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hp storage white paper
This allows the array to dynamically allocate and
de-allocate clusters of any RAID type without
affecting the logical view as seen from the server.
In other words, clusters can be moved and new
RAID 5 and RAID 1+0 stripes can be created or
extended dynamically without the host view being
changed and without system administrator
intervention.
Just as a file system on the host presents a virtualized
view of the storage to the application or user,
the virtual array presents a virtualized view of
the storage to the file system. For example, just
as you can create and delete files in a file system,
you can create and delete LUNs within the virtual
array. This degree of virtualization is what gives
the virtual array its unique ability to relieve the
system administrator of many of his/her mundane
storage management responsibilities.
the reasons you need more
virtualization in the array
•
capacity requirements will always grow
• IT departments will always have a limited
budget and limited human resources for
managing storage
• virtualization improves the efficiency of
storage administrators
• virtualization reduces the training required
for people to manage storage
• data always grows, but human head count
doesn’t—virtualization reduces the number
of people required to manage storage
key features of hp’s patented
virtual technology
• automatically stripes every LUN across all
disks in a very large redundancy group
Benefit: simplifies overall management;
reduces the number of LUNs required to
“hot spots”
1
• automatically adds new disk drives into
existing RAID groups
Benefit: capacity upgrades require no
IT training, are faster, and hot spots are
virtually eliminated
• dynamically, and without any human
intervention, optimizes the RAID level to
the application workload
Benefit: performance tunes the array 24
hours per day and eliminates downtime for
reconfigurations
• allows LUNs to be created in seconds
Benefit: reduces setup times
• allows immediate use of the array after
LUN configuration
Benefit: speeds implementation time
•
allows hundreds of LUNs to be created of
virtually any size—from a single megabyte
to over 2TB
Benefit: simplifies configurations, improves
application performance, and greatly
decreases management complexity and
potential for security errors
• allows any combination of disk drive
capacities and speeds within the array
Benefit: simplifies disk drive inventory
control and capacity management
• allows disk drives and controllers to be
moved to any slot in the array
Benefit: reduces the chance for human error
1.1
array virtualization defined
achieve a balanced workload and eliminates