Advanced Data Guarding (RAID 6): This is the highest level of fault tolerance. It allocates two sets of
parity data across drives and allows simultaneous write operations. This level of fault tolerance can
withstand two simultaneous drive failures without downtime or data loss.
Distributed Data Guarding (RAID 5): This allocates parity data across multiple drives and allows
simultaneous write operations.
Receive pre-failure alerts with HP SIM. When drives installed in D2000 disk enclosures are used in
conjunction with the P212, P411, P812, P222, P421, P822, P711m, P721m and the P731m Smart
Array Controller and Systems Insight Manager, the Smart Array firmware in HP hard drives enables
extensive fault prediction capabilities. If potential problems develop in one of the drives, the Smart
Array Controller, Systems Insight Manager and/or Smart hard disk drive lets you know in advance so
you can have the drive replaced, before it fails, under warranty.
Remove / replace/ add components when system is running without service disruption with hot Plug
drives, power and cooling
Redundant power and cooling provides increased reliability as failure of a power supply or fans
does not interrupt system functioning
Dual domain SAS creates redundant pathways from servers to storage devices. The redundant
paths created by these configurations reduce or eliminate single points of failure within the storage
network. This provides increased levels of high availability with redundant paths from the controller
to the drives. Dual domain SAS implementations make it possible to tolerate host bus adapter (HBA)
failure, external cable failure, expander failure, failure in a spanned disk (JBOD) environments.
QuickSpecs
HP D2000 Disk Enclosures
At a Glance
DA - 13404 Worldwide — Version 39 — December 9, 2013
Page 5
