This chapter describes the storage configuration for the Oracle Exalytics In-Memory Machine.
It contains the following topics:
Table 5-1 lists the disk partitions configured on the Oracle Exalytics In-Memory Machine.
Partition | Capacity | Hardware RAID | Mount Point | Description |
---|---|---|---|---|
boot |
99 MB |
RAID1 |
|
Boot partition |
base operating system, logs, and temp space |
447 GB |
RAID1 |
|
Partition for the base operating system, logs, and temp space |
Software, data files, and so on |
1.797TB |
RAID5 |
Not formatted or mounted in the factory, but intended to be mounted on |
Data partition |
Note:
Starting with Oracle Exalytics Release 1 Patchset 1 (1.0.0.1), the Storage Area Network (SAN) feature is supported. This section describes the procedure for connecting Exalytics to a Storage Area Network.
Connecting Exalytics to a Storage Area Network involves the following steps:
Before connecting the Oracle Exalytics In-Memory Machine to your data center's existing network, ensure that the following prerequisites are satisfied:
Fiber-optic media, short-wave, multimode fiber (400-M5- SN-S)
For more information, see "HBA Features and Specifications" in the StorageTek 8 Gb FC PCI-Express HBA Installation Guide Installation Guide For HBA Models SG-XPCIE1FC-QF8-Z, SG-PCIE1FC-QF8-Z, SG-XPCIE1FC-QF8-N, SG-PCIE1FC-QF8-NandSG-XPCIE2-QF8-Z, SG-PCIE2FC-QF8-Z, SG-XPCIE2-QF8-N, SG-PCIE2FC-QF8-N.
To prepare Oracle Exalytics In-Memory Machine for SAN Configuration, complete the following steps:
Configure the system to enable loading of the following kernal module at boot:
qla2xxx.ko
dm-multipath.ko
Initialize the /etc/multipath.conf
file by running the following command:
/sbin/mpathconf
Enable multipath startup during an operating system boot, by running the following commands as the root
user:
chkconfig multipathd on chkconfig --level 345 multipathd on service multipathd start
To connect the optical cable, complete the following steps:
Note:
The HBA does not allow normal data transmission on an optical link unless it is connected to another similar or compatible Fibre Channel product (that is, multimode to multimode).
Connect the fiber-optic cable to an LC connector on the HBA.
Figure 5-1 Connecting the Optical Cable: Dual Port HBA
Connect the other end of the cable to the FC device.
After the optical cable is connected to the HBA, you can power on the system, as described in Section 2.8, "Powering On the Machine".
For more information, see "Diagnostic Support for the Red Hat/SUSE OS" in the StorageTek 8 Gb FC PCI-Express HBA Installation Guide Installation Guide For HBA Models SG-XPCIE1FC-QF8-Z, SG-PCIE1FC-QF8-Z, SG-XPCIE1FC-QF8-N, SG-PCIE1FC-QF8-NandSG-XPCIE2-QF8-Z, SG-PCIE2FC-QF8-Z, SG-XPCIE2-QF8-N, SG-PCIE2FC-QF8-N.
To verify the connectivity, complete the following steps:
Check the status of the multipath daemon as follows:
[root@node1 ~]# service multipathd status multipathd (pid xxxx) is running...
Run multipath -ll
command to view the detailed information of the multipath devices as shown in the following example:
# multipath -ll mpath2 (3600144f0d153d65600004f90462c0003) dm-3 SUN,Sun Storage 7410 [size=100G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=1][active] \_ 7:0:0:0 sdc 8:32 [active][ready] \_ round-robin 0 [prio=1][enabled] \_ 8:0:0:0 sde 8:64 [active][ready] mpath3 (3600144f0d153d65600004f90464f0004) dm-4 SUN,Sun Storage 7410 [size=200G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=1][active] \_ 7:0:0:2 sdd 8:48 [active][ready] \_ round-robin 0 [prio=1][enabled] \_ 8:0:0:2 sdf 8:80 [active][ready]
In the above example, mpath2
and mpath3
are the two LUNs configured in the storage device.
Complete the following steps:
Mount the LUNs to a mount point:
# mount /dev/mapper/mpathXX <mount_point>
Note:
The multipath LUNs are available as block devices at: /dev/mapper/mpathXX
.
Add the mount point to /etc/fstab
to auto mount during an operating system boot.
For additional help or information regarding the storage configuration, contact the Oracle support personnel.