Owner's Manual

Configuring Database Storage on the Host 65
5 In the /proc/partitions file, ensure that:
• All PowerPath pseudo devices appear in the file with similar device
names across all nodes.
For example:
/dev/emcpowera , / dev/emcpowerb , and /dev/emcpowerc .
• In the case of the PowerVault MD3000, MD3000i, or the EqualLogic
storage array, all the virtual disks or volumes appear in the file with
similar device names across all nodes.
For example:
/dev/sdb , /dev/sdc , and /dev/sdd
• The external storage logical volumes appear as SCSI devices and each
node is configured with the same number of LUNs, virtual disks,
or volumes. For example, if the node is configured with a SCSI drive
or RAID container attached:
On a Fibre Channel storage device with three logical disks:
•
sda identifies the node’s RAID container or internal drive
•
emcpowera , emcpowerb , and emcpowerc identifies the LUNs
(or PowerPath pseudo devices)
On a direct-attached SAS or iSCSI storage device with three virtual
disks:
•
sda identifies the RAID container or internal drive of the node
•
sdb , sdc , and sdd identifies the external storage logical volumes
6 If the external storage devices do not appear in the /proc/partitions file,
reboot the node.