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Dell HPC NFS Storage Solution High Availability Configurations with Large Capacities
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release, do not refer to the instructions listed in the previous RHEL 5.5 NSS-HA solution guide
(4)
when
configuring HA on RHEL 6.1 based clusters.
4.4. Red Hat scalable file system package
In previous versions of NSS-HA, the version of XFS is 2.10.2-7 which is distributed with RHEL 5.5. In the
current version of NSS-HA, the version of XFS used is 3.1.1-4 and is distributed with RHEL 6.1. Dell
worked with Red Hat to enable support for NSS configurations l than 100 TB using this version of XFS.
Thus the most important feature of the current version of XFS for users is that it is able to support
greater than a 100 Terabytes of storage capacity.
4.5. Summary of changes
This section lists the similarities and differences between this release of the NSS-HA and prior versions.
Table 3 lists the similarities and difference in storage components. Table 4 lists the similarities and
differences in the NFS servers. Details of the complete test bed are provided in Section 5.2.
New storage components in this release Table 3.
Storage
components
Previous release
(4)
This version
Reason for update
Storage array
PowerVault MD3200 and MD1200s
No update
PowerVault
MD3200 firmware
-
Latest version to
support 3TB drives
New MD3200 firmware
needed for 3TB drive
support.
Disks in storage
array
2TB NL SAS
3TB NL SAS
Increased capacity,
denser solution.
RAID configuration
RAID 6 10+2, segment size 512K
No update
Capacities
supported
Up to 96TB in a
single file system.
192TB in two file
systems
Up to 288TB in a
single file system.
Larger capacities are
possible on a custom
basis. Please contact
your Dell sales team
for more information.
Increased capacities,
denser solution.
LVM configuration
for HA
HA-LVM
Clustered LVM
Clustered LVM is
supported in RHEL 6.1
and is the
recommended method.