Pass-through tape access in a disk storage environment
AssigneeInternational Business Machines Corporation
InventorsJoshua J. Crawford, Paul A. Jennas, II, Jason L. Peipelman, Matthew J. Ward
Life of this patent
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Abstract
A command to write data to a virtual location is received at a disk storage system. The virtual location is mapped to a tape storage system. A record is generated including the data, the virtual location, and a sequence value. The sequence value indicates relative sequence when compared to other sequence values. The record is written to a record location on a tape cartridge loaded in a tape drive. Record metadata on the disk storage system is modified to indicate that the first record location contains the first record. The data on the record can be read from the tape cartridge.
Claims20
A method for pass-through tape access in a disk storage environment, the method comprising:
- receiving, at a disk storage system, a command to write data to a first virtual location, the first virtual location mapped to a tape storage system;
- generating a first record comprising the data, the first virtual location, and a first sequence value, the first sequence value indicating relative sequence when compared to other sequence values;
- writing the first record to a first record location on a first tape cartridge loaded in a tape drive;
- and
- modifying record metadata on the disk storage system to indicate that the first record location contains the first record.
A system comprising:
- a tape storage system comprising a set of tape cartridges;
- and
- a disk storage system connected to the tape storage system, the disk storage system configured to:
- receive a command to write data to a first virtual location, the first virtual location mapped to a tape storage system;
- generate a first record comprising the data, the first virtual location, and a first sequence value, the first sequence value indicating relative sequence when compared to other sequence values;
- write the first record to a first record location on a first tape cartridge loaded in a tape drive;
- and
- modify record metadata on the disk storage system to indicate that the first record location contains the first record.
Dependencies are inferred from the claim text.