Data for managed disks on storage systems in capacity and relationship reports
You can include general information, capacity data, properties, and other information about managed disks on storage systems in capacity and relationship reports.
Information about managed disks on storage systems
You can create capacity and relationship reports that include the following information:
- Storage System MDisk Name
- The name that was assigned to the managed disk on a storage system when it was added to the system.
Capacity and usage data
You can create capacity and relationship reports that include the following information:
- Storage System MDisk Capacity (GiB)
- The amount of storage space on the managed disk.
- Storage System MDisk Available Space (GiB)
- The amount of storage space that is available on a managed disk. This value is only available for resources that are running IBM Storage Virtualize™ and are configured as back-end storage.
- Storage System MDisk Strip Size (KB)
- The RAID strip size on a managed disk on a storage system.
Component properties
You can create capacity and relationship reports that include the following information:
- Storage MDisk RAID Level
- The RAID level of the managed disk, such as RAID 5 or RAID 10. The RAID level affects the performance and fault tolerance of the volumes that are allocated from the managed disk.
- Storage MDisk Spare Goal
- The number of spare drives that are required to maintain redundancy. Use spare drives to protect the system against drive failures in the array on a managed disk on a storage virtualizer.
- Storage System MDisk Type
- The type of managed disk on a storage system. For example, the disk on a storage system can be a local managed disk.
- Storage System MDisk Mode
- The access mode of a managed disk on a storage virtualizer. The
access mode describes how extents are provided for virtual disks.
Extents can be provided to virtual disks in the following ways:
- Array
- Extents are provided from local disks.
- Managed
- Extents are provided from a back-end storage volume.
- Unmanaged
- The managed disk is not used in the system.
- Storage System MDisk Is Balanced
- Shows whether LUNs are balanced across storage controllers on
the managed disk. If this value is
Yes, the LUNs are balanced. - Storage System MDisk Fast Write State
- Shows whether the cache for a volume on a disk that is managed by a storage system is empty, contains data, or is corrupted.
- Storage System MDisk Write Verify
- Shows whether all write operations on a managed disk on a storage
system are verified by an immediate follow-up read operation. The
follow-up read operation verifies that the write operation was successful.
If this value is
Yes, all write operations are verified by a follow-up read operation.
Status information
You can create capacity and relationship reports that include the following information:
- Storage System MDisk Status
- The condition of the resource, for example normal, warning, or error.
- Storage MDisk Native Status
- Shows the level of access of nodes in the system to a managed disk or volume on a storage system. The level of access can be online, offline, degraded, or excluded.