Abstract: Utilizing different data compression algorithms based on characteristics of a storage system, including: detecting that an availability of resources to a storage system for storing additional data in the storage system has changed; and based on the detection, selecting a data compression algorithm to utilize to compress data that is different compared to a previously selected data compression algorithm.

Abstract: Utilizing different data compression algorithms based on characteristics of a storage system, including: selecting, in dependence upon a priority for conserving processing resources or storage resources in a storage system, a data compression algorithm to utilize to compress data; detecting that at least one of an amount of processing resources available in the storage system or the amount of space available to store additional data in the storage system has changed; and responsive to detecting that at least one of the amount of processing resources available in the storage system or the amount of space available to store additional data in the storage system has changed, selecting a different data compression algorithm to utilize to compress data.

Abstract: A method, apparatus, and computer program product for tier-specific data compression, comprising comparing costs associated with a plurality of storage configurations for storing data based on one or more usage characteristics of data, wherein each storage configuration of the plurality of storage configurations corresponds to a particular storage tier of a plurality of storage tiers and a particular compression algorithm of a plurality of compression algorithms and based on the comparison of the costs, storing the data using a storage configuration of the plurality of storage configurations.

Abstract: Utilizing different data compression algorithms based on characteristics of a storage system, including: selecting, in dependence upon a priority for conserving processing resources or storage resources in a storage system, a data compression algorithm to utilize to compress data; detecting that at least one of an amount of processing resources available in the storage system or the amount of space available to store additional data in the storage system has changed; and responsive to detecting that at least one of the amount of processing resources available in the storage system or the amount of space available to store additional data in the storage system has changed, selecting a different data compression algorithm to utilize to compress data.

Abstract: Compressing data in dependence upon characteristics of a storage system, including: receiving an amount of processing resources available in the storage system; receiving an amount of space available in the storage system; and selecting, in dependence upon the priority for conserving the amount of processing resources and the amount of space, a data compression algorithm to utilize to compress the data.

Abstract: A storage system performs garbage collection with data compression. A storage controller in the storage system determines a garbage collection directive by evaluating the amount of reclaimable space relative to a target amount of reclaimable space. Garbage collection is performed using data compression tunable to compression aggressiveness according to the garbage collection directive.

Abstract: Compressing data in dependence upon characteristics of a storage system, including: receiving an amount of processing resources available in the storage system; receiving an amount of space available in the storage system; and selecting, in dependence upon the priority for conserving the amount of processing resources and the amount of space, a data compression algorithm to utilize to compress the data.

Abstract: Systems, apparatuses, methods, and computer-readable storage mediums for performing lease-based fencing using a time-limited lease window. During the time-limited lease window, writes to a shared storage medium are permitted, while writes are denied for expired leases. When a successful heartbeat is generated for a primary storage controller, the lease window is extended for the primary storage controller from the time of a previous heartbeat. Accordingly, a prolonged stall between successive heartbeats by the primary storage controller will result in the newly extended lease being expired at the time it is granted. This scheme prevents a split brain scenario from occurring when a secondary storage controller takes over as the new primary storage controller in response to detecting the stall.

Abstract: Systems, apparatuses, methods, and computer-readable storage mediums for performing lease-based fencing using a time-limited lease window. During the time-limited lease window, writes to a shared storage medium are permitted, while writes are denied for expired leases. When a successful heartbeat is generated for a primary storage controller, the lease window is extended for the primary storage controller from the time of a previous heartbeat. Accordingly, a prolonged stall between successive heartbeats by the primary storage controller will result in the newly extended lease being expired at the time it is granted. This scheme prevents a split brain scenario from occurring when a secondary storage controller takes over as the new primary storage controller in response to detecting the stall.

Abstract: Compressing data in dependence upon characteristics of a storage system, including: receiving an amount of processing resources available in the storage system; receiving an amount of space available in the storage system; and selecting, in dependence upon the priority for conserving the amount of processing resources and the amount of space, a data compression algorithm to utilize to compress the data.

Abstract: The present invention relates to boot code processing of a computer system, and in particular to a method and respective system for managing boot code of a computer system, wherein the system comprises at least a first and a redundant second boot memory portion, and wherein the system is booted from one of said portions, referred to as the active booting portion, the other boot portion being in a stand-by mode and being referred to as inactive boot portion.

Abstract: The present invention relates to boot code processing of a computer system, and in particular to a method and respective system for managing boot code of a computer system, wherein the system comprises at least a first and a redundant second boot memory portion, and wherein the system is booted from one of said portions, referred to as the active booting portion, the other boot portion being in a stand-by mode and being referred to as inactive boot portion.