HP 3PAR StoreServ 7450 4-node HP 3PAR Web Service API 1.2 Developer's - Page 40
Volume policies Configuration Object, Volume Space Objects, Table 29 Volume, JSON Objects
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Volume policies Configuration Object The policies of a volume are specified by the policies JSON object, as detailed in Table 29 (page 40). Table 29 Volume policies JSON Objects Member staleSS Value Boolean Description true: Stale snapshots. If there is no space for a copy-on-write operation, the snapshot is allowed to go stale but the host write can proceed without an error. false: No stale snapshots. If there is no space for a copy-on-write operation, the host write will fail. oneHost Boolean true: This indicates a volume is constrained to export to one host or one host cluster. false: This indicates a volume exported to multiple hosts for use by a cluster-aware application, or when "port presents" VLUNs are used zeroDetect Boolean true: This indicates that the storage system will scan for zeros in the incoming write data. false: This indicates that the storage system will not scan for zeros in the incoming write data. system Boolean true: Special volume used by the system. false: Normal user volume caching Boolean This is a read-only policy and cannot be set. true: This indicates that the storage system is enabled for write caching, read caching, and read ahead for the volume false: This indicates that the storage system is disabled for write caching, read caching, and read ahead for the volume. Volume Space Objects The volume space is specified by the following three sub-objects, each of which uses the same members: • adminSpace • snapshotSpace • userSpace The members are listed in Table 30 (page 40). Table 30 Volume Space JSON Objects Member reservedMiB rawReservedMiB usedMiB freeMiB JSON Type number number number number API Type uint32 uint32 uint32 uint32 Description Reserved space in MiB. Raw reserved space in MiB. Used space in MiB. Free space in MiB. 40 Working with Storage Volumes