Cisco UCS Invicta C3124SA Appliance Administration and Configuration Guide, v. 5.0.0

The LUNs List

The list of LUNs has check boxes adjacent to them. These check boxes can be used for selecting an unlimited number of LUNs for deletion.

Check boxes can also be used for selecting and viewing the performance of up to the first 5 selected LUNs. All columns are sortable.

Create LUN

To create a LUN:

Step 1 Choose LUN Configuration > LUNs.

The LUNs window appears.

Step 2 Click Create LUN.

The Create New LUN dialog box appears.

Step 3 Complete the Create New LUN fields:

• Enter a name in the LUN Name field.
• Enter the size of the LUN presented to the operating system (expressed in gigabytes).
• Volume Group displays the free space on your array.

Step 4 Click Create LUN or click Cancel to close the dialog box without creating a new LUN.

Increase LUN Size

Note If a LUN is part of an Asynchronous Replication pairing, its size cannot be increased (see Chapter 5, “Asynchronous Replication”).

Step 1 Choose LUN Configuration > LUNs.

The LUN window appears.

Step 2 Highlight a LUN from the LUNs list by mousing over it and right click.

The right-click menu appears.

Step 3 Choose the Increase Size (GB) menu option.

Increase Size dialog box appears.

Step 4 Enter the new size into the Increase (GB) field.

Note LUN size can only be increased, not decreased.

Step 5 Click Update LUN or click Cancel and return to the LUNs list.

Create Snapshots

The Snapshot feature provides the ability to create virtual images of a LUN at a particular instant and does so without causing a service interruption.

Snapshot characteristics:

• LUN Snapshots are differentiated in the LUN list when the LUN’s “Origin” and “Snap%” columns are populated.
• Snapshots can be created either manually or on a schedule. A maximum of 10 snapshots is allowed per LUN.
• When a Snapshot is created, its initial size is automatically calculated based upon the size of the Origin volume.
• Snapshots are automatically resized based upon the number of changes to the Origin volume and the amount of free space left on the Origin volume.
• Snapshots can be mounted for read/write purposes.
• One or more Snapshots can be deleted manually.
• When available free space on the system falls below a threshold level of 10%, the system automatically deletes the oldest Snapshot(s) on the device to free up at least 15% of space. Neither manual nor scheduled Snapshots can be created until this 15% threshold is met.
• A LUN Snapshot can be merged (only) with its Origin volume, one Snapshot at a time, without concern about the order in which the Snapshots were created.
• Snapshot performance can be checked.
• When a Snapshot merge is in progress for an Origin LUN, neither manual nor scheduled Snapshots can be created until the merge is complete.

Note You should regularly monitor the growth of the Snapshot and the amount of disk space available on the device.

To create a snapshot, do the following:

Step 1 Choose LUN Configuration > LUNs.

The LUNs window appears.

Step 2 Highlight a LUN from the LUNs list by mousing over it and right click.

The right-click menu appears.

Step 3 Choose Create Snapshot.

The Create LUN Snapshot dialog box appears.

Step 4 Enter the snapshot name and size, noting the available space.

Step 5 Click Create Snapshot or click Cancel to return to the LUNs window.

Schedule Snapshot

Step 1 Choose LUN Configuration > LUNs.

The LUNs window appears.

Step 2 Mouse over a LUN to highlight it and right click.

The right-click menu appears.

Step 3 Choose Schedule Snapshot.

The Snapshot Schedule Setup dialog box appears.

Step 4 Do one or both of the following:

Note Entries with “occurs every” interval set to “off” on the drop-down list are ignored.

• Click New Schedule Entry one or more times to schedule one-time or recurring Snapshots.

– Enter the Snapshot start time (24-hour clock) or use the Hour and Minute slide bar to choose a time.

– Choose a time interval, day of the week or calendar date from the Occurs Every drop-down list
.

• Click Delete for any scheduled entry you want to remove.

Step 5 Click Save Schedule to save the LUN Snapshot schedule.

Merge Snapshot

When a Snapshot is merged, the data on the Snapshot replaces the data on the Origin volume. When the merge is complete, the merged snapshot is automatically deleted from the system.

Note Before merging a LUN Snapshot with its Origin, make sure that both the Origin LUN and the Snapshot are closed.

Note When a Snapshot merge is in progress for an Origin LUN, neither manual nor scheduled Snapshots can be created until the merge is complete.

Step 1 Choose LUN Configuration > LUNs.

The LUNs window appears.

Step 2 Mouse over a LUN snapshot to highlight it and right click.

The right-click menu appears.

Step 3 From the right-click menu, choose Merge Snapshot.

The Merge Snapshot confirmation dialog box appears.

Step 4 Choose Merge to complete the Snapshot merge or choose Cancel to return to the LUNs window.

Delete Snapshot

When the maximum number of Snapshots, 10, has been created either manually or automatically via schedule, the oldest Snapshot, identified by the time created, is deleted. However, any Snapshot can be manually deleted.

Step 1 Choose LUN Configuration > LUNs.

The LUNs window appears.

Step 2 Mouse over a LUN snapshot to highlight it and right click.

The right-click menu appears.

Step 3 From the right-click menu, choose Delete.

The Delete Snapshot confirmation dialog box appears.

Step 4 Choose Delete or choose Cancel to return to the LUNs window.

Note You must delete all associated snapshots before a LUN can be deleted.

Check Performance

The LUNs window appears.

Step 2 Mouse over a LUN or LUN snapshot to highlight it and right click.

The right-click menu appears.

Step 3 From the right-click menu, choose Check Performance.

The LUN Performance Information Monitor appears.

Step 4 Mouse over a performance grid to view detailed information.

Step 5 Do any of the following:

• To view daily performance, click the i icon in the top-right-hand corner of the performance graph.
  
