Drive Groups Overview Page

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Lists the properties of each drive group that is defined on an Oracle FS System.

Drive Group Number

Displays the number that uniquely identifies the drive group.

Note: The primary drive group in a Storage Domain is indicated by this icon alternate image text

. The primary drive group contains system configuration information.

Drive Group Status

Indicates the operating condition of the drive group.

Status conditions include:

Normal: The drives are accessible and no action is required.
Degraded Warning: A drive has failed but this is not yet critical. This applies only to double parity.
Degraded Critical: Two or more drives have failed. The loss of one more drive causes a failure.
Failed: Multiple drives have failed. The drives are offline and data may be lost.

Media Type

Specifies the category of physical media that comprises the drive group.

Valid media types:

Performance SSD: Specifies that the data is stored on solid state drives (SSDs) that are optimized for the performance of balanced read and write operations.
Capacity SSD: Specifies that the data is stored on SSDs that are optimized for the performance of capacity and for read operations. The write performance for this Storage Class is sacrificed somewhat to achieve the optimizations for read performance and for capacity.
Performance Disk: Specifies that the data is stored on high-speed hard disk drives (HDDs). This Storage Class sacrifices some capacity to reduce the access time and the latency of the read operations and of the write operations.
Capacity Disk: Specifies that the data is stored on high-capacity, rotating HDDs. This Storage Class optimizes capacity at some sacrifice of speed. For a storage system that does not include tape storage as an option, this Storage Class always provides the lowest cost for each GB of capacity.

Enclosure Chassis ID

Displays the numeric identifier of the Drive Enclosure. The Enclosure Chassis ID is located and displayed on the front of the Drive Enclosure. The numeric values range from 01 to 99; the hexadecimal values from A0 to FF.

Storage Domain

Displays the Storage Domain to which the drive group is assigned.

Physical Capacity

Note: Drive manufacturers often report drive capacities in decimal units (powers of 10). An Oracle FS System reports the capacity of physical storage and the size of logical volumes in binary units (powers of two):

1 MB = 1024² (1,048,576) bytes
1 GB = 1024³ (1,073,741,824) bytes
1 TB = 1024⁴ (1,099,511,627,776) bytes

Allocated: Displays the amount of capacity that has been assigned and designated to all logical volumes residing on the indicated Storage Domain.
Free: Displays the amount of capacity that is available for allocation in the indicated Storage Class.
Preparing: Displays the amount of capacity that is being initialized. This value typically results from a volume having been deleted. This value decreases over time while the value for free space correspondingly increases for the indicated Storage Class.
Total Capacity: Displays the total amount of raw capacity provided by the drive groups that are defined within the indicated Storage Class.
Physical Distribution: Provides a graphical representation of the capacity that is used compared to the maximum that is allocated