1. ClusterLion Robert Graf | CEO Mobile +43 664 1314403

2. Overview ProLion-NetApp Alliance High Availability
Metro Cluster Challenges
ClusterLion Solution
ClusterLion vs. Common Solutions
ClusterLion Technology
Customer Benefits
References

3. NetApp Alliance
ProLion CEO Robert Graf: former NetApp Country Manager in Austria, 7 NetApp
ClusterLion only offered for NetApp MetroCluster
NetApp Alliance Partner
EU Distribution Partner: Arrow ECS

4. High Availability in IT
High Availability is a MUST in today’s IT world!
This applies accross industries
Mission –critical applications must be available at all times!
Therefore, permanent IT availability “Always ON” is a prerequisite for many companies and no longer an option.
Any downtime costs money and image

5. Cost of Downtime
The cost by industry and studies vary, but it is clear that IT downtime causes considerable damage!

6. Split-Brain Syndrome
Wikipedia: Split-brain indicates data or availability inconsistencies originating from the maintenance of two separate data sets with overlap in scope, either because of servers in a network design, or a failure condition based on servers not communicating and synchronizing their data to each other.
High-availability clusters usually use a heartbeat private network connection which is used to monitor the health and status of each node in the cluster. For example the split-brain syndrome may occur when all of the private links go down simultaneously, but the cluster nodes are still running, each one believing they are the only one running.

7. The Challenge of Every Storage Cluster
Every storage vendor on the market needs a quorum, witness or tie-breaker to run automatic switchover in case of site-failure!
Expensive infrastructure investments in a 3rd data center location and highly redundant interconnects form the primary data centers to the quorum site are required!
No infrastructure investment is needed, which offers the lowest possible TCO for automatic switchover.
ClusterLion is only available for NetApp MetroCluster.

8. 7 Mode or cDOT 2-Pack MetroCluster
stretched HA
system01 failed ! takeover!
cf giveback
Srvc (a)
Srvc (b)
A/A Controller Failure Scenario
1st Controller fails
Identity „moves“ to 2nd controller
I/O passes through 2nd controller
After repairing1st controller, issue „cf giveback“
Identity „moves“ back to 1st controller
Normal operations continue

9. SiteA down or site-connection broken?
7 Mode or cDOT 2-Pack MetroCluster
stretched HA
Srvc (a)
Srvc (b)
SiteA down or site-connection broken?
cf takeover -d
cf giveback
MC Site Failure Scenario
Entire Site A fails
2nd controller checks heartbeat, disk-connections and IP connection while still serving its data
Human or process on 3rd Site identifies site-failure
Issue „cf takeover –d“
Identity „moves“ to second controller

10. cDOT 4-Pack MetroCluster / local HA
stretched HA
local HA
local HA
MC Fabric
Srvc(a)
Srvc(b)
NO AUTOMATIC SWITCHOVER BETWEEN DATA CENTERS

11. ONTAP 8.3 MetroCluster DR Guide
Source:

12. ClusterLion – The Solution

13. Q ClusterLion A2 A1 B2 B1 SRV1 “Switchback” SRV2
Customer Support during Giveback
Switchover
Ethernet / SAN
2x RS232
2x Ethernet
Srvc(b)
2x RS232
2x Ethernet
Srvc(a)
Srvc(b)
MC Fabric A2 A1 B2 B1
100m
Grid
UPS
100m
Grid
UPS
Telco B
Telco A Q
Remote Quorum
Use Case: Power Outage
Monitoring:
Power Supply
Storage Controller
Partner Status
Heart-Beat
1. Reporting:
A2: Active Controller Heartbeat
A1: Lost Cluster Partner, NVRAM etc.
B2: No Controller Heartbeat
B1: Controller Error and Power Alarm
2. Action:
B2: Power Off
B1: Power Off
A2: Active Controller Heartbeat
A1: Force Takeover
Q: Open Helpdesk Ticket
Open Ticket
Partner Helpdesk

14. MetroCluster Switchover
Available solutions for NetApp MetroCluster switchover:
TieBreaker
Manual Switchover
ClusterLion
Support for 7-Mode and cDOT MC config. ✔
Continues operation even during site-failure X
Only two data centers are needed to run switchover
Highly secure against Split-Brain and data loss
Independet remote view on MetroCluster status
Very easy to install and operate

15. ClusterLion Technology

16. ClusterLion Technology
ClusterLion without Front Cover
„Hot Swap“ Battery

17. ClusterLion Technology
4x Power Input
Reset Button
4x Power Output
2x Serial Consol Port
2x Cooling Fans
6x Ethernet Connectivity
2x 24V Output for UMTS Gateways

18. ClusterLion Premium Support
Premium Support Contract:
24x7 Phone Support
Proactive notification of the Customer
Automatic support ticket at Storage Vendor
Support during cluster giveback
European Maintenance Partner: Econocom Osiatis

19. Customer Benefits
ClusterLion increases the availability of your NetApp MetroCluster.
Even in the event of a total failure at one location, cluster services are properly delivered. All applications remain available.
ClusterLion works with only two locations. This reduces costs and complexity.
A third site (Quorum) will be provided by ProLion free of charge.
ClusterLion prevents data corruption in case of Split Brain syndrome.
ClusterLion permanantly ensures a consistent state in the storage cluster.
ClusterLion can be retrofitted at any existing storage cluster.

20. The question is not if you can afford ClusterLion, but...
...if you can afford to operate without ClusterLion.
Thank you!