Filter
Top Products
4
4-4
EMC Fibre Channel Storage System Model FC4700 Configuration Planning Guide
About SnapView Snapshot Copy Software
Sample Snapshot Session
The following figure shows how a sample snapshot session starts,
runs, and stops.
Figure 4-2 How a Snapshot Session Starts, Runs, and Stops
EMC1823
Production
Host
Second
Host
Source
LUN
SnapshotSnapshot
cache
1. Before session starts
Source
LUN
SnapshotCache
Production
Host
Second
Host
2. At session start (2:00 p.m.)
Source
LUN
SnapshotCache
Production
Host
Second
Host
5. At session end (4:25 p.m.)
4. At end of operation (4:15 p.m.)
Production
Host
Second
Host
Source
LUN
Snapshot
(pointers to
chunks)
Cache
3. At start of operation (2:02 p.m.)
Production
host
Second
host
Source
LUN
Snapshot
(pointers to
chunks)
Cache
Changed chunks
on source LUN
Unchanged chunks in
cache and snapshot
Unchanged chunks
on source LUN
Key: