HP Serviceguard Metrocluster with EMC SRDF for Linux B.01.00.00

RDF-ECA (RDF Enginuity Consistency Assist) A Solutions Enabler feature to provide consistency protection

for SRDF/Synchronous devices. RDF-ECA is used for M by N Symmetrix configurations using

Metrocluster with EMC SRDF for Linux.

Recovery Cluster A cluster on which recovery of a package takes place following a failure on the cluster.

resynchronization The process of making the data between two sites consistent and current after the systems are

restored following a failure. Also called data resynchronization.

SRDF (Symmetrix Remote Data Facility) A level 1-3 protocol used for physical data replication between

EMC Symmetrix disk arrays.

Symmetrix device

number

The unique device number that identifies an EMC logical volume.

synchronous data

replication

Each data replication I/O waits for the preceding I/O to complete before beginning another

replication. Minimizes the chance of inconsistent or corrupt data in the event of a rolling disaster.

transparent

failover

A client application that automatically reconnects to a new server without the user taking any

action.

U-Z

volume group In LVM, a set of physical volumes such that logical volumes can be defined within the volume

group for user access. A volume group can be activated by only one node at a time. Serviceguard

can activate a volume group when it starts a package. A given disk can belong to only one

volume group. A logical volume can belong to only one volume group.

WAN data

replication

solutions

Data replication that functions over leased or switched lines.