Dell Unity 300 Unity™ Family Configuring and managing LUNs
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- Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 1
Dell Unity™ Family Configuring and managing LUNs Version 5.x Part Number: H16814 April 2022 Rev. 05 - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 2
data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2016 - 2022 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 3
restrictions and limitations...12 Create a LUN move session...13 Cancel a LUN move session...13 Best practices for LUN move sessions...13 Troubleshooting LUN move session issues...14 Chapter 3: Configuring block thin clones 15 About thin clones...15 Thin clone terminology and hierarchy...15 Create - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 4
feature documentation or release notes, go to Unity Technical Documentation at: dell.com/unitydocs. Troubleshooting For information about products, software updates, licensing, and service, go to Support (registration required) at: dell.com/ support. After logging in, locate the appropriate product - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 5
1 Configuring LUNs and consistency groups Topics: • About LUN storage • Create a LUN • Change LUN or LUN thin clone properties • Delete a LUN • About iSCSI interfaces • Create a consistency group • Add a LUN to a consistency group • Change consistency group or consistency group thin clone properties - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 6
Each interface has a unique VLAN ID (checked locally for the port) and an IP address (checked locally for the storage system) for iSCSI connections and a World Wide Name (WWN) for FC connections. NOTE: Different physical network ports can have the same VLAN ID. The following table lists the - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 7
All-Flash 450F, 550F, and 650F systems ○ All-Flash pools and Hybrid Flash pools in Unity Hybrid 380, 480, 680, and 880 systems ● If you are creating a LUN in a hybrid pool, and either Data Reduction or both Data Reduction and Advanced Deduplication are - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 8
● If a LUN is in the process of being moved, you can view the status and change the move session's priority setting. If the move is completed, you can view the move status for up to three days after the operation completed. NOTE: A thin clone or a LUN that has a thin clone cannot be moved. 4. On the - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 9
network to continue functioning properly, ensure that you set the VLAN ID only when you have configured the network switch port to support VLAN tagging of multiple VLAN IDs. Create a consistency group Steps 1. Under Storage, select Block > Consistency Groups. 2. Select the Add icon. 3. Specify the - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 10
Change consistency group or consistency group thin clone properties Steps 1. Under Storage, select Block > Consistency Groups. 2. Select the relevant consistency group or thin clone, and then select the Edit icon. 3. On the General tab, change a consistency group or thin clone name and description. - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 11
If the Delete icon is not available, one or more of the LUNs in the consistency group currently has hosts attached. Remove access from the group LUNs and retry the deletion. a. Select the consistency group you want to delete. b. Ensure any currently attached hosts no longer need the LUNs in the - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 12
Move sessions • LUN move session restrictions and limitations • Create a LUN move session • Cancel a LUN move session • Best practices for LUN move sessions • Troubleshooting LUN move session issues About LUN Move sessions The LUN Move feature lets you move block storage resources: ● To a pool with - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 13
● Perform an expand or shrink operation on the source LUN. ● Start an NDU of the storage system. ● Start a recovery operation on the source LUN. ● Configure a LUN for replication. Create a LUN move session Prerequisites Be aware that a LUN move session cannot start if: ● A storage system NDU is in - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 14
2. Be aware that no manual cut over is required. Once the move operation starts, the system will occur during a LUN move operation, and how to resolve them. Table 2. LUN move troubleshooting information Issue Destination pool does not have sufficient space to start the move operation, or the - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 15
to work with real workloads and use all data services associated with production storage resources without interfering with production. clone restrictions The following restrictions apply to thin clones: ● Thin clones are not supported for snapshots of thick LUNs. ● When you create a thin clone, the - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 16
Source snapshot A snapshot of a LUN, consistency group, or VMFS datastore used as the source for thin clone create and refresh operations. Base LUN, base consistency group, base VMFS datastore The founding (production) LUN, LUN group, or VMFS datastore for a set of derivative snapshots and thin - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 17
For Thin Clone 3: ● The source snapshot is Snapshot 3. ● The base resource is LUN 1. ● The original parent resource is Thin Clone 2. Now, if Thin Clone 3 is refreshed to Snapshot 1: ● The source snapshot changes from Snapshot 3 to Snapshot 1. ● The base resource is still LUN 1. ● The original parent - Dell Unity 300 | Unity™ Family Configuring and managing LUNs - Page 18
optimization, and bug fixes. It is strongly recommended to disable base the base LUN's host access before this performing this operation. Steps 1. Locate the summary page for the source storage resource whose thin clone you want to refresh. 2. Select the relevant thin clone, and then select More
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Dell Unity™ Family
Configuring and managing LUNs
Version 5.x
Part Number: H16814
April 2022
Rev. 05