Patent application number | Description | Published |
20120284433 | INPUT/OUTPUT HOT SPOT TRACKING - A system having input/output hot spot tracking is disclosed. The storage system includes a storage device, a host controller coupled to the storage device, and a tracking engine coupled to the host controller and the storage device. The host controller is configured to managed input/output of the storage device. The tracking engine includes a storage map cycling between active status and passive status. Input/output commands are stored in the storage map during the active status. Like input/output commands in the storage map during active status are counted and compared to a number. Counts greater than the number are reported as input/output hot spots. | 11-08-2012 |
20130097118 | PERFORMANCE ASSIST STORAGE VOLUMES - Techniques for allocation of storage volumes are described. Response times of a primary storage may be monitored to determine if the primary storage is input/output limited. A performance assist storage volume may be allocated and data replicated between the primary storage and the performance assist storage volume. Input/output requests may be distributed between the primary storage and the performance assist storage volume. | 04-18-2013 |
20140304469 | DATA STORAGE - Storage drives configured as an m-way mirroring disk array with a primary set with a primary portion on each storage drive member in the array and (m−1) mirror sets with mirror portions on each storage drive member in the array to store duplicated data blocks of the primary set, each of the drives to have a primary portion and at least one mirror portion arranged in a stacked configuration. Generate primary write requests to write the data blocks to one or more of the primary portions of the primary set of the plurality of drives, and generate a corresponding mirroring requests to write the duplicated data blocks to corresponding mirror portions of the mirror sets of the drives, wherein, to preserve data redundancy, the primary portion and the corresponding one or more mirror portions with the duplicated data of the primary portion are to reside on different drives. | 10-09-2014 |
20140351208 | STORAGE SYSTEM DEVICE MANAGEMENT - This document describes, in various implementations, features related to receiving, at a storage system that includes a storage volume and a plurality of storage devices that operate separately from the storage volume, read requests directed to data stored on the storage volume. The document also describes replicating certain data stored on the storage volume to the storage devices such that read requests associated with the certain data are fulfilled either by the storage volume or by the storage devices. The document also describes determining first usage information that is indicative of actual or expected usage of the storage system at a first time, and powering down at least one of the storage devices based on the first usage information. | 11-27-2014 |