International Business Machines Corporation

Intellectual Business Machines Corporation

Alexander Saupp

Nils Haustein

Evangelos Stavros Eleftheriou

Jens Jelitto

Ioannis Koltsidas

Robert Haas

Slavisa Sarafijanovic

Harald Seipp

Daniel James Winarski

Dominic Mueller-Wicke

A tape drive system server includes a non-volatile memory used as a cache memory for storing data files, at least part of the cache memory comprising a first region managed using a First In First Out policy management and a second region managed using a Least Recently Used policy management; a file system interface for interacting with data files stored on a tape drive system; an interface for allowing one or more remote systems reading and writing data stored on the cache memory; the server configured to: receive from the one or more remote systems one or more write requests for writing one or more data files; interpret attributes associated to data files instructed to be written by the one or more remote systems; and store data files instructed to be written by the remote systems according to the interpreted attributes.

Tape drive system server

According to one embodiment, an independent file server connected to a wide area network (WAN) includes local file storage, a file system comprising information about directory structures, path, and file names of other file systems of other file servers connected to the WAN, and a deduplication module configured to communicate with other deduplication modules of other file servers connected to the WAN, perform data deduplication of data objects stored locally in the local file storage, and create and maintain a deduplication table mapping data chunks of locally stored data objects to identification characteristics and storage location in the local file storage, and construction plans of data files including locations of data chunks within the data files. Other systems, methods, and computer program products are presented according to more embodiments.

Data file handling in a network environment and independent file server

A method for migrating files from a source server to a target server are disclosed. The method includes determining file property information for one or more data files on the source server. One or more data file entries are created in a file property table with the file property information for each data file. A data file entry is selected from the file property table. The file property information of the selected data file entry from the file property table is compared to the file property information of the corresponding data file stored in the source server to determine whether there is a match. In response to determining a mismatch, the data file in the source server is copied to the target server. The data file copied to the target server is verified to be the same as the data file of the source server.

Storage device data migration

A system and method for reading files stored on a storage system is disclosed. The method includes communicatively coupling one or more remote systems for reading files stored in storage with a first set of files according to a predetermined data format and in a cache memory with a second set of files, the second set of files being a subset of the first set of files. Next one or more remote systems are received at least one read request for reading a sequence of files. A determination is made, among the files of the sequence of files, whether one or more cached files are already stored in the cache memory and whether one or more remaining files are not already stored in the cache memory. Creating, within the one or more remaining files, an order according to which the remaining files should be read on the storage system.

Reading files stored on a storage system

Growing community of inventors

Mainz, Germany

Alexander Saupp