HP StorageWorks 1510i - Modular Smart Array, User Manual, Page: 36 / 160

• Depending on the number of physical hard drives included in a storage unit, the Storage
Management Utility may suggest RAID 6 (ADG) as the default RAID level, which offers a high
level of fault tolerance and usable disk capacity, but at a signi fi cant cost to I/O performance.
For comparable fault tolerance but higher performance, consider using RAID 1+0 when
fault tolerance is desired and performance is more important than usable capacity. Reserve
RAID 6 for situations when fault tolerance is desired, but usable capacity is more important
than performance.
• The SMU Initial Con fi guration Wizard creates one or more logical drives, creating the largest
logical drives possible (up to two Terabytes). The wizard detects the number of storage
enclosures, number of uncon fi gured hard drives, drive size, and other characteristics; and
then applies your selected RAID level and spare option to create the logical drives. If you
need greater control over the storage con fi guration, such as multiple, smaller logical drives,
or multiple logical drives with differing RAID levels, use the SMU main user interface to
con fi gure your system.
• The SMU Initial Con fi guration Wizard creates one target for the storage, with all logical
drives assigned to that target as LUNs. If multiple targets are needed for your environment,
use the SMU main user interface to con fi gure the logical drives, create the targets, and then
assign the logical drives to the targets as LUNs.
• After con fi guring the storage, remember to:
• Verify that each initiator has been granted access to the target.
• Control access to the storage through the use of VLANs, CHAP authentication, and ACLs.
• In active/active multipath environments, distribute ownership of the LUNs between the two MSA
controllers. Choose one of the following:
• Automatic load balancing (default)—MSA
fi rmware initially assigns ownership of all LUNs
to one of the two MSA controllers, and then automatically reassigns LUN ownership evenly
between the controllers based on I/O loads of the LUNs.
• Manual load balancing—Through the SMU or CLI, indicate the preferred path (controller
ownership) for each LUN.
• Draw physical and logical diagrams of your network.
• Hardware/Device diagram—Physical layout of the entire network, including device names
and cabling.
• Storage diagram—Hard drive and storage system arrangement and con fi guration, including
RAID levels.
• Path/Accessibility diagram—Access information, including which devices are allowed to
communicate with each other.
Preparing the site
To ensure continuous, safe, and reliable operation of your equipment, place your system in an approved
environment with adequate physical space, ventilation, and power.
• “ Providing structural support for the fl oor ” on page 36
• “ Providing clearance space and ventilation ” on page 37
•
“ Providing power sources ” on page 37
• “ Chassis speci fi cations ” on page 38
In addition to the following discussion, see for a detailed list of MSA1510i speci fi cations.
Providing structural support for the fl oor
Calculate the total weight of your equipment and verify that your site can support the weight.
For HP ProLiant server environments, consider using Rack Builder, a software tool that provides
a simpli fi ed method to planning and con fi guring racks and rack-mountable products. Rack
Builder is available on the Options tab of the ProLiant Home page of the HP servers website at
http://www.hp.com/country/us/eng/prodserv/servers.html .
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Installation