The recipent array and its devices are referred to as the control side of the copy
operation.
Remote
The donor EMC arrays or third-party arrays on the SAN are referred to as the
remote array/devices.
Hot
The Control device is Read/Write online to the host while the copy operation is in
progress.
Hot push operations are not supported on arrays running HYPERMAX OS.
Cold
The Control device is Not Ready (offline) to the host while the copy operation is
in progress.
Pull
A pull operation copies data to the control device from the remote device(s).
Push
A push operation copies data from the control device to the remote device(s).
Pull operations
Arrays running HYPERMAX OS support up to 512 pull sessions.
For pull operations, the volume can be in a live state during the copy process. The
local hosts and applications can begin to access the data as soon as the session
begins, even before the data copy process has completed.
These features enable rapid and efficient restoration of remotely vaulted volumes and
migration from other storage platforms.
Copy on First Access ensures the appropriate data is available to a host operation
when it is needed. The following image shows an Open Replicator hot pull.
Figure 50
Open Replicator hot (or live) pull
STD
PS0 PS1 PS2 PS3 PS4 SMB0 SMB1
SB0
SB1
SB2
SB3
SB4
SB5
SB6
SB7
SB8
SB9
SB10
SB11
SB12
SB13
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SB15
PiT
Copy
PiT
Copy
STD
The pull can also be performed in cold mode to a static volume. The following image
shows an Open Replicator cold pull.
Data Migration
About Open Replicator 171
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