vSphere Storage - ESXi 5.1 - Documentation - VMware
vSphere Storage - ESXi 5.1 - Documentation - VMware
vSphere Storage - ESXi 5.1 - Documentation - VMware
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<strong>vSphere</strong> <strong>Storage</strong><br />
n Dynamically add a new extent. The datastore can span over up to 32 extents with the size of each extent<br />
of more than 2TB, yet appear as a single volume. The spanned VMFS datastore can use any or all of its<br />
extents at any time. It does not need to fill up a particular extent before using the next one.<br />
NOTE Datastores that only support hardware assisted locking, also called atomic test and set (ATS)<br />
mechanism cannot span over non-ATS devices. For more information, see “VMFS Locking<br />
Mechanisms,” on page 157.<br />
Increase VMFS Datastore Capacity in the <strong>vSphere</strong> Client<br />
When you need to create virtual machines on a datastore, or when the virtual machines running on a datastore<br />
require more space, you can dynamically increase the capacity of a VMFS datastore.<br />
Use one of the following methods to increase a VMFS datastore:<br />
n Add a new extent. An extent is a partition on a storage device. You can add up to 32 extents of the same<br />
storage type to an existing VMFS datastore. The spanned VMFS datastore can use any or all of its extents<br />
at any time. It does not need to fill up a particular extent before using the next one.<br />
n Grow an extent in an existing VMFS datastore, so that it fills the available adjacent capacity. Only extents<br />
with free space immediately after them are expandable.<br />
NOTE If a shared datastore has powered on virtual machines and becomes 100% full, you can increase the<br />
datastore's capacity only from the host with which the powered on virtual machines are registered.<br />
Prerequisites<br />
Required privilege: Host.Configuration.<strong>Storage</strong> Partition Configuration<br />
Procedure<br />
1 Log in to the <strong>vSphere</strong> Client and select a host from the Inventory panel.<br />
2 Click the Configuration tab and click <strong>Storage</strong>.<br />
3 From the Datastores view, select the datastore to increase and click Properties.<br />
4 Click Increase.<br />
5 Select a device from the list of storage devices and click Next.<br />
Option Description<br />
To add a new extent Select the device for which the Expandable column reads NO.<br />
To expand an existing extent Select the device for which the Expandable column reads YES<br />
6 Review the Current Disk Layout to see the available configurations and click Next.<br />
7 Select a configuration option from the bottom panel.<br />
Depending on the current layout of the disk and on your previous selections, the options you see might<br />
vary.<br />
Option Description<br />
Use free space to add new extent Adds the free space on this disk as a new extent.<br />
Use free space to expand existing<br />
extent<br />
Expands an existing extent to a required capacity.<br />
168 <strong>VMware</strong>, Inc.