Hitachi VSP G400 System Administrator Guide

Note: The Thin Fr
ee and Thin Used capacities include both Thin and Snap.
Thin Used plus Thin Free equals Allocated to Pools.
■
Physical capacity allocated to le pools is indicated by medium blue in the File view
and by light blue in the Unied view.
■
File pool utilization is indicated by light blue in the File view and by medium blue in
the Unied view.
■
File over-commit capacity is represented by darkest gray in the outer ring of the File
view.
■
The subscribed capacity of all volumes, as a percentage, is represented by white in the
outermost ring in the Block and Unied views. If the white ring extends outside the
circle, it indicates oversubscription. Capacity subscription beyond the total available
capacity should not be an issue if your capacity utilization is well within the total
capacity.
■
Physical capacity, or total usable capacity across all parity groups, is represented by
dark blue in the outermost ring in the Block and Unied views.
If you notice the total pool capacity (light grey) and Thin used (light green) values getting
closer to total capacity, you may be running out of storage on one or more storage
systems and may need to add disks to increase storage capacity. Review the information
gauge for each storage system to identify which storage system needs additional
capacity. In addition, check disks for each storage system to determine if there is unused
capacity available for parity group creation.
The right side of the resource summary oers alternate views:
■
Protection: is the breakdown of data protection metrics including a representation of
types of protected, unprotected, and secondary capacity and gauge of the total
percentage of capacity protected.
■
Tier Breakdown: is a visualization of the amount of each tier that is allocated to
pools.
■
Savings: tab displays the following ratios:
●
Data Reduction: : The ratio of logical used capacity to the physical used capacity,
for all compression and deduplication technologies. It is calculated as follows:
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For disk-based compression = Capacity 1 / Capacity 2.
■
For controller-based compression = Capacity 3 / Capacity 4.
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Data reduction savings = Capacity 1 + Capacity 3 / Capacity 2 + Capacity 4.
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Capacity 1 = logical used capacity of a parity group.
■
Capacity 2 = physical used capacity of a parity group.
■
Capacity 3 = logical used capacity of a pool.
■
Capacity 4 = physical used capacity of a pool.
●
Capacity Eciency: : The ratio of Thin Free plus Thin Used to the physical used
capacity. Capacity eciency is only calculated for volumes on HDP and HDT pools.
■
If disk-based compression is in use, either alone or in combination with
controller-based compression, the physical used capacity is that resulting from
disk-based compression alone.
■
If only controller-based compression is in use, the physical used capacity is that
resulting from controller-based compression.
Dashboard
Chapter 1: System administration overview
System Administrator Guide for VSP Gx00 models and VSP Fx00 models 24

Hitachi VSP G400 Specifications

General

Brand	Hitachi
Model	VSP G400
Category	Storage
Language	English