Netapp snapshot copy-on-write array

Do not install the Commvault software on the same volume that you are protecting with the IntelliSnap backup feature. NetApp storage arrays support LUNs from multiple NetApp storage arrays, if the subclients are on the same filer operating system.

Netapp snapshot copy-on-write array

An offline operation reads data from a source volume and copies it to a target volume. An online operation uses a snapshot volume as the source and copies its data to a target volume. This suspension occurs because the state of data on the target volume is inconsistent until the procedure is complete.

The offline and online Copy Volume operations are described below. Offline Copy Volume operation The offline Copy Volume relationship is between a source volume and a target volume.

An offline copy reads data from the source volume and copies it to a target volume, while suspending all updates to the source volume with the copy in progress.

All updates to the source netapp snapshot copy-on-write array are suspended to prevent chronological inconsistencies from being created on the target volume. The controller rejects the write request, and the read request might not be issued due to the rejected write request.

This condition might result in an error message appearing, which indicates that the source volume is write protected. Online Copy Volume operation The online Copy Volume relationship is between a snapshot volume and a target volume.

Snapshot management

You can initiate a Copy Volume operation while the source volume is online and available for data writes. This function is achieved by creating a snapshot of the volume and using the snapshot as the actual source volume for the copy.

When you initiate a Copy Volume operation for a source volume, System Manager creates a snapshot image of the base volume and a copy relationship between the snapshot image of the base volume and a target volume.

Using the snapshot image as the source volume allows the storage array to continue to write to the source volume while the copy is in progress. During an online copy operation, a performance impact is experienced due to the copy-on-write procedure.

netapp snapshot copy-on-write array

After the online copy completes, the base volume performance is restored. What you need to know about online copy operations What kind of volumes can be used?

netapp snapshot copy-on-write array

A target volume cannot be a thin volume or a base volume in a snapshot group. But you cannot use the Copy Volume function to copy data from a standard volume to a thin volume. When the copy is complete, the snapshot is disabled, and the base volume performance is restored.

Although the snapshot is disabled, the reserved capacity volume and copy relationship remain intact. The reserved capacity volume is used only to manage the snapshot image.The snapshots on the source array can be managed specifically for databases with NetApp Snapshot Manager for Oracle (SMO), or Snapshot Manager for SQL Server.

SMO connects to the database, and in the case of Oracle will put all tablespaces in hot backup mode before taking snapshots then take them out of hot backup mode when the snapshot is.

Parameters

The stop cgSnapVolume command stops the copy-on-write operation for creating a consistency group snapshot volume. Supported Arrays. This command applies to any individual storage array, including the E, E, E, and E arrays, as long as all SMcli packages are installed.

Copy-on-write (sometimes referred to as "COW") is an optimization strategy used in computer programming.

Data structures - What is copy-on-write? - Stack Overflow

The fundamental idea is that if multiple callers ask for resources which are initially indistinguishable, you can give them pointers to the same resource. Licenses for Copy-on-Write (COW) snapshot and Shadow Image. There is support for the fan-out configuration for the NetApp storage array.

The Commvault software does not support snapshot replication with NetApp FlexGroup volumes.

Your Answer

Backup Types. The snapshots on the source array can be managed specifically for databases with NetApp Snapshot Manager for Oracle (SMO), or Snapshot Manager for SQL Server.

SMO connects to the database, and in the case of Oracle will put all tablespaces in hot backup mode before taking snapshots then take them out of hot backup mode when the .

What a Snapshot copy is A Snapshot copy is a read-only image of a traditional or FlexVol volume, or an aggregate, that captures the state of the file system at a point in time. Data ONTAP maintains a configurable Snapshot copy schedule that creates and deletes .

Stop consistency group snapshot volume