If the physical capacity of the copy destination volume is insufficient, you cannot access the copy destination volume. This status makes it impossible to read data from the copy destination volume and write data into the copy destination volume. As for SnapOPC+, read/write is not allowed not only on the copy destination volume, but also on earlier generation's copy destination volumes.
For this reason, you must monitor so that a capacity shortage of the physical space in the copy destination volume does not occur during operation.
Monitoring When Using TPV/FTV as Copy Destination Volume
The physical space on the TPV/FTV is assigned per block. This may require more physical space than estimated. To prevent a capacity shortage of the physical space in the copy destination volume, use Storage Cruiser to change the settings of capacity threshold as required and monitor the usage.
Refer to "Thin Provisioning Management" in the Storage Cruiser Operation Guide for details about TPV monitoring.
Refer to "Automated Storage Tiering Management" in the Storage Cruiser Operation Guide for details about FTV monitoring.
Monitoring When Using SDV as Copy Destination Volume
Execute the acsdv poolstat command periodically to monitor whether a capacity shortage of the space in the SDP occurs.
In the SDP area, if any area exceeding 50 % of usage exists regardless of encryption, consider increasing SDPVs. Also, increase the frequency of monitoring the SDP.
In the SDP area, if any area exceeding 70 % of usage exists regardless of encryption, increase SDPVs immediately.
