IBM AS/400e

AS/400e server 270 131
AS/400e server 270
• The system unit supports up to two disk unit controllers to control disks in the system
unit and #7104 Expansion Unit (if installed).
• The system unit supports up to six disks. The #7104 supports up to twelve disks. The
#5075 PCI Expansion Tower supports up to six disks and one disk controller.
• The default controller for a #5075 is the #2763 with #4748 optional.
• Disk protection levels:
– None: No protection
– 0040: Mirrored – device level
– 0041: Device parity protection (RAID) – all
– 0042: Mirrored - IOP level
• #4748 supports the #4331 1.6 Gb Read Cache Device
The following chart shows the defaults when the number of disk units and protection levels
are selected.
Magnetic Media Controllers
• #2749 PCI Ultra Magnetic Media Controller
• #2768 PCI Magnetic Media Controller
Number of Disks Protection System Unit #7104 #5075 Default Cont
1-6 none
0040
default - - #9767
4 - 6 0041 default - - #2763
7 - 12 none
0041, 0040
default default - #2763
4 - 12 0042 default default - 1 - #9767
1 - #2763
13 - 18 none
0041, 0040
default default - #4748
13 - 18 0042 default default default 1 - #9767
2 - #2763
19 - 24 none
0041, 0040
default default default 1 - #4748
1 - #2763
19 - 24 0042 default default default 1 - #9767
2 - #2763