Hewlett Packard Enterprise HPE XP7, User Manual, Page: 72 / 311

• Creating pairs.
• Restoring pairs.
• Deleting snapshot data and deleting pairs.
When you execute additional pair task operations above these limits, the tasks are processed in the order
requested.
More information
Calculating the number of Fast Snap pairs based on pair tables on page 64
Calculating Fast Snap pairs based on the snapshot estimated manageable capacity on page 64
Calculating Fast Snap pairs based on cache management devices on page 65
Calculating the number of cache management devices on page 66
Calculating the Fast Snap pair capacity for THP pools on page 66
Calculating and assigning pool capacity on page 69
External Storage and external volumes used as pool-VOLs on page 71
Pair operations when pairs are cascaded on page 72
Pair operations when pairs are not cascaded on page 83
Pair operations when a P-VOL is shared by multiple S-VOLs on page 84
Data recovery and backup differences between Fast Snap and Business Copy on page 85
Creating Fast Snap pairs using Remote Web Console on page 114
Restoring Fast Snap pairs on page 124
Resynchronizing Fast Snap pairs on page 127
Deleting Fast Snap pairs on page 129
Fast Snap cache management device requirements on page 68
Pair operations when pairs are cascaded
The following table explains pair operations according to the pair status. The status of pair B is SMPL.
Pair type Pair A
status
Operation for pair B
Pair with snapshot attribute Pair with clone
attribute Snapshot
/ clone
attribute
common
Create Split Resync Restore Create Split Delete
With the
snapshot
attribute COPY(PD
) N N N N N N YN
PAIR Y N N N Y N YN
PSUS Y N N N Y N YN
COPY(RS
) N N N N N N YN
COPY(RS
-R) N N N N N N YN
PSUE N N N N N N YN
Table Continued
72 Pair operations when pairs are cascaded