Abstract: A storage system comprises a plurality of storage nodes each comprising one or more storage devices. Each of the storage nodes further comprises a processor coupled to a memory. The storage system is configured to prefill a given stripe across multiple ones of the storage devices with data blocks to a first fullness level, to designate at least a subset of the prefilled data blocks of the stripe as available for use in prefilling one or more logical storage volumes of the storage system, and to prefill a given one of the logical storage volumes to a second fullness level utilizing selected ones of the available data blocks. The given stripe across multiple ones of the storage devices illustratively comprises a RAID stripe.

Abstract: A storage system comprises a plurality of storage nodes each comprising one or more storage devices. At least a given one of the storage nodes is configured to generate data blocks for prefilling of at least a subset of the storage devices, to maintain a first portion of the generated data blocks in a pool of data blocks available in the given storage node for prefilling one or more of the storage devices of the given storage node, and to send a second portion of the generated data blocks from the given storage node to one or more other ones of the storage nodes for prefilling one or more other ones of the storage devices of the one or more other storage nodes. Each of the other storage nodes can similarly maintain a separate pool of generated data blocks for prefilling its corresponding storage devices.

Abstract: A storage system comprises a plurality of storage nodes each comprising one or more storage devices. At least a given one of the storage nodes is configured to read data blocks from its one or more storage devices, and for a given one of the data blocks, to determine based at least in part on a content-based signature of that data block whether or not the given data block is appropriate for use in a prefilling operation of the given storage node. Responsive to the given data block being appropriate for use in the prefilling operation of the given storage node, the given storage node uses the data block in the prefilling operation of the given storage node. Responsive to the given data block not being appropriate for use in the prefilling operation of the given storage node, the given storage node sends the data block to another one of the storage nodes for use in a prefilling operation of that other storage node.

Abstract: A storage system comprises a plurality of storage nodes each comprising one or more storage devices. At least a given one of the storage nodes is configured to read data blocks from its one or more storage devices, and for a given one of the data blocks, to determine based at least in part on a content-based signature of that data block whether or not the given data block is appropriate for use in a prefilling operation of the given storage node. Responsive to the given data block being appropriate for use in the prefilling operation of the given storage node, the given storage node uses the data block in the prefilling operation of the given storage node. Responsive to the given data block not being appropriate for use in the prefilling operation of the given storage node, the given storage node sends the data block to another one of the storage nodes for use in a prefilling operation of that other storage node.

Abstract: A storage system comprises a plurality of storage nodes each comprising one or more storage devices. Each of the storage nodes further comprises a processor coupled to a memory. The storage system is configured to prefill a given stripe across multiple ones of the storage devices with data blocks to a first fullness level, to designate at least a subset of the prefilled data blocks of the stripe as available for use in prefilling one or more logical storage volumes of the storage system, and to prefill a given one of the logical storage volumes to a second fullness level utilizing selected ones of the available data blocks. The given stripe across multiple ones of the storage devices illustratively comprises a RAID stripe.

Abstract: A storage system comprises a plurality of storage nodes each comprising one or more storage devices. At least a given one of the storage nodes is configured to generate data blocks for prefilling of at least a subset of the storage devices, to maintain a first portion of the generated data blocks in a pool of data blocks available in the given storage node for prefilling one or more of the storage devices of the given storage node, and to send a second portion of the generated data blocks from the given storage node to one or more other ones of the storage nodes for prefilling one or more other ones of the storage devices of the one or more other storage nodes. Each of the other storage nodes can similarly maintain a separate pool of generated data blocks for prefilling its corresponding storage devices.

Abstract: Example embodiments of the present invention relate to methods, systems, and a computer program product for detecting and avoiding storage array performance degradation. The method includes anticipating an unpredictable performance state of a storage device in a storage array that degrades storage array functionality according to a performance profile for a storage device type of the storage device. In response, performance of the storage array may be adjusted to avoid the storage device entering the unpredictable performance state.