NTP should not be configured on both the hypervisor and the Guest OSs. Either the Guest
OS should use NTP to sync the time or the hypervisor should and the Guest OS should be
time synced to the hypervisor using VMtools.
VMware Features
The following VMware features have been tested with 5620 SAM. To ensure 5620 SAM
stability and compatibility, the following recommendations should be noted for each
feature:
vMotion
•
Always follow VMware best practices
•
Testing was performed with dedicated 10Gb connections between all hosts
High Availability
•
Always follow VMware best practices
•
Do not use Application Monitoring
•
Use Host or VM Monitoring only
•
Enable 5620 SAM database alignment feature to keep active servers in same Data
Center
Snapshots
•
Always follow VMware best practices
•
Do not include memory snapshots
•
Always reboot all 5620 SAM Virtual Machines after reverting to snapshots
•
5620 SAM performance can be degraded by as much as 30% when a snapshot exists
and therefore 5620 SAM performance and stability is not guaranteed
•
Snapshots should be kept for the least amount of time possible
•
Snapshot deletion can take many hours and will pause the VM several times
•
SAM Database failover will occur when VMs are reverted to snapshots, requiring a
re-instantiation of the Standby Database
KVM Virtualization
5620 SAM supports using RHEL 6.3 through 6.6 KVM using QEMU version 0.12.1.2
only, on x86 based servers natively supported by KVM. RHEL’s Hardware Compatibility
List (HCL) should be consulted to determine specific hardware support. Not all features
offered by KVM are supported when using 5620 SAM. For example, Live Migration,
Snapshots, or High Availability are not supported. Alcatel-Lucent should be contacted to
determine if a specific KVM feature is supported with a 5620 SAM installation.
Platform requirements
Hardware platform and resource requirements using
Virtualization
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5620 SAM
3HE-09809-AAAG-TQZZA 13.0 R7
Issue 1
December 2015
3-5
