Product guide

Virtual Provisioning overview 261
About Virtual Provisioning
Performance implications of Virtual Privisioning
The performance implications for the use of thin devices depends on the nature of the
workload and the state of the thin device. In a thin device implementation, there are
response time and throughput overheads that are incurred the first time a write is
performed on an unallocated region of a thin device. The back-end layout of the thin
device tends to be widely striped, typically spanning a much greater number of drives
than a regular device. This makes it easier to keep the workload balanced across
many physical spindles, which can improve performance for the random read and
write workloads.