13. 13
Hardware
Local
Cluster
Heartbeat
Global
Cluster
Heartbeat
VMware ESX Server Console OS
Veritas Cluster Server
Veritas Cluster Server 5 for VMware ESX Server
App Agent
App1
Virtual
Machine1
App3
Virtual
Machine3
App Agent
App2
Virtual
Machine2
Hardware
VMware ESX
Server Console OS
VCS
No Target
Virtual
Machines
Required
Shared
Storage
Hardware-Based
Data Replication
Primary Site
ESX Server Node A
Secondary Site
ESX Server Node C
Hardware
VMware ESX Server
Console OS
VCS
No Target
Virtual
Machines
Required
Primary Site
ESX Server Node B
DR Agent
DR Agent
14. 14
Hardware
VMware ESX Server Console OS
Veritas Cluster Server
VCS in Action
App Agent
App1
Virtual
Machine1
App3
Virtual
Machine3
App Agent
App2
Virtual
Machine2
Hardware
VMware ESX
Server Console OS
VCS
Local
Cluster
Heartbeat
Shared
Storage
Global
Cluster
Heartbeat
Primary Site
ESX Server Node A
Secondary Site
ESX Server Node C
Hardware
VMware ESX Server
Console OS
VCS
No Target
Virtual
Machines
Required
Primary Site
ESX Server Node B
DR Agent
App3
Virtual
Machine3
DR Agent
Hardware-Based
Data Replication
15. 15
Hardware
VMware ESX Console OS
Veritas Cluster Server
App Agent
App1
Virtual
Machine1
App3
Virtual
Machine3
App Agent
App2
Virtual
Machine2
Hardware
VMware ESX
Console OS
VCS
No Target
Virtual
Machines
Required
Local
Cluster
Heartbeat
Shared
Storage
Global
Cluster
Heartbeat
Primary Site
ESX Node A
Secondary Site
ESX Node C
Hardware
VMware ESX
Console OS
VCS
No Target
Virtual
Machines
Required
Primary Site
ESX Node B
App Agent
App1
Virtual
Machine1
App Agent
App2
Virtual
Machine2
DR Agent DR Agent
Hardware-ased
Data Replication
VCS in Action
First, vulnerability. How can we resolve this concern?
Fire Drill splits BCV snaps at remote site, mounts the BCV, then starts the SG on the mount
Requires SF 5.0: BCV of a VM diskgroup will create 2 identical diskgroups; SF 5.0 renames the DG on the BCV’s so VM can import them
Fire Drill SGs are isolated from production SGs, ensuring no production impact
Prevents concurrency violation
Walkthrough
Setup: VCS HA/DR running as normal
Click 1: Initiate Fire Drill. The Fire Drill Agent takes a snapshot of the replicated data (Business Continuity Volume).
Click 2: Mount Snapshot. Fire Drill modifies the snapshot volume metadata (via Storage Foundation 5.0) so that the snapshot can be re-imported back on the original host. Fire Drill imports the BCV and mounts the necessary filesystems.
Click 3: Test App. Fire Drill starts up the target Service Group and all its required resources. The test SG is a clone of the production SG and does not impact production. The Service Group starts successfully and we know that we are fully protected at this point in time.
Click 4: Reset. Fire Drill shuts down the target SG, unmounts the snapshot and returns the snapshot storage to the array.