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IBM AS400 iSeries IBM 574F Auxiliary-write cache IOA 42R5133 42R5130 The IBM 574F is an auxiliary-write cache IOA that provides 1.5 GB of compressed auxiliary-write cach.. Product #: 574F-42R5133-42R5130

IBM 574F Auxiliary-write cache IOA 42R5133 42R5130 0641 0649 5582 5583 5590

Brand: IBM AS400 iSeries
Model Number: 574F-42R5133-42R5130
Tags: IBM 574F , 42R5133 , 42R5130

The IBM 574F is an auxiliary-write cache IOA that provides 1.5 GB of compressed auxiliary-write cache when paired with a IBM RAID disk controller, has 42R5133 and 42R5130 part numbers, and has 0641, 0649, 5582, 5583 and 5590 feature codes. The IBM 574F is an auxiliary-write cache IOA mirrors the write cache of the RAID disk-controller IOA that it is connected. If a failure occurs, the IBM 574F auxiliary-write cache IOA provides a backup copy during the recovery of the failed IOA.

The IBM 574F auxiliary-write cache IOA can be used with IBM 5738, 5777, 2780, 2757, disk controllers.
The IBM 574F can be used as a replacement IOA for the 5708 auxiliary-write cache IOA. 
The 0641 includes a direct attach 2780 Peripheral Component Interconnect-X (PCI-X) Ultra4 RAID Disk Controller and a CCIN 574F auxiliary-write cache IOA.
The IBM 0649 includes a direct attach 5738 PCI-X Quad-Channel Ultra320 SCSI RAID Adapter and a CCIN 574F auxiliary-write cache IOA
The IBM 5582 includes an IOP-based 5738 PCI-X Quad-Channel Ultra320 SCSI RAID Adapter and a CCIN 574F auxiliary-write cache IOA. 
The IBM 5583 includes an IOPless, 5777 PCI-X Quad-Channel Ultra320 SCSI RAID Adapter and a CCIN 574F auxiliary-write cache IOA
The IBM 5590 includes a 2780 PCI-X Ultra4 RAID Disk Controller and a CCIN 574F auxiliary-write cache IOA.

The IBM i disk controller IOA and the secondary IBM 574F auxiliary-write cache IOA each require one PCI-X slot and must be installed together in the same enclosure. The disk controller IOA and the IBM 574F auxiliary-write cache IOA are connected by a SCSI cable (provided). The connecting SCSI cable is attached to SCSI bus port 3 of the disk controller IOA, reducing the number of SCSI buses that support disk drives from four to three. The reduction of SCSI buses can also reduce the number of disk drives supported by the disk controller, depending on the enclosure in which the disk controller is installed. No disk drives are driven by the auxiliary-write cache IOA.

Note: When 574F is used with the 2780 or 2757 controller, the feature is supported in V5R2 or later. When 574F is used with the 5738 or 5777 controller, the feature is supported in V5R3 or later.