STORAGE VOLUME DEVICE AND METHOD FOR INCREASING WRITE SPEED FOR DATA STREAMS WHILE PROVIDING DATA PROTECTION

摘要

The present disclosure describes a method for increasing the write speed for data streams on storage volumes, such as RAID volumes, by delaying the extra operations associated with data protection when one or more data streams are written to the storage volume. Specifically, in response to a storage volume receiving a data block for writing to the volume, the storage volume determines whether the data block is part of a larger data stream. If the data block is part of a larger data stream, the data block is written to the volume, but the steps of creating volume recovery data is delaying until a period of low activity on the storage volume in order to maximize write speed for the data stream. When a low period of activity (e.g., below a threshold level) is detected, volume recovery data is created for the data block and written to the volume.

主权项

1. A method for increasing write speed, while providing data protection, on a storage volume comprising multiple drives, the method comprising:
receiving a data block for writing to the storage volume; determining whether the data block is part of a larger data stream; in response to determining that the data block is not part of a larger data steam, writing the data block to one or more of the drives, and creating and writing volume recovery data for the data block at substantially the same time or immediately afterwards; and in response to determining that the data block is part of a larger data stream, performing the following:
writing the data block to one or more of the drives and delaying creating volume recovery data for the data block until a low period of activity on the storage volume in order to maximize write speed for the data stream;monitoring the storage volume for activity below a threshold level; andin response to the storage volume activity being below the threshold level, creating volume recovery data for the data block and writing the volume recovery data to one or more of the drives.