Chapter 4. IBM iSeries 270 models 127
#5580 #5580 - 2780 Controller with Auxiliary Write Cache
The #5580 provides a disk controller with auxiliary write cache to improve cache data redundancy. The #5580 includes a
#2780 PCI-X Ultra4 RAID Disk Controller and a secondary IOA with 757MB of auxiliary maximum compressed write cache.
The #2780 and the secondary IOA each require one PCI-X slot and must be installed together in the same system unit or
I/O unit/drawer/tower. The #2780 and the auxiliary write cache IOA are connected by a SCSI cable (provided). Feature
#2780 does not appear on IBM ordering, shipping, or inventory documentation.
The connecting SCSI cable is attached to port four of the #2780, 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 #2780,
depending on the system unit or I/O unit/drawer/tower in which the #2780 is installed. No disk drives are driven by the
auxiliary write cache IOA.
For more details regarding auxiliary write cache, refer to Planning for eServer i5 Data Protection with Auxiliary Cache
Solutions, REDP-4003 at:
http://w3.itso.ibm.com/redpieces/abstracts/redp4003.html?Open
Minimum operating system level: OS/400 V5R2 with CUM C5123520 and prerequisite PTFs.
#5581 #5581 - 2757 Ctlr with Aux Write Cache
The #5581 provides a disk controller with auxiliary write cache to improve cache data redundancy. The #5581 includes a
#2757 PCI-X Ultra4 RAID Disk Controller and a secondary IOA with 757MB of auxiliary maximum compressed write cache.
The #2757 and the secondary IOA each require one PCI-X slot and must be installed together in the same system unit or
I/O unit/drawer/tower. The #2757 and the auxiliary write cache IOA are connected by a SCSI cable (provided). Feature
#2757 will not appear on IBM ordering, shipping, or inventory documentation.
The connecting SCSI cable is attached to port four of the #2757, 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 #2757,
depending on the system unit or I/O unit/drawer/tower in which the #2757 is installed. No disk drives are driven by the
auxiliary write cache IOA.
For more details regarding auxiliary write cache, refer to Planning for eServer i5 Data Protection with Auxiliary Cache
Solutions, REDP-4003 at:
http://w3.itso.ibm.com/redpieces/abstracts/redp4003.html?Open
Minimum operating system level: OS/400 V5R2 with cumulative PTF package C5123520 and prerequisite PTFs .
#5702 #5702 PCI-X Ultra Tape Controller
The #5702 PCI-X Ultra Tape Controller provides a SCSI Ultra PCI attachment capability for external tape devices, and
removable media devices. The #5702 has two ports that can attach two external tape devices. Each port can support at a
minimum one of the following devices:
3580-L23 IBM TotalStorage Ultrium 2 Tape Drive
3583-LXX IBM Ultrium Scalable Tape Library
3584-L32 or D32 Ultrascalable Tape Library
7206-VX2 80 GB VXA-2 External Tape Drive
7207-122 QIC-SLR Tape Bridge Box (4 GB External ¼-inch Cartridge Tape Drive)
7208-345 60 GB External 8mm Tape Drive
7210-020 External CD-ROM
7210-025 External DVD-RAM
7329-308 SLR100 ¼-inch Tape Autoloader
See 9.5.4, “#5712, #5715, #5702, #5705, #2718, and #2768 PCI Magnetic Media Controller: Device cabling rules” on
page 370, for information about connecting devices to the #5702 including daisy-chaining options.
A #5702 or #5712 running in an i5OS or OS/400 partition cannot drive internal disk units in any expansion tower, base I/O
tower or system unit enclosure.
Minimum operating system level: OS/400 V5R2
The #5702 is a Customer Install Feature.
The #5702 was withdrawn from marketing on 01 June 2006. The #5712 PCI-X Tape Controller is the recommended
replacement
.
