Data for managed disks on storage virtualizers in capacity and relationship reports
You can include general information, capacity data, properties, and other information about managed disks on storage virtualizers in capacity and relationship reports.
Information about managed disks on storage virtualizers
You can create capacity and relationship reports that include the following information:
- Storage Virtualizer MDisk Name
- The name that was assigned to the managed disk on a storage virtualizer when it was added to the system.
Capacity and usage data
You can create capacity and relationship reports that include the following information:
- Storage Virtualizer MDisk Capacity (GiB)
- The amount of storage space on the managed disk.
- Storage Virtualizer MDisk Available Space (GiB)
- The amount of space on managed disks that is available in a pool, or is available to be added to a pool.
- Storage Virtualizer MDisk Strip Size (KB)
- The RAID strip size on a managed disk on a storage virtualizer. This value is not shown for Hitachi Universal Storage Platform V storage systems that are configured to virtualize back-end storage.
Component properties
You can create capacity and relationship reports that include the following information:
- Storage Virtualizer 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 Virtualizer MDisk Spare Goal
- The number of spare drives that are required to maintain redundancy. Use spare drives to protect against drive failures in the array on a managed disk on a storage virtualizer.
- Storage Virtualizer MDisk Type
- The type of managed disk on a storage virtualizer. For example, the storage virtualizer can be a local or virtual managed disk.
- Storage Virtualizer 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 Virtualizer 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 Virtualizer MDisk Fast Write State
- Shows whether the cache for a volume on a disk that is managed by a storage virtualizer is empty, contains data, or is corrupted. This value is not shown for Hitachi Universal Storage Platform V storage systems that are configured to virtualize back-end storage.
- Storage Virtualizer MDisk Write Verify
- Shows whether all write operations on a managed disk on a storage
virtualizer 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 Virtualizer MDisk Status
- The condition of the resource, for example normal, warning, or error.
- Storage Virtualizer MDisk Native Status
- Shows the level of access of nodes in the system to a managed disk or volume on a storage virtualizer. The level of access can be online, offline, degraded, or excluded.