Virtualizing storage tiers (smart), About virtualizing storage tiers, Reclaiming zero pages – HP XP P9000 Command View Advanced Edition Software Licenses User Manual
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Related topics
• About virtualizing storage capacity
Reclaiming zero pages
Reclaiming unused zero pages for a THP/Smart pool releases unused capacity.
1.
On the Resources tab, select Storage Systems in the navigation tree.
2.
Expand the tree for the target storage system that includes the appropriate THP/Smart pool, and
select the THP/Smart pool in THP Pools.
3.
On the THP Vols tab, select one or more volumes and click Reclaim Zero Pages.
4.
Click Submit.
5.
In the task list, confirm that the task is completed.
Related topics
• About virtualizing storage capacity
Virtualizing storage tiers (Smart)
This module describes how to manage data relocation for Smart volumes.
About virtualizing storage tiers
Smart Tiers functionality lets you configure the monitoring frequency modes at which data is accessed
and relocate that data in a specific pool and tier based on the results.
For example, you might create a pool that combines volumes of different cost performances, such as
combining high-speed volumes (SSD, FMD, or SAS) with inexpensive low-speed volumes (SATA). The
data in this pool is then automatically relocated among the volumes. This relocation is performed
depending on the I/O load:
•
High-load pages are allocated to high-speed volumes
•
Low-load pages are allocated to low-speed volumes
By using HP StorageWorks P9000 Command View Advanced Edition Suite software, you can fine-tune
settings related to the monitoring of Smart pools and data relocation depending on operating
conditions.
You can configure a tiering policy in a Smart pool so that parity groups are assigned to specific tiers
(Tier 1, Tier 2, and Tier 3) to take advantage of drive types, drive speeds, chip types, and RAID levels
that can optimize your performance and capacity needs. Tiering allows data in a host volume to be
spread across multiple tiers (Tier 1 for high-speed, Tier 2 for next highest speed, and Tier 3 for
additional capacity independent of drive type or RAID Level). This provides the flexibility to specify
settings that address your business conditions or the characteristics of certain applications. Tiering
allows you to optimize data placement, improve volume performance, and reduce costs through more
effective use of your resources.
Smart settings that can be specified by using Command View AE Suite include:
User Guide
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