EMC VNX Virtual
Provisioning provides pool-based storage provisioning by implementing pool LUNs
that can be either thin or thick. Thin LUNs provide on-demand storage that
maximizes the utilization of your storage by allocating storage as it is
needed. Thick LUNs provide high and predictable performance for your
applications mainly because all of the user capacity is reserved and allocated
upon creation. Both types of LUNs benefit from the ease-of-use features of
pool-based provisioning. Pools and pool LUNs are also the building blocks for
advanced data services such as Fully Automated Storage Tiering for Virtual
Pools (FAST™ VP), Compression, and Deduplication. Virtual Provisioning enables
organizations to reduce storage costs by increasing capacity utilization,
simplifying storage management, and reducing application downtime. Virtual
Provisioning also helps companies to reduce power and cooling requirements and
reduce capital expenditures.
Now that we understand the
general idea behind EMC VNX Virtual Provisioning lets go over some of the
highlighted points and improvements discussed at EMC World 2014.
All compressed and deduplicated LUNs are thin
provisioned by default.
Pool LUN Metadata
Latest performance numbers
Default for VNX 2nd series LUN
creation is thin.
Thin LUN metadata automatically moves to the
highest tier of the pool unless the tiering policy pins the LUN to a specific
Thin LUNs only.
Returns unused space to the Pool upon deletion.
Currently support is Windows 2012 NTFS, ESXi
5.x, Veritas Storage Foundation.
Replication and Migration
Thin to thin
Thin attributes are maintained by all
Replicator, RecoverPoint, MirrorView, SAN Copy,
SnapView Clones, PowerPath Migration Enabler.
Thick to thin
RecoverPoint, remote SAN Copy pull, PowerPath
Migration Enabler maintain thin attributes of the target.
Thick to thin replication is supported by all
products, but thin attribute of target may not be maintained in all cases.
Thin to thick
Remote SAN Copy pull