Owner's Manual

Configuring Storage, Oracle User Equivalence, and Networking for Oracle RAC 53
fdisk /dev/emcpowera
NOTE: Create a partition on /dev/emcpowera before performing the following
steps.
x # expert mode
b # adjust starting block number
1 # choose partition 1
128 # set it to 128, (This is the default stripe element size on the
Dell\EMC CX series Fibre Channel storage)
w # write the new partition
The fdisk method is preferable to the LUN alignment offset method for
LUNs that have a snapshot, clone, or MirrorView image made of them. It is
also preferred for SAN copy sources and targets.
Procedure: Using the fdisk Utility to Adjust a Disk Partition
Use the following procedure to use the fdisk utility to adjust a disk partition.
1 At the command prompt, type the following:
fdisk <PartitionName> ,
where <PartitionName> is the name of the partition that you are
adjusting.
For example, if the partition name is
/dev/emcpowera, type:
fdisk /dev/emcpowera
The system displays the following message:
The number of cylinders for this disk is set
to 8782.
There is nothing wrong with that, but this is
larger than 1024, and could in certain setups
cause problems with:
1) software that runs at boot time (e.g., old
versions of LILO)
2) booting and partitioning software from
other OSs
(e.g., DOS FDISK, OS/2 FDISK)
2
At the command prompt, type the following fdisk utility argument: x
3
At the command prompt, type the following fdisk utility argument: b
4
When prompted for the partition number, type the partition number at
the command prompt. For example:
1