RAID
Several fault tolerant configurations keep data available and servers running while drives are being
replaced - RAID levels that offer fault tolerance include:
RAID 50 (RAID 5+0)
protects against failure of one drive (and failure of particular multiple drives).
RAID 50 is a nested RAID method that uses RAID 0 striping across RAID 5 arrays. RAID 50 tolerates
one drive failure in each spanned array without loss of data. RAID 50 requires less rebuild time than
single RAID 5 arrays RAID 50 requires a minimum of six drives.
RAID 60 (RAID 6+0)
allows administrators to split the RAID 6 storage across multiple external
boxes. RAID 60 requires a minimum of eight drives. RAID 60 is a nested RAID method that uses RAID
0 block-level striping across multiple RAID 6 arrays with dual distributed parity. With the inclusion of
dual parity, RAID 60 will tolerate the failure of two disks in each spanned array without loss of data.
RAID 6 with ADG
: Allocates the equivalent of two parity drives across multiple drives and allows
simultaneous write operations Distributed Data Guarding (RAID 5): Allocates parity data across
multiple drives and allows simultaneous write operations. Drive Mirroring (RAID 1 and 1+0 Striped
Mirroring): Allocates half of the drive array to data and the other half to mirrored data, providing
two copies of every file.
Dual Domain (NEW)
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 external cable failure,
expander failure, failure in a spanned disk (JBOD) environments. Requires FW v 3.x
Common Slot Power
Supply
The D2000 Disk enclosures use the 460W Common Slot Power supply.
HP's Common Slot Power supplies meet multiple Energy Efficiency Initiatives:
460W, 92%: Climate Savers Computing Initiative GOLD and ECOS Consulting 80PLUS GOLD
NOTE:
The 80 PLUS program is a unique forum that unites electric utilities, the computer industry, and
consumers in an effort to bring energy efficient technology solutions to the marketplace. 80 Plus
independently tests power supply efficiency and publicly posts the results on 80Plus.org.
QuickSpecs
HP D2000 Disk Enclosures
D2000 Enclosure Components
DA - 13404 Worldwide — Version 39 — December 9, 2013
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