vSphere 4.1 enables higher consolidation ratios with unequaled performance by providing groundbreaking new memory management technology and expanding its resource pooling capabilities with new granular controls for storage and the network. The platform also offers dramatic “cloud scale” to support even the largest environments.
Compute/Performance
-Memory Compression – Increase application performance by up to 30% by reducing memory contention as a bottleneck
Storage
- Storage I/O Control – Set storage quality of service priorities per virtual machine for guarantee millisecond access to storage resources
-Performance Reporting – Deliver key storage performance statistics regardless of storage protocol.
Network
- Network I/O Control – Set network quality of service priorities per flow type for guaranteed access to network resources.
Scalability
-vSphere 4.1 –Fully virtualize the data center and scale at least 2x more than ever before.
VMs per Cluster – 3,000 (3x vSphere 4.0)
Hosts per vCenter – 1,000 (3x vSphere 4.0)
Virtual Machines per Data Center – 5,000 (2x vSphere 4.0)
vSphere 4.1 extends its award winning availability and security capabilities with the world’s fastest live migrations and the ability to respond in parallel to any business need or change. Application services enhancements deliver new status details for high availability, tighter integration with an existing directory service, and new granular policies for virtual machine load-balancing.
Availability
- vMotion – Speed and scale enhancements to vMotion deliver superior platform response and availability by migrating virtual machines up to 5x faster and enabling up to eight vMotion events in parallel.
- VMware High Availability (HA) – Deeper diagnostic and health check for VMware High Availability (HA) further enhances the already high levels of availability for virtual machines.
Security
- Active Directory integration –Seamless user authentication at the ESX or ESXi host (rather than vCenter Server) for centralized user management. Easily assign privileges to users or groups plus roll out permission rules across hosts.
Control
-DRS Host Affinity – Set granular policies for virtual machine movement (for example, restricting a virtual machine to a specific host due to licensing impact).
vSphere 4.1 builds on the VMware ecosystem not only in terms of increased hardware and software support but also by opening new possibilities for tie-in with cloud computing.
Open and Interoperable Architecture
– vSphere 4.1 enables partners to leverage new storage APIs for array integration (for availability requirements). The vSphere platform can also be leveraged through the new vCloud API for an open and interoperable computing model in the cloud.
Expanded Support
– The vSphere 4.1 latest hardware compatibility list (HCL) expands the platform to support more operating systems, devices, applications, and service providers than any other virtualization platform. This also now includes new support for 3rd party serial port concentrators (for enhanced management) and the latest x86 processors on the market.
Chart defines the key scale improvements with the 4.1 release.
Feature delivers quality-of-service capabilities for storage I/O in the form of I/O shares and limits that are enforced across all virtual machines accessing a datastore, regardless of which host they are running on. Using Storage I/O Control, vSphere administrators can ensure that the most important virtual machines get adequate I/O resources even in times of congestion.
Engaged as needed, nothing happens when there is zero contention.
Block based only, not supported with NFS
Reporting delivers enhanced visibility into storage throughput and latency of hosts and virtual machines, and aids in troubleshooting storage performance issues. NFS statistics (1st time) are now available in vCenter Server performance charts, as well as esxtop. New statistics for virtual machine for VMDK and datastore provide virtual machine insight. All statistics are available through the vSphere SDK.
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Feature delivers traffic-management controls allow flexible partitioning of physical NIC bandwidth between different traffic types, including virtual machine, vMotion, FT, and IP storage traffic. (enabled with Distributed Switch only.)
Engaged as needed, nothing happens when there is zero contention.
Compressed memory is a new level of the memory hierarchy, between RAM and disk. Slower than memory, but much faster than disk, this feature improves the performance of virtual machines when memory is under contention, because less virtual memory is swapped to disk as a result.
DRS provides the ability to set constraints that restrict placement of a virtual machine to a subset of hosts in a cluster. This feature is useful for enforcing host-based ISV licensing models, as well as keeping sets of virtual machines on different racks or blade systems for availability or performance reasons.
Rules granularity (Hard and Preferential)
vMotion (note slight name change) enhancements significantly reduce the overall time for host evacuations, with support for more simultaneous virtual machine migrations and faster individual virtual machine migrations. The result is a performance improvement of up to 5x for an individual virtual machine migration, and support for four to eight simultaneous vMotion migrations per host, depending on the vMotion network adapter (1GbE or 10GbE respectively).
HA Healthcheck Status
HA provides an ongoing healthcheck facility to ensure that the required cluster configuration is met at all times. Deviations result in an event or alarm on the cluster.
HA Operational Status
A new Cluster Operational Status window displays more information about the current HA operational status, including the specific status and errors for each host in the HA cluster.
Improved HA-DRS interoperability during HA failover
DRS will perform vMotion to free up contiguous resources (i.e. on one host) so that HA can place a VM that needs to be restarted
See descriptions for full details
VAAI supported with Dell/Equal Logic, HDS, NetApp, EMC, and HP arrays
FT
DRS Interoperability for VMware HA and Fault Tolerance (FT) — FT virtual machines can take advantage of DRS functionality for load balancing and initial placement. In addition, VMware HA and DRS are tightly integrated, which allows VMware HA to restart virtual machines in more situations.
VMware Fault Tolerance (FT) Enhancements — vSphere 4.1 introduces an FT-specific versioning-control mechanism that allows the Primary and Secondary VMs to run on FT-compatible hosts at different but compatible patch levels. vSphere 4.1 differentiates between events that are logged for a Primary VM and those that are logged for its Secondary VM, and reports why a host might not support FT. In addition, you can disable VMware HA when FT virtual machines are deployed in a cluster, allowing for cluster maintenance operations without turning off FT.
Enhanced Network Logging Performance — Fault Tolerance (FT) network logging performance allows improved throughput and reduced CPU usage. In addition, you can use vmxnet3 vNICs in FT virtual machines
Host Profiles
Cisco support
PCI device ordering (support for selecting NICs)
iSCSI support
Admin password (setting root password)
PSA configuration
Orchestrator
provides a client and server for 64-bit installations, with an optional 32-bit client.
performance enhancements due to 64-bit installation
Nexus
Easier software upgrade
In Service Software Upgrade (ISSU) for VSM and VEM
Binary compatibility
Weighted Fair Queuing (s/w scheduler)
Increased Scalability
SPAN to and from Port Profile
VLAN pinning to PNIC
Installer app for VSM HA and L3 VEM/VSM communication
Start of EAL4 Common Criteria certification
4094 active VLANs
Scale Port Profiles > 512
Network
Network Performance & Scale Improvements
vmkernel TCP/IP stack—vMotion, NFS, FT logging performance gains
UDP and intra-host VM to VM performance improvements
vDS scaling to ~350 hosts/vDS (from current 64 hosts/vDS)—final number is TBD!
LBT (Load Based Teaming)
Avoid congestion by dynamic adjustment to NIC team based upon pNIC load
IPv6—NIST Compliance
Compliance with NIST “Host” Profile
Storage
Two additional minor new ones are 1) support of iSCSI offloads with Broadcom offload cards and 2) Support for 8Gb HBAs.