers. The adapter supports a maximum of five 5886 EXP 12S Expansion Drawers.1 With proper cabling and configuration, multiple wide ports are used to provide redundant paths to each dual port SAS drive. The adapter manages SAS path redundancy and path switching should a SAS failure occur.

This adapter supports the multi-initiator and high availability configurations. With the optional pairing of adapter sets, an even higher level of protection is provided by using a dual controller I/O configuration1 to protect against the failure of an entire adapter set. In such a high availability I/O configuration, SAS X cables are used to attach 5586 EXP 12S Expansion Drawers, and the fourth (top) mini-SAS connector on each card set is used to directly connect the card sets by using a SAS AA cable. See Serial attached SCSI cable planning for more information.
Important: See the SAS RAID controllers for AIX, SAS RAID controllers for Linux, or SAS RAID controllers for IBM i topics for more information and important considerations for multi-initiator and high availability or dual storage IOA configurations
The following figure shows the adapter.
Figure 1. PCI-X DDR 1.5GB cache SAS RAID Adapter
SAS RAID adapter
Note: Port T3 does not support any device attachment. T3 is only used in dual controller I/O configurations for adapter to adapter communication.

For details about slot priorities and placement rules, see the PCI adapter placement topic collection for your system.

Specifications

Item
Description
Adapter FRU number
44V8622 (Adapter only) (Designed to comply with RoHS requirement.)
44V7627 (Adapter in a gen-2.5 blind swap cassette)
Battery FRU number
42R3965 or 74Y5665 (Designed to comply with RoHS requirement.)
I/O bus architecture
PCI-X
Slot requirement
Two, long, adjacent PCI-X slots.
Cables
SAS device attachment requires specific cables that are provided with the subsystem or device features being attached. Special cabling is required for multi-initiator and high availability configurations. See Serial attached SCSI cable planning.
Voltage
3.3V
Form factor
Long
Maximum number
For the maximum adapters supported, see the PCI adapter placement topic collection for your system.
Attributes
  • SAS speed: 3 Gbps
  • SAS, SAS Serial SCSI Protocol (SSP) and Serial Management Protocol (SMP) supported
  • Single controller supported with SAS y cables (3692, 3693, 3694)
  • Dual controller supported with SAS x cables (3661, 3662, 3663) and SAS AA cable (3681, 3682)
  • Single controller supports mirrored write cache data with auxiliary cache
  • Dual controller supports mirrored-write cache data and mirrored-RAID parity footprints between card sets
  • Solid-state drives (SSDs) supported
  • Removable media devices are not supported

Operating system or partition requirements

If you are installing a new feature, ensure that you have the software that is required to support the new feature and that you determine whether there are any prerequisites for this feature and attaching devices. To check for the prerequisites, see IBM Prerequisite website .

The adapter is supported on the following versions of the operating systems:
  • AIX
    • AIX Version 7.1, or later
    • AIX Version 6.1, or later
    • AIX Version 5.3, or later
  • Linux
    • Red Hat Enterprise Linux 5.6 for POWER®, or later.
    • Novel SUSE Linux Enterprise Server 11 Service Pack 1, or later.
  • IBM i
    • IBM i 7.1, or later
    • IBM i 6.1, or later
This adapter requires the following drivers:
  • AIX: devices.pci.1410bd02 device driver package
  • Linux:
    • iprutils version 2.4.1 and ipr driver version 2.0.11.6 (or later) for RHEL4 kernels
    • iprutils version 2.4.1 and ipr driver version 2.2.0.2 (or later) for RHEL5 kernels
    • iprutils version 2.4.1 and ipr driver version 2.2.0.2 (or later) for SLES10 kernels

Concurrent maintenance procedure

Concurrent maintenance of this double-wide adapter is not supported through the Hardware Management Console (HMC). Concurrent maintenance must be done from within the partition operating system. In IBM i, the Hardware Service Manager (HSM) of the system or owning partition automatically turns off or turns on the power on both PCI slots when either slot is selected.In AIX or Linux , you must manually power off and on each slot separately.

Important:
  • You must turn off the power to both PCI slots if you are installing or removing this adapter with the power to the system turned on.
  • If this adapter is the load source IOA, or any other storage IOA with critical DASD attached for the system, this concurrent maintenance procedure should be done by a qualified service provider.


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Last updated: Wed, January 17, 2018