10.7.19 Remote Copy configuration limits Table 10-10 lists the Metro Mirror and Global Mirror configuration limits. For more information about the configuration limits, search for “Configuration Limits and  Restrictions for IBM Storwize V5000” at this IBM Knowledge Center  web page. 550  Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.2.1 Parameter Value Number of Metro Mirror or Global Mirror  Consistency Groups per system 256  Number of Metro Mirror or Global Mirror  relationships per system 4096 Number of Metro Mirror or Global Mirror  relationships per Consistency Group No limit is imposed beyond the Remote Copy  relationships per system limit. Total volume size per I/O Group There is a per-I/O Group limit of 1024 terabytes (TB) on  the quantity of master and auxiliary volume address  spaces that can participate in Metro Mirror and Global  Mirror relationships. This maximum configuration uses all  512 MiB of bitmap space for the I/O Group and allows 10  MiB of space for all remaining copy services features. Total number of Global Mirror with  Change Volumes relationships per  system 256 Table 10-10 Metro Mirror configuration limits