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Dell HPC NFS Storage Solution High Availability (NSS-HA) Configurations with Dell PowerEdge 12th
Generation Servers
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between the current and previous NSS-HA releases to identify their major similarities and differences
using the following two tables:
 Table 4 provides the information about storage subsystem.
 Table 5 lists the major similarities and differences in the NFS servers.
Storage components in NSS-HA Table 4.
Storage
components
NSS3-HA release
(February 2012)
“Large capacity configuration”
NSS4-HA release
(July 2012)
“PowerEdge 12
th
Generation
based solution”
Storage array
Dell PowerVault MD3200 and MD1200s
144TB solution: 4 arrays (1 Dell PowerVault MD3200 + 3 Dell PowerVault
MD1200s ): 48 drives
(12 disks/array x 4 arrays x 3TB/disk), 109TB usable space.
288TB solution: 8 arrays (1 Dell PowerVault MD3200 + 7 Dell PowerVault
MD1200s): 96 drives
(12 disks/array x 8 arrays x 3TB/disk), 218TB usable space.
Dell PowerVault
MD3200 firmware
Latest version to support 3TB drives.
New Dell PowerVault MD3200 firmware needed for 3TB drive support.
Disks in storage
array
3TB NL SAS
Virtual disk
configuration
RAID 6 10+2, segment size 512K
Write cache mirroring enabled
Read cache enabled
Dynamic cache read prefetch enabled
Storage enclosure
cabling
The asymmetric ring cabling scheme
Capacities
supported
Up to 288TB for standard configurations.
Up to 2x288TB for XL configurations
Increased capacities, denser solution.
LVM configuration
for HA
Clustered LVM.
Clustered LVM is supported in RHEL 6.1 and is the recommended
method.
Note: NSS-HA XL configuration is also available for each NSS-HA release; contact your Dell sales
representative for detailed information.