– IOPS Limit: The maximum rate at which the volume processes the I/O operations in  IOPS, in case you set I/O throttling for the volume. Disabled means there is no IOPS  I/O throttling enabled for the volume. – Bandwidth Limit: The maximum rate at which the volume processes the I/O operations  in MBps, in case you set I/O throttling for the volume. Disabled means there is no  bandwidth I/O throttling enabled for the volume. – Encrypted: Whether the volume is encrypted. – FlashCopy Mappings: The number of existing FlashCopy relationships. For more  information, see Chapter 10, “Copy Services” on page 465. – Mirror sync rate: The ratio that determines how quickly the copies of the volume are  synchronized. It also affects the format process speed. Be default, this rate is set to 50;  0 means no synchronization occurs. – Cache mode: Whether the cache is enabled or disabled for this volume. – Cache state: Whether open I/O requests are in the cache that is not destaged to the  disks. – UDID (OpenVMS): The unit device identifiers (UDIDs) that are used by OpenVMS  hosts to access the volume. – Volume UID: The volume unique identifier. – I/O Group: The volume caching I/O group and the I/O groups that the host can use to  access the volume. – Preferred node: The ID of the preferred node for the volume. 2. To open the advanced view of a volume copy, select the main volume properties. Click the  wanted copy tab, as shown in Figure 8-53. Figure 8-53 Volume copy properties Chapter 8. Advanced host and volume administration  421 – Capacity: The capacity of the volume. If the volume is thin-provisioned or compressed,  this number is the virtual capacity.