Managing data storage

A system for use in managing data storage, the system comprising:

• first logic managing data storage in a data storage system, wherein the data storage system comprises a first and a second storage processor and a plurality of data storage devices arranged in a RAID configuration, the first and the second storage processor having respective caches configured to mirror each other;
• second logic receiving a plurality of write I/O operations for updating data storage in the data storage system;
• third logic establishing stripe layout in the plurality of data storage devices in the data storage system;
• based on the received plurality of write I/O operations and the established stripe layout, fourth logic determining whether the plurality of write I/O operations comprise logical blocks necessary to form at least one full stripe write;
• in response to determining that the plurality of write I/O operations do not comprise logical blocks necessary to form at least one full stripe write, fifth logic delaying write-back caching in order to establish if a further write I/O will be received that can be aggregated with received write I/O to form a full stripe write, wherein write-back caching comprises acknowledging completion of a write I/O after data has been stored in the respective caches;
• in response to determining that the plurality of write I/O operations comprise logical blocks necessary to form at least one full stripe write, sixth logic aggregating the plurality of write I/O operations to form the at least one full stripe write,
• calculating parity in connection with the at least one full stripe write, and
• bypassing cache and delivering the at least one full stripe write and parity to the plurality of data storage devices in the data storage system.