QuickSpecs

the primary site is back online, the replication can be reversed and when the data is
resynchronized, processing can be switched back to the primary site and business can continue.
In the past, if an e-mail system experienced a disaster it was an "oh well" moment. The loss of a
day or more of e-mail was not considered important. Today, e-mail is a critical component of many
companies' business plans and recovering e-mail after a disaster quickly and completely is
required.
Maintenance
HP Remote Snap software can also be used to solve other business needs. For instance, E-mail
servers may need periodic maintenance that can take hours to complete. With remote replication
in place, the downtime can be minimal (as long as it takes to bring the remote peer of the primary
e-mail server online). The primary server can be worked on (patches, hardware upgrades, etc.)
and then brought back online and into production. A whole datacenter can be failed over to a
remote site on purpose to perform maintenance on generators, air conditioning, etc. Replication
can also be used to perform a datacenter move with minimal downtime (fail everything to the DR
site, move the production datacenter to its new location then fail the DR site back to the new
datacenter).
Storage Based
Data replication is performed at the storage subsystem controller level and is totally transparent to
the host, alleviating unnecessary host cycles to perform the data mirroring functions. Unlike a
fabric based or host based solution, the storage based solution dedicates its resources to
managing the replication process between arrays, with minimal impact to applications, other data
or devices on the SAN.
Bi-Directional
The bidirectional HP P2000 Array solution addresses the growing need among businesses to
ensure continuous availability of applications that are critical to daily business operations. HP
P2000 enables two sites in a remote replication connection to use each other as a destination to
maintain replicated copies of online data. This maximizes resource utilization while enabling
business continuance, even in the event of disaster.
Disaster Tolerance
The P2000 G3 FC products utilize snapshot data online and in real time to a remote P2000 G3
through a local or extended storage area network (SAN). Additionally, data replication can be
bidirectional, meaning that a storage array can be both a source and a destination. A particular
LUN can be replicated in only one direction between the two storage arrays. Write I/O data sent to
the source is replicated by HP P2000 Array to the destination. A pair of properly configured HP
P2000 G3 FC arrays is a replication solution that guarantees data integrity in the event of a
storage system or site failure.
Normalization (first initial copy)
When a DR site is initially created a normalization or initial copy of the data from the source
volume to the target volume must occur. The P2000 G3 array allows this first copy to take place
locally. After completion the disks can me manually moved to the remote location. Subsequent
changes will only remotely copy the changed blocks.
SAN Extensions
HP P2000 G3 Array provides the capability to replicate data over direct Fibre Channel. The
distances supported over dark fiber are determined by the speed of the dark fiber connection and
the technology used to communicate over the dark fiber.
Path failover (MPIO) MPIO for Windows provides a single multi-path solution for HP P2000 G3 Modular Smart Array on
HP servers.
Support for Windows 2003 and Windows 2003 R2 operating systems is provided by HP MPIO Full
Featured DSM. For the P2000 G3 this version is 2.6.1.7 or greater.
Support for Microsoft Windows 2008 is bundled within the operating system
Support for Linux distributions is with Device Mapper 4.4.0 or greater.
Support for HPUX is native multipathing in HP-UX v3 and PV-Links in HP-UX v2.
QuickSpecs
HP MSA P2000 G3 Modular Smart Array System
Optional Software
DA - 13551 Worldwide QuickSpecs — Version 27 — 8.23.2012 Page 21