IBM DS8880 Series Introduction And Planning Manual page 77

Write command for reading and writing the volume's metadata within a
single operation. With the Compare and Write command, the storage
system provides a faster mechanism that is displayed to the volume as an
atomic action that does not require locking the entire volume.
The Compare and Write command is supported on all open systems fixed
block volumes, including Metro Mirror and Global Mirror primary
volumes and FlashCopy source and target volumes.
XCOPY or Full Copy
The XCOPY (or extended copy) command copies multiple files from one
directory to another or across a network.
Full Copy copies data from one storage array to another without writing to
the VMware ESX Server (VMware vStorage API).
The following restrictions apply to XCOPY:
v XCOPY is not supported on Extent Space Efficient (ESE) volumes
v XCOPY is not supported on volumes greater than 2 TB
v The target of an XCOPY cannot be a Metro Mirror or Global Mirror
primary volume
v The Copy Services license is required
Block Zero (Write Same)
The SCSI Write Same command is supported on all volumes. This
command efficiently writes each block, faster than standard SCSI write
commands, and is optimized for network bandwidth usage.
IBM vCenter plug-in for ESX 4.x
The IBM vCenter plug-in for ESX 4.x provides support for the VAAI
interfaces on ESX 4.x.
For information on how to attach a VMware ESX Server host to a DS8880
with Fibre Channel adapters, see IBM DS8000 series online product
documentation ( http://www.ibm.com/support/knowledgecenter/
ST5GLJ_8.1.0/com.ibm.storage.ssic.help.doc/f2c_securitybp.html) and select
Attaching and configuring hosts > VMware ESX Server host attachment.
VMware vCenter Site Recovery Manager 5.0
VMware vCenter Site Recovery Manager (SRM) provides methods to
simplify and automate disaster recovery processes. IBM Site Replication
Adapter (SRA) communicates between SRM and the storage replication
interface. SRA support for SRM 5.0 includes the new features for planned
migration, reprotection, and failback. The supported Copy Services are
Metro Mirror, Global Mirror, Metro-Global Mirror, and FlashCopy.
The IBM Storage Management Console plug-in enables VMware administrators to
manage their systems from within the VMware management environment. This
plug-in provides an integrated view of IBM storage to VMware virtualize
datastores that are required by VMware administrators. For information, see the
IBM Storage Management Console for VMware vCenter (http://www.ibm.com/
support/knowledgecenter/en/STAV45/hsg/hsg_vcplugin_kcwelcome_sonas.html)
online documentation.
Chapter 3. Data management features
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