December 2017
Beginner
598 pages
14h 7m
English
Content preview from Mastering VMware vSphere 6.5
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Virtual Machine File System (VMFS) 6
vSphere 6.5 has also introduced a new filesystem, for block-based storage—vSphere VMFS 6. It adds new capabilities as compared to previous filesystems:
|
Feature |
VMFS-3 |
VMFS-5 |
VMFS-6 |
|
Supported ESXi versions |
All |
5.x and 6.x |
6.5 |
|
VMFS datastore up to 64 TB |
Yes (using extents) |
Yes |
Yes |
|
VMDK larger than 2 TB |
No |
Yes (vSphere >5.5) |
Yes |
|
Unified block size (1 MB) |
No |
Yes |
Yes |
|
Atomic Test and Set (ATS) enhancements (part of VAAI, locking mechanism) |
No |
Yes |
Yes |
|
Sub-blocks for space efficiency |
64 KB (max ~3k) |
8 KB (max ~30k) |
64 KB (dynamic) |
|
Small file support |
No |
1 KB |
1 KB |
|
Disk partitions type |
master boot record (MBR) |
GUID partition table ... |
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