As a result, they either institute RAID configurations that only tolerate a single drive failure or combine one of these schemes with a hot spare
. They are forced to make a trade-off between cost, storage capacity and reliability in the certain knowledge that, at some point, one or more drives will fail.
Support for RAID levels 1 and 5, hot swappable disk drives, global hot spares
and redundant, hot swappable power supplies and fans provides high data availability.
With a fully detachable design, PureMedia matrix switchers not only support automatic fail-over to a hot spare
power supply, but also allow quick and easy field replacement, eliminating downtime and risk of system failure.
Data is backed up using highly encrypted backups, and this data can be restored to the hot spare
unit in case of disaster.<p>To ensure scalability of the system, Provisioning Servers can be created at different geographic sites to issue certificates or keys on demand.
Newer storage devices also have high availability standard features such as multiple global hot spare
drives and robust power redundancy features, and present great value for the money in centralized systems.
The new series supports RAID 0, 1, 10, 5, 6, 5+ hot spare
, 6+ hot spare
, 10+ hot spare
, single-disk, JBOD, and the Global Hot Spare
allowing a spare drive to flexibly replace a failed drive on any RAID volume on the NAS for automatic RAID data rebuilding.
Downstream of the FC switches is a RAID system with RAID-5 and hot spare
capabilities and a net capacity of 1.5TB.