Tune_Sys; Tune_Sd - HP 3PAR StoreServ 7200 2-node Administrator's Manual

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For tune_vv_rollback tasks, there are two phases:
CAUTION:
Phase 1—Performing the actual region moves.
Phase 2—Deleting the information stored in Phase 1 of the corresponding tune_vv task.
The number of steps in the phase is equal to the number of regions being moved.
For more information on System Tuner and the tunevv command see
Tuning" (page
For more information about the tunevv command, see
NOTE: The tunevv CLI command requires the HP 3PAR Dynamic Optimization Software license.

tune_sys

The tune_sys task type is used to track operations performed with the tunesys command.
The tune_sys task has three phases:
Phase 1—Analyze the system, detect any virtual volume capacity imbalance between nodes,
and rebalance the virtual volumes.
Phase 2—Detect any chunklet imbalance between physical disks associated with the same
node and rebalance the chunklets.
Phase 3—Analyze the system and perform a consistency check on LDs to verify they match
the characteristics of any CPG to which the LD belongs. Any LDs that do not match are modified
to match the characteristics of the CPG.
The tune_sys task output displays information about the tuning process including:
Summary of tunesys command parameters.
Physical disk analysis.
Internode balance analysis.
Intranode balance analysis.
For more information about the tunesys command, see
NOTE: A dirty disk is a disk with chunklets that are determined to be out of balance during the
analysis phase. A clean disk is a disk with balanced chunklets.
The tunesys command waits for chunklet cleaning between tuning operations in order to maximize
the amount of space available for the next tuning operation.

tune_sd

The tune_sd task type is used to track the movement of the LDs used for the volume's snapshot
space to the specified CPG. Changing the layout of a virtual volume with the tunevv commands
requires the HP 3PAR Dynamic Optimization Software license.
For tune_sd tasks, there are three phases:
Phase 1—Storing away region move information for future restarts, rollbacks, or both.
Phase 2—Performing the actual region moves.
Phase 3—Deleting the information stored in Phase 1.
136 Managing Tasks
Rollback operations should not be performed on TPVVs.
173), and the HP 3PAR Command Line Interface Reference.
"Performance
"Performance Tuning" (page
"Performance Tuning" (page
173).
173).