However, many OS disks are partitioned with master boot record (MBR) by default and because of this are limited to 2 TiB. * 4 TiB is the maximum supported OS disk size for managed (persistent) disks. Maintenance of VM/VMSS using Live Migration Supported during VM creation and after VM is stop-deallocatedĭata on the OS disk is deleted, OS is reprovisionedįor Windows, page file is stored on the resource diskįor Windows, page file is stored on the OS disk (for both OS cache placement and Temp disk placement). VMs and scale set instances can be stop-deallocated and restarted from the stop-deallocated state OS disk data written to OS disk are stored in Azure Storageĭata written to OS disk is stored on local VM storage and isn't persisted to Azure Storage. VM sizes that support Premium storage such as DSv1, DSv2, DSv3, Esv3, Fs, FsV2, GS, M, Mdsv2, Bs, Dav4, Eav4 For the cache or temp size in GiB, see DS, ES, M, FS, and GS Key differences between persistent and ephemeral OS disks:Ĭache size or temp size for the VM size or 2040 GiB, whichever is smaller. Ephemeral OS disks are free, you incur no storage cost for OS disks.Lower latency, similar to a temporary disk.Ability to fast reset or reimage VMs and scale set instances to the original boot state.Supported by Marketplace, custom images, and by Azure Compute Gallery (formerly known as Shared Image Gallery).
With Ephemeral OS disk, you get lower read/write latency to the OS disk and faster VM reimage.
Ephemeral OS disks work well for stateless workloads, where applications are tolerant of individual VM failures but are more affected by VM deployment time or reimaging of individual VM instances.
#Normal disk graph windows windows
Applies to: ✔️ Linux VMs ✔️ Windows VMs ✔️ Flexible scale sets ✔️ Uniform scale setsĮphemeral OS disks are created on the local virtual machine (VM) storage and not saved to the remote Azure Storage.
0 kommentar(er)
