Internal Magnetic Media 335
Internal Magnetic Media
This conversion allows the customer to move their 8.5 GB 10K RPM and 17 GB 10K RPM
files from current towers to the #5065/#5066 PCI Storage Tower, iSeries 270, and 8xx
servers.
After the conversion, process an RPO change to add a #4317 for each #4318 feature added,
and remove the appropriate number of #6717/#6817 and #6718/#6818 features.
RPQ 847123 10K RPM DASD Mounting 170 to 270
RPQ 847123 ships the disk mounting hardware and instructions required to convert
#6817/#8817 feature to #4317, and #6818/#8818 feature to #4318. This conversion allows
the customer to move their 8.58 GB 10K RPM and 17 GB 10K RPM files from the Model 170
to the Model 270.
After the conversion, process an RPO change to add a #4317 for each #4318 feature and
move the appropriate number of #6817/#8817 and #6818/#8818 features.
Load Source
Beginning with the V5R1 announcement, one of these specify codes is required on all initial
orders of an iSeries server:
• #0826 - #4314 Load Source specify
• #0827 - #4324 Load Source specify
• #0828 - #4317 Load Source specify
• #0829 - #4318 Load Source specify
Manufacturing uses this specify to place the corresponding disk unit feature in the load
source position. These specify codes can be changed on model upgrades or on simple MES
orders.
Disk Protection
This section looks at the functions that can be used to protect iSeries disk drives.
Device Parity Protection
Device parity protection is a hardware function that protects data from being lost because of a
disk unit failure or damage to a disk. Calculating and saving a parity value for each bit of data
protects data. Conceptually, the parity value is computed from the data at the same location
on each of the other disk units in the device parity set. When a disk failure occurs, the data on
the failing unit can be reconstructed by using the saved parity value and the values of the bits
in the same locations on the other disk.
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