Promise Technology VTrak D5000 Series, Руководство по эксплуатации продукта

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I
ntroductIon
The VTrak D5000 Series offers an alternative approach to the storage management technology available in the
VTrak Fibre Channel storage. The VTrak D5000 uses storage pools and storage volumes, including the option
of using thin provisioning or full provisioning, while still ensuring data security with proven RAID redundancy.
Additionally, the VTrak D5000 features Snapshot, Clone and SSD Caching capability. These new features are
described in this introduction, along with a brief description of how to setup and use them on the VTrak D5000
system.
Thin Provisioning
The VTrak D5000 Series introduces
thin provisioning
to the VTrak line of storage network hardware. Thin
provisioning is a process used for management of a storage area network (SAN) where storage capacity for
a client devices is reserved and allocated on demand using a shared storage pool. The storage pool is made
up of physical hard disks arranged in a RAID (typically RAID5 or RAID6) and further organized as one or more
volumes. Thin provisioning allows the totally theoretical capacity of the contained volumes to exceed the physical
capacity of the hard disks that make up the storage pool. In contrast, full or ‘fat’ provisioning does not allow the
total capacity of the volumes in a shared pool to exceed the physical capacity of the disks in the pool. The VTrak
D5000 allows the administrator to create shared storage volumes using either thin provisioning or full provisioning.
Thin provisioning is used for flexible storage planning, greater control and optimization of storage utilization and
continuous storage provisioning. Rather than allocating storage space upfront, thin provisioning provides a SAN’s
connected devices with storage on demand, dynamically according to the workload.
With thin provisioning, a connected device can appear to have more than the actual storage capacity.
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Promise Technology Introduction