• To view weekly performance, click the calendar icon in the top-right-hand corner of the performance graph.
  
• To view details of a particular time frame, click your mouse and drag it over a lower time-line interval, e.g., 17:25 to 17:50.

Delete LUN

Note If a LUN is part of an asynchronous replication pairing, it cannot be deleted until the pairing is removed. To remove the pairing, go to the Async Replication > Pairings menu (see Chapter 5, “Asynchronous Replication”).

Note You must delete all associated snapshots before a LUN can be deleted.

Tip During the LUN deletion process, GUI performance may be negatively affected until the process completes. The larger the LUN, the more time the process may take. We recommend deleting larger LUNs during off-peak hours.

To perform the LUN deletion:

Step 1 Choose LUN Configuration > LUNs.

The LUN window appears.

Step 2 Highlight a LUN from the LUNs list by mousing over it and right click.

The right-click menu appears

Step 3 Choose the Delete menu option.
A delete confirmation dialog box appears.

Step 4 Click Delete or click Cancel and return to the LUNs list.

View LUN Performance Data

Check boxes adjacent to the LUNs can be used for selecting and viewing the performance of up to the first 5 Selected LUNs. View performance graphs for one of the first 5 LUNs on its tab, or view an aggregate graph from the “All” tab.

The performance view auto-refreshes every 10 seconds and displays point-in-time MB/s and IOPS characteristic information.

To View LUN performance graphs, do the following:

Step 1 Choose LUN Configuration > LUNs.

The LUN window appears.

Step 2 Do one of the following:

• Highlight a LUN from the LUNs list by mousing over it and right click.
• Choose up to 5 check boxes adjacent to a LUN name and right click.

The right-click menu appears.

Step 3 Choose Check Performance.

The LUN Performance Information Monitor appears.

Step 4 Mouse over a performance grid to view detailed information.

Step 5 Do any of the following:

• To view daily performance, click the i icon in the top-right-hand corner of the performance graph.
  
• To view weekly performance, click the calendar icon in the top-right-hand corner of the performance graph.
  
• To view details of a particular time frame by click your mouse and drag it over a lower time-line interval, e.g., 17:25 to 17:50.

Initiator Groups

Initiator Groups are used to map LUNs. When a LUN is associated with a specific Initiator Group, the LUN is only visible to Initiators in that Group. A triangle adjacent to an Initiator Group name indicates that there are Initiators assigned to them and a tree structure can be expanded or collapsed on click.

Note A LUN may be mapped to multiple Initiator Groups while an Initiator cannot be listed as a member of more than one Initiator Group.

Create an Initiator Group

Step 1 Choose LUN Configuration > Initiator Groups.

The Initiators window appears.

Step 2 Click Create New Group.

Step 3 Enter the name of the Initiator Group in the Name field and click Create Group.

The new Initiator Group name appears on the Initiators list.

Add an Initiator to an Initiator Group

Step 1 Choose LUN Configuration > Initiator Groups.

The Initiators window appears.

Step 2 Click an Initiator Group to highlight it and right click.

The right-click options menu appears.

Step 3 Choose Add Initiator.

The Add Initiator to <Initiator Group> dialog box appears.

Step 4 Enter in the WWN/IQN and click Create Initiator or click Cancel to return to the Initiators list.

Note Ensure that the WWN for the HBA to which the storage is attached is zoned using the standards used in your data center.

Map a LUN to an Initiator Group

Step 1 Choose LUN Configuration > Initiator Groups.

The Initiators window appears.

Step 2 Click an Initiator Group to highlight it and right click.

The right-click menu appears.

Step 3 Choose Map LUNs.

The Initiator LUN window appears.

Step 4 Do one of the following to map a LUN:

• Drag-and-drop a LUN from the Available LUNs list to the Initiator Group’s LUN list above it.
• Right click a LUN and Choose the Map/Unmap LUN option.

The Map LUN to Initiator Group Dialog Box appears.

Note If a range of IDs for multiple LUNs is specified, a check for Map ID ‘0’ is first made and then the IDs are assigned starting with the ID provided. If the number provided is already present, the starting Map ID assigned will be incremental.

Note Map IDs from 0-255 are available for UNIX and Linux.

Note Map IDs 0-254 are available for Windows.

Step 5 Click Create or click Cancel to return to the Initiator’s Available LUN list.

The LUN appears in the Initiator’s LUN list.

Step 6 Repeat Steps 4 and 5 for each preferred available LUN.

Note To unmap a LUN, drag-and-drop it from the Initiator Group LUN list back to the Available LUNS list or follow the UnMap procedure in Chapter 4.2.4.

Step 7 Click Back to Initiators to return to the Initiator Groups window.

Unmap LUN from Initiator

Step 1 Choose LUN Configuration > Initiator Groups.

The Initiators window appears.

Step 2 Click an Initiator Group to highlight it and right click.

The right-click menu appears.

Step 3 Choose Map/Unmap LUNs.

The Initiator LUN window appears.

Step 4 Do one of the following:

• Choose a LUN from the Initiator’s LUN list, right click and choose the Unmap LUN menu option.
• Drag-and-drop a LUN from the Initiator Groups LUN list to the Initiator Available LUN list below it.

The LUN disappears from the Initiator Group’s LUN list and reappears on the Available LUNs list.

Delete Initiator Group

Note Unmap all LUNs from an Initiator Group before attempting to delete it to avoid data loss.

Step 1 Choose LUN Configuration > Initiator Groups.

The Initiators window appears.

Step 2 Click an Initiator Group to highlight it and right click.

The right-click menu appears.

Step 3 Choose Delete Group.

A delete verification dialog box appears.

Step 4 Click Delete Group or click Cancel to return to the Initiators list.