PowerMax and VMAX All Flash Solutions Design (Open Replicator Concepts) Flashcards
What is Open Replicator Software (ORS)?
tool that can be used to migrate from legacy Dell EMC and certain third party storage array to VMAX/PowerMax
How does ORS function?
controlled from a local host that is attached to the new array
What are the main benefits of ORS?
enables host applications to remain operational during copy procedure
data copying part of storage system and doesn’t impact host resources
uses SAN/WAN to make full copies so no LAN/server impact
What is the Control in terms of ORS?
recipient array and its devices called the control side of the copy operation
What is the Remote in terms of ORS?
donor array
What is Hot in terms of ORS?
control device is read/write online to the host while the copy is in progress
What is Cold in terms of ORS?
the control device is not ready (offline) to the host while the copy operation is in progress
recommended by Dell to guarantee the device cannot change during the copy process
What is Pull in terms of ORS?
operation that copies data to the control device from the remote device
How is ORS initiated?
Through Unisphere or SE
What are important considerations about Control Devices?
can be larger than remote devices
cannot be involved in TimeFinder session
can be used as an R1 in an SRDF configuration if array is running PowerMaxOS
What are important considerations about Remote Devices?
passive and does not require software
should not be modified or ready by any host during transfer
What is a default setting for ORS?
Background Copy - can be turned off
What is Donor Update in terms of ORS?
protects against potential data loss due to a SAN failure or connectivity issue
causes all writes to the control device from the host to be immediately copied to the remote device
What is Ceiling Value in terms of ORS?
optimizes the performance of the SAN environment
sets the maximum allowed bandwidth percentage ORS can take for a given director, port, or all directors/ports
What is Session Pace in terms of ORS?
sets the pace of the replication process
values range from 0-9 (0 fastest, 9 slowest)
default is 5
