Installation guide
12
In table 9 is a summary of what the volume mapping looked like for a single P2000 array. Since we have a total of
48 volumes and 24 FC HBA ports we mapped two volumes to a primary and secondary FC HBA port spread across
two different controller ports and LUN numbers.
Table 9. Explicit mapping of the four 400GB volumes in P2000 enclosure 12 mapped to DL980 FC HBAs, Controller ports and LUN
numbers.
Volume Name
HOST ID (FC HBA)
Controller Port
LUN #
DATA_12_A1
50014380062ca7f6
5001438005665a84
A1
B1
1
2
DATA_12_A2
50014380062c9fb2
50014380062c9d52
A2
B2
1
2
DATA_12_B1
50014380062ca7f6
5001438005665a84
A1
B1
2
1
DATA_12_B2
50014380062c9fb2
50014380062c9d52
A2
B2
2
1
This configuration may appear complex, but the model is really simple, two dedicated FC paths for each vdisk to the
DL980 so as to optimize the bandwidth between the Linux operating system and the spinning hard drives. With 48
vdisks, effectively each of the 24 FC ports on the DL980 was dedicated to two vdisks (12 disk spindles). This allowed
us to maximize the I/O rates adequately for this solution.
Server configuration details
Reducing the cost of BI implementations, while improving the efficiency, are current priorities for many data center
managers. Many enterprises are achieving these goals by migrating their core BI data warehouse (DW), data marts,
operational data stores (ODS), and BI applications off of expensive and proprietary Oracle-Sun SPARC and IBM
POWER platforms and onto standards-based Intel servers. Also occurring in many enterprises is the reduction or
elimination of these costly BI silos by adopting a common integrated infrastructure. Reducing time to implementation
of a BI solution is a critical success factor and a common, integrated infrastructure improves the time to solution. The
HP ProLiant DL980 G7 server with Intel Xeon processor E7 series has been designed with the enterprise-wide BI
workload in mind.
The DL980 is well situated to solve the performance and fault-tolerant characteristics inherently desired in a BI
workload infrastructure. Supporting a performance optimized BI solution, the DL980:
Leverages enterprise functionality from HP Integrity enterprise servers for both performance and reliability
Contains up to 80 high-power Intel Xeon E7 processor cores
Provides up to 160 logical CPUs with Intel Hyper-Threading Technology to facilitate query parallelism which can
help in BI type workloads
Provides enterprise-level parallel access to storage with a measured 25GB/sec. sustained I/O throughput rate (as
measured in the 3TB TPC-H test) from up to 16 PCIe expansion slots
Provides up to 2TB of memory to facilitate large in-memory processing
To extend processing capabilities even further, it is recommended based on our lab testing to enable Intel Hyper-
Threading and each core will appear as two logical processors to the OS. Likewise, a single physical processor with
10 cores appears as 20 functional processors to both the OS and the Oracle database.
HP ProLiant DL980 G7 servers ship with Hyper-Threading enabled by default. Depending on the workload, Hyper-
Threading can increase system performance by up to 40% (20% is typical). This increase is seen most often in highly
parallelized workloads. Serial workloads (where progress in some application workstreams is heavily dependent on a
few serial tasks or there is some explicit contention on system resources) may experience a decrease in performance
when Hyper-Threading is enabled. Customers should always test their particular workload with and without Hyper-
Threading before committing to its use.
In addition, the DL980 contains HP’s PREMA Architecture, which brings many performance and scalability benefits
for processing the BI workload. Large numbers of processors in x86 servers typically create an inter-processor
communication overhead. To solve this issue for x86 servers, HP looked to the design of our higher-end ccNUMA