IBM XIV User Manual

Chapter 6. Consistency Group Management
The following sections describe the XIV Command Line Interface (XCLI) for
Consistency Group management. Other commands that are relevant to this topic
are: Snapshotting a Consistency Group, Moving a Volume between Storage Pools ,
Moving Consistency Groups between Storage Pools or or Grouped Pools.
v Volume Management
v Volume Snapshot Management
v Storage Pool Management
The sections are listed as follows:
v cg_add_vol(Adds a volume to a Consistency Group.)
v cg_create(Creates a Consistency Group.)
v cg_delete(Deletes a Consistency Group.)
v cg_list(Lists Consistency Groups.)
v cg_remove_vol(Removes a volume from a Consistency Group. )
v cg_rename(Renames Consistency Groups.)
v io_pause(Suspend IO execution on CG)
v io_resume(Resume IO execution on CG previously suspended with resume_io)
v io_pause_list(List CGs io_pause state)
v xcg_create(Creates a Cross-system Consistency Group (XCG) definition.)
v xcg_add_cg(Associates an existing Consistency Group to a Cross-system
Consistency Group definition.)
v xcg_remove_cg(Removes an existing Consistency Group from a Cross-system
Consistency Group definition.)
v xcg_add_remote_system(Adds a remote system name to the Cross-system
Consistency Group definition.)
v xcg_remove_remote_system(Removes a remote system name from a
Cross-system Consistency Group definition.)
v xcg_get_local_cgs(Lists Cross-system Consistency Group definitions along with
contained Consistency Groups.)
v xcg_get_remote_systems(Retrieve the names of remote systems part of the
specified Cross-system Consistency Group.)
v xcg_delete(Deletes a Cross-system Consistency Group (XCG) definition.)
v xcg_list(Lists Cross-system Consistency Group definitions along with contained
Consistency Groups.)
The following commands are no longer in use:
v cg_restore (The command has been replaced by the snap_group_restore
command)
Adding a Volume to a Consistency Group
Adds a volume to a Consistency Group.
cg_add_vol cg=cgName vol=VolName
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IBM XIV Specifications

General

Power Supply	Redundant power supplies
Drive Type	SATA
Redundancy	Fully redundant components
Connectivity	Fibre Channel, iSCSI
Form Factor	Rack-mounted
Cache	Distributed cache across modules
Data Protection	Snapshots, remote mirroring
Performance	High throughput and low latency
Scalability	Modular, scale-out architecture
Cooling	Redundant cooling
Architecture	Grid-based, distributed architecture