Open systems Specialists: XiV Storage Reinvented. Presenter: Marcus Koenig

1. XIV – Storage Reinvented
Marcus König
Systems Consultant (Open Systems Specialists)
IBM Insight Forum 09 Make change work for you ®

2. 2
XIV Showcase
- Agenda -
XIV Overview
Live demonstration of an XIV system
Questions & Answers
IBM Insight Forum 09 Make change work for you
®

3. 3
Traditional Enterprise Storage Solutions
Scale Up
Building blocks: Interface Interface Interface
• Disks/Flash
• Cache
Controllers
• Controllers
• Interfaces PERFORMANCE
• Backplane
RELIABILITY = $$$
SCALABILITY
Cache
With this legacy architecture,
scalability is achieved by using
more powerful (and more
expensive) components.
JBOD JBOD
IBM Insight Forum 09 Make change work for you
®

4. 4
XIV Showcase
- Hardware Overview -
FC
Host Data Module
Host
iSCSI Data Module
Host
Ethernet
Data Module
Data Module
UPS UPS UPS

5. 5
XIV Showcase
- Differences -
highly scaleable
1TB Disk rebuild in under 40 min
no performance optimisation
necessary
no hotspots throughout the whole
system
tier-less architecture
ease of use
IBM Insight Forum 09 Make change work for you
®

6. 6
XIV Showcase
- Storage Distribution Algorithm -
Each volume (LUN) is spread across all drives
Data is “cut” into 1MB “partitions” and stored on the disks
XIV algorithm automatically distributes partitions across all disks in the
system pseudo-randomly
Interface Interface Interface
Switching
Data Module Data Module Data Module
IBM Insight Forum 09 Make change work for you
®

7. 7
XIV Showcase
- Storage Distribution Algorithm -
Data distribution only changes when the system changes
Equilibrium is kept when new hardware is added
Equilibrium is kept when old hardware is removed
Equilibrium is kept after a hardware failure
Data Module 1 Data Module 2
Node 1 Node 2
Data Module 3
Node 3
IBM Insight Forum 09 Make change work for you
®

8. 9
XIV Showcase
- Storage Distribution Algorithm -
Data distribution only changes when the system changes
Equilibrium is kept when new hardware is added
Equilibrium is kept when old hardware is removed
Equilibrium is kept after a hardware failure
Data Module 1 Data Module 2
Data Module 3 Data Module 4
Node 4
[ hardware upgrade ]
IBM Insight Forum 09 Make change work for you
®

9. 10
XIV Showcase
- Storage Distribution Algorithm -
Data distribution only changes when the system changes
Equilibrium is kept when new hardware is added
Equilibrium is kept when old hardware is removed
Equilibrium is kept after a hardware failure
[ hardware failure ]
Data Module 1 Data Module 2
Data Module 3 Data Module 4
IBM Insight Forum 09 Make change work for you
®

10. 11
XIV Showcase
- Live Demo -
short overview GUI
sample Host definition
sample LUN creation and Host attachment
Snapshot
Events and statistics
IBM Insight Forum 09 Make change work for you
®

11. 12
Thank you
Questions?
IBM Insight Forum 09 Make change work for you
®