HP StorageWorks 1510i - Modular Smart Array User Manual page 18

(MPIO multipathing software, etc.) in the configuration. Configure targets using portals
on each controller.
• Create fault-tolerant logical storage units—Create LUNs using fault-tolerant RAID levels and
striping methods.
• When assigning system names and aliases, use only the following characters:
• Uppercase alpha characters (A-Z)
• Lowercase alpha characters (a-z)
• Numeric characters (0-9)
• Special characters (! # = ( ) ' ; , . and space)
• When accessing the SMU, expand the browser to full screen or a minimum size of 1024 x 768
pixels. Other settings may distort the display or cause items to not display.
• When planning and configuring logical drives:
• Optimize performance and redundancy by striping the drives in the array across separate
storage enclosures on different SCSI buses, especially in mirrored environments using
RAID 1+0.
• Set the drive rebuild priority to high to minimize exposure during a drive failure.
• Customize the RAID level and striping method to the type of data that will be stored on the
logical drive.
NOTE:
Depending on the number of physical hard drives included in a storage unit, the SMU 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 significant 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 (ADG) for situations when fault tolerance is desired,
but usable capacity is more important than performance.
• After configuring 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.
• 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 configuration, including RAID levels.
• Path/Accessibility diagram—Access information, including which devices are allowed to
communicate with each other.
18 Overview