Exacq exacqVision Virtual User Manual - Manual (Page 24)

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Page 24 of 44
4/12/2013
Working with Logical Volumes
VMware has a hard limit of 2TB minus 512 bytes. Disk space can be added to the server by mounting individual disk drives up to the
2TB limit. As you expand your system, or decide to deploy an EVA that requires a large amount of disk space, it might be easier to
create a LVM combining multiple 2TB virtual disks. Your physical storage should be protected by a RAID level, so there is no need to
create a RAID group with the defined LVM, as this would decrease performance . When you deploy a LVM, it is important that all of
the LVM disks are from the same VMware-defined datastore.
1. Right-click the EVA and click Add … . Choose Hard Disk and then click Next.
2. On the Select a Disk screen, click Next to create a new virtual disk.
3. On the Create a Disk screen, specify the new disk size (up to 2TB). Exacq recommends provisioning the drive as Thick
Provision Eager Zeroed.
NOTE: Depending on the size of the new disk, this process could require an extended period of time and might
negatively affect the performance of a host. Thin provisioning is not a good choice, as the drive will quickly become
full of recorded data. You can choose to keep the new drive with the virtual machine, or you cay choose any available
datastore presented to the host. Note that video traffic creates a significant load on disk writes, so you will need to
monitor your data store to ensure acceptable performance. Also, make sure your network is appropriate for managing
the increase data streams.