View physical disk map series#

This means that you can easily extend a LUN’s size while a virtual machine is running, and this has obvious benefits for services that are subject to a service level agreement. Management of a pass-through disk’s LUN is done using the physical storage tools, just like you would manage LUNs on a physical server or a SAN. There are also not-so-valid reasons for using pass-through disks, and these are often the reasons offered by engineers who have mistakenly gone down the path of favoring this type over superior virtual alternatives. There are valid reasons for using a pass-through disk. The pass-through disk is a LUN that is connected directly to the controller of a virtual machine, located in the settings of that virtual machine’s virtual hardware. The first of these is the pass-through disk, known to VMware customers as raw device mapping. There are three kinds of physical disks that you can attach to a virtual machine in Windows Server 2012 Hyper-V: Passthrough disks, iSCSI disks, or Fibre Channel disks. Others are virtual solutions that are designed to offer flexibility and enable the self-service trait that we associate with cloud computing. These types can offer support for legacy management mechanisms, but they cannot offer the flexibility benefits that we associate with virtualization. There are several kinds of disk that you can present to a virtual machine.

View physical disk map series#

We will talk you through the possible solutions you can use for virtual machine storage in this series of posts. This subject has become a talking point recently because of a recent incorrect KB article that was published by Microsoft.