Quantum DXi4500, Руководство пользователя

Страница: 144 / 226

Chapter 6: DXi4500 Status
System
122 Quantum DXi4500 User’s Guide
deleting this cached data is called truncation (see Space
Management on page 133).
Used (System Capacity)
Used space is the area that already holds data. The Used value is
displayed as an amount and as a percentage of the total capacity in the
system.
Used space is divided into the following categories:
Note: The value for each category is displayed as an amount and as a
percentage of the total capacity in the system.
• Deduplicated data - The amount of data that has already been
deduplicated.
• Data waiting to be deduplicated - The amount of data that is
waiting to be deduplicated.
• Data not intended for data deduplication - The amount of data
that will NOT be deduplicated.
• System metadata - The area on the system that is occupied by the
system metadata.
Data Reduction
The data reduction area displays the data reduction performance for the
system. Data reduction is divided into the following categories:
Note: Since these values are calculated as data is deduplicated and
compressed, they will not be completely up-to-date until all
data that is eligible for deduplication is processed by the data
deduplication and compression engines.
• Total Data Reduced - The original, native size of all existing data
that has been processed by the data deduplication and compression
engines.
• Data Deduplication Ratio - The deduplication ratio of all existing
data that has been processed by the data deduplication engine.