1. Auto Deploy feature which will manage ESXi installation and up-gradation. Deploy and patch vSphere hosts in minutes using a new “on the fly” model.
2. New high-availability features of vSphere .
3. Run vCenter Server as a Linux-based appliance.
4. Storage Distributed Resource Scheduling (or Storage DRS) moves VM disk format files between RAID or Storage arrays depending upon resource availability.
5. The 2TB LUN limit in vSphere has been increased to 16TB in vSphere 5.
6. Single vSphere Client user interface for configuring hardware and software iSCSI adapters along with the network configurations and port binding.
7. vStorage APIs for Array Integration (VAAI) has been enhanced to reclaim blocks when a virtual disk is deleted, unlike previously where the storage array is not aware about deleted blocks contains data after deleting virtual disks.
8. VMs having active snapshot can now be moved to another data store, unlike in vSphere 4.
9. 3D graphics for Windows Aero
10. Support for USB 3.0 devices
11. Non-disruptive upgrade from VMFS-3 to VMFS-5
12. Support for Apple Xserve servers running OS X 10.6 as a guest OS
13. Profile-driven storage
14. Run and manage vSphere from any web browser
15. vSphere Storage Appliance (VSA) runs as a virtual machine on vSphere that can be used as Shared Storage solution
16. Migration of VMs over higher-latency networks
17. New service-oriented and stateless firewall
18. 1TB of RAM and 32 vCPU
19. VMFS-5
When you format directly your Datastores with VMFS-5 you’ll benefit of:
o Unified 1MB File Block Size - Previous versions of VMFS used 1,2,4 or 8MB file blocks. These larger blocks were needed to create large files (>256GB). These large blocks are no longer needed for large files on VMFS-5. Very large files can now be created on VMFS-5 using 1MB file blocks.
o Large Single Extent Volumes - In previous versions of VMFS, the largest single extent was 2TB. With VMFS-5, this limit has been increased to ~ 60TB.
o Smaller Sub-Block - VMFS-5 introduces a smaller sub-block. This is now 8KB rather than the 64KB we had in previous versions. Now small files < 8KB (but > 1KB) in size will only consume 8KB rather than 64KB. This will reduce the amount of disk space being stranded by small files.
o Small File Support – VMFS-5 introduces support for very small files. For files less than or equal to 1KB, VMFS-5 uses the file descriptor location in the metadata for storage rather than file blocks. When they grow above 1KB, these files will then start to use the new 8KB sub blocks. This will again reduce the amount of disk space being stranded by very small files.
o Increased File Count – VMFS-5 introduces support for greater than 100,000 files, a three-fold increase on the number of files supported on VMFS-3, which were ~ 30,000.
o ATS Enhancement. This Hardware Acceleration primitive, Atomic Test & Set (ATS), is now used throughout VMFS-5 for file locking. ATS is part of the VAAI (vSphere Storage APIs for Array Integration). Atomic Test and Set (ATS) also known as Hardware Assisted Locking: a mechanism to modify a disk sector to improve the performance of ESX updating metadata. This enhancement improves the file locking performance over previous versions of VMFS.
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