QuickSpecs

Fault Recovery -- HP
Fault Recovery -- HPFault Recovery -- HP
Fault Recovery -- HP
Continuous Access EVA
Continuous Access EVAContinuous Access EVA
Continuous Access EVA
for Disaster Tolerance
for Disaster Tolerancefor Disaster Tolerance
for Disaster Tolerance
Applications
ApplicationsApplications
Applications
HP StorageWorks Continuous Access EVA remote copy functionality is available for use with the
EVA4100/6100/8100 arrays. For additional information about Continuous Access EVA visit:
http://h18006.www1.hp.com/storage/software.html
Continuous Access EVA is a controller-based application that performs real-time replication between HP
StorageWorks Enterprise Virtual Arrays. The solution is enhanced to perform remote replication, and
deliver high data availability and performance to users on Fibre Channel based campus, metro or
continental Storage Area Networks (SANs).
HP StorageWorks Disaster Tolerant Solution for mySAP Business Suite on EVA offers a business
continuance solution for SAP environments, where data integrity and value added functionality are high
priorities. Best practices for implementing remote mirroring of an SAP database as part of an overall data
protection strategy with SAP applications can be found at:
http://h71028.www7.hp.com/ERC/downloads/4AA1-5683ENW.pdf
High Availability/ Fault
High Availability/ FaultHigh Availability/ Fault
High Availability/ Fault
Tolerance/
Tolerance/Tolerance/
Tolerance/
Hot pluggable support
Hot pluggable supportHot pluggable support
Hot pluggable support
All EVA are configured with dual HSV controllers that operate in a redundant mode. Each controller has
redundant Fibre Channel (FC) host ports (2 for the EVA6100 and 4 for the EVA8100). Each EVA6100
controller has two FC device ports and the EVA8100 controller has four FC device ports. For the
EVA6100/8100 in the event of a path failure, the alternate paths to the controller can be utilized with the
use of multi-path software in the Operating System or in Secure Path software.
On the EVA6100 each port connects to a FC loop switch which in turn connects to one FC I/O module
on up to eight drive enclosures and to one port of up to 112 disk drives. On the EVA8100 each port
connects to a FC loop switch which in turn connects up to one FC I/O module on the drive enclosures
and to one port of up to 168 disk drives. With the four FC ports, each controller can connect to both
ports on up to 240 disk drives for redundant paths to all 240 drives.
EVA8100 configurations, with more than four drive enclosures, are configured with two pairs of FC-AL
switches connected between the two controllers and the drive enclosures. Up to nine drive enclosures can
be redundantly connected to each pair of switches, which are redundantly connected to each controller.
Each loop switch is independently powered and cooled. Should one loop switch fail, it can be replaced
while I/Os continue through the remaining redundant loop switch.
The HSV controllers also have dual redundant hot plug power supplies and dual redundant hot plug
blowers. Each controller has hot plug cache batteries to maintain cache contents for up to 96 hours in
case of a total power failure.
The M5314C FC drive enclosure has dual redundant hot plug FC I/O modules that allow the controllers
to distribute I/Os between the two modules and provides redundant paths should either FC I/O module
become unavailable. The enclosure also has dual redundant hot plug power supplies and dual hot plug
blowers. The enclosure also has a hot plug Environmental Monitoring Unit (EMU) to monitor and report
the condition of the power supplies and fans. The EMU can be replaced without affecting I/O operations.
The FC and FATA disk drives have dual FC ports which can be redundantly accessed by each controller.
The drives are hot plug. The EVA, as a virtualized array, always provides striping of the drives across the
entire disk group. The drives can then be arranged, using redundant Vraid1 or Vraid5 protection, so that
a drive failure will not cause loss of data. Optional distributed sparing (virtual sparing) can be configured
so that a drive failure will trigger an automatic rebuild of the Vraid1 or Vraid5 data set into spare space.
The EVA sparing protection will utilize available disk space in the disk group and when that is exhausted,
the established virtual spare space. This methodology of using unused capacity can give customers the
ability to have many disk worth of spare space for maximum data availability protection and peace of
mind.
QuickSpecs
HP StorageWorks 6100/8100 Enterprise Virtual Arrays
HP StorageWorks 6100/8100 Enterprise Virtual ArraysHP StorageWorks 6100/8100 Enterprise Virtual Arrays
HP StorageWorks 6100/8100 Enterprise Virtual Arrays
Product Highlights
DA - 12745 Worldwide — Version 11 — September 14, 2009 Page 15