Transition Slide

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Transition Slide
The Benefits of the EVA Virtualization
2
Traditional Disk Array Approach
RAID Controller
3
Traditional Disk Array Approach
RAID Controller
Disk Groups RAID Level
RAID5
RAID1
Dedicated Spare Disk(s)
Spare
4
Traditional Disk Array Approach
RAID Controller
Presented LUNs
0
1
2
RAID5
RAID1
Spare
LUN 0
LUN 2
LUN 1
5
Traditional Disk Array Approach
RAID levels in separate small Disk Groups,
dispersed LUNs, beware of hot-spots
RAID Controller
Presented LUNs
0
1
2
5
7
3
6
4
Disk Groups RAID Level
RAID0
RAID5
RAID1
LUN 5
Spare
LUN 6
LUN 3
LUN 7
LUN 4
RAID5
RAID1
Dedicated Spare Disk
Spare
LUN 0
LUN 2
LUN 1
6
HP Virtual Array Approach
Disk groups, segments, block mapping tables
sparing
Virtual Array Controller
Spare Capacity
Block Mapping Table
Disk Group(s)
7
HP Virtual Array Approach
Disk groups

• An EVA can have
• 1 to 16 disk groups
• 8 to 240 disks per disk group

8
HP Virtual Array Approach
LUN/vdisk allocation
Virtual Array Controller
2
1
Presented LUNs
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HP Virtual Array Approach
LUNs/vdisks and their allocation

• An EVA can have
• from 1 to 1024 virtual disks/LUNs
• LUN sizes from 1GB to 2TB in steps of 1GB
• any combination of VRAID 0, 1, 5

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10
HP Virtual Array Approach
Capacity upgrade and load leveling
Virtual Array Controller
1
2
3
LUN 3
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HP Virtual Array Approach
Capacity upgrade, disk group growth
2
12
HP Virtual Array Approach
All RAID levels within a Disk Groups, optimal
striping, no hot-spots
Virtual Array Controller
1
3
2
Presented LUNs
Spare Capacity
Block Mapping Table
LUN 3 (RAID5)
Disk Group(s)
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HP Virtual Array Approach
Online Volume Growth
Virtual Array Controller
1
2
14
HP Virtual Array Approach
Online Volume Growth
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The value of the EVA virtualization

• Lower management and
• training costs
• Easy to use intuitive web-interface
• Unifies storage into a common pool
• Effortlessly create virtual RAID volumes (LUNs)
• Buy less
• Significantly increase utilization and reduce
  stranded capacity

• Improved application availability
• Enterprise-class availability
• Dynamic pool and Vdisk (LUN) expansion
• No storage reconfiguration down time
• Improve performance
• service more customers
• Vraid striping across all disks in disk group
• Eliminate I/O hot spots
• Automatic load leveling

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Questions?