Administrator Guide
Table Of Contents
- Dell EMC Storage Systems Administrator Guide for PowerStore and Unity XT metro node feature
- CLI Workspace and User Accounts
- Meta Volumes
- System Management
- Thin support in metro node
- Provisioning Storage
- Volume expansion
- Data migration
- About data migrations
- Migrating thin-capable storage
- About rebuilds
- One-time data migrations
- Batch migrations
- Prerequisites
- Creating a batch migration plan
- Checking a batch migration plan
- Modifying a batch migration file
- Starting a batch migration
- Pausing/resuming a batch migration (optional)
- Canceling a batch migration (optional)
- Monitoring a batch migration’s progress
- Viewing a batch migration’s status
- Committing a batch migration
- Cleaning a batch migration
- Removing batch migration records
- Configure the WAN Network
- Consistency Groups
- Performance and Monitoring
- Metro node with active-passive storage arrays
- Index
block-size 4K
cache-mode synchronous
capacity 20G
consistency-group -
expandable true
expandable-capacity 0B
expansion-method storage-volume
expansion-status -
health-indications []
health-state ok
locality local
operational-status ok
scsi-release-delay 0
service-status running
storage-tier -
supporting-device XtremIO_LUN_1
system-id XtremIO_LUN_1_vol
thin-capable true
thin-enabled enabled
volume-type virtual-volume
vpd-id VPD83T3:6000144000000010e03e55ee4c98c41f
NOTE: You can use wildcards to set multiple metro node virtual volumes to be enabled for thin provisioning, after a metro
node software upgrade.
/clusters/cluster-1/virtual-volumes/thick_1:
Name Value
-------------------------- ----------------------------------------
block-count 52428800
block-size 4K
cache-mode synchronous
capacity 200G
consistency-group -
expandable true
expandable-capacity 0B
expansion-method storage-volume
expansion-status -
health-indications []
health-state ok
locality local
operational-status ok
scsi-release-delay 0
service-status unexported
storage-tier -
supporting-device device_thick_1_c1
system-id thick_1
thin-capable false
thin-enabled unavailable
volume-type virtual-volume
vpd-id VPD83T3:6000144000000010e025d83c86ace201
Thin storage management
metro node uses some of the management capabilities of the thin-capable arrays in its back-end to detect and address the
storage exhaustion issues. It is not mandatory for an array that supports thin volumes to support the thin storage management
features. metro node can identify whether an array supports thin storage management features. Based on this discovery, metro
node sets the thin capable attribute of the virtual volume.
Handling storage exhaustion on thin volumes
A storage array can respond back to metro node with a storage exhaustion error on a write to a thin volume. The storage
administrators who continuously monitor storage pool capacity takes necessary actions to avoid any storage block exhaustion in
their datacenters.
There are mainly two types of storage block exhaustion errors that a storage array can notify. They are:
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Thin support in metro node