HP ProLiant DL380G5-WSS 3.7.0 HP StorageWorks HP Scalable NAS File Serving Sof - Page 215
Verify available storage, Snapshot procedure, Create Snapshot
View all HP ProLiant DL380G5-WSS manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 215 highlights
Snapshots can be both readable and writable and there can often be multiple snapshots of a filesystem existing at the same time. A snapclone is similar to a snapshot, except that it completely copies the source filesystem data at a particular point in time. When you create a snapshot, you can specify whether you want a fully-allocated snapshot, a demand-allocated snapshot, or a complete-copy snapclone. NOTE: Snapclones are not supported on Engenio storage arrays. Verify available storage Be sure to have enough snapshot storage available for the snapshots you plan to take. If there is not adequate storage, nodes may shut down and manual repairs and reboots will be necessary to correct the problem. Also, if an out-of-snapshot-storage condition occurs, do not create any new snapshots until the condition is corrected. Snapshot procedure To create a snapshot, select the filesystem on the Management Console, right-click, and select Create Snapshot. (The filesystem must be mounted.) You will then see a dialog asking for information specific to your storage array. The dialog describes the information that you will need to enter. When you complete the information and click OK, HP Scalable NAS takes these steps: • Quiesces the filesystem to ensure that the snapshot can be mounted cleanly. • Performs the snapshot operation using the snapshot capability provided by the array. HP Scalable NAS uses the next available LUNs for the snapshot. • Resumes normal filesystem activity. • Imports the LUNs used for the snapshot into the cluster. The import can take sev- eral moments. When the snapshot is complete, you will be asked whether you want to mount the snapshot. If you choose to do this, the Mount Filesystem window will be displayed. (For information about the mount options, see Mount a filesystem, page 132.) Snapshots appear on the Management Console beneath the entry for the filesystem, while snapclones appear as a separate filesystem. Each snapshot or snapclone is assigned a HP Scalable NAS psd or psv device name. HP Scalable NAS File Serving Software administration guide 215