Abstract: Methods, systems, and computer programs are presented for backing up data to a distributed multichannel storage system. One method includes an operation for detecting, by a distributed backup system (DBS), a request for backing up data from a host to the distributed backup system. The DBS sends a request to a backup agent executing at the host to initiate the backup. The backup agent mounts an endpoint for writing to the DBS and executes a script that writes the data for the backup to the endpoint. Further, the method includes operations for creating a file system stack at the DBS associated with the endpoint, storing data received by the file system stack at the DBS, and detecting, by the DBS, an end of the backup. The DBS sends a command to the backup agent to end the backup and terminates the file system stack at the DBS.

Abstract: Exemplary methods, apparatuses, and systems receive from a client a request to access data from a client. Whether metadata for the data is stored in a first caching layer is determined. In response to the metadata for the data not being stored in the first caching layer, it is determined if the data is stored in the second caching layer. In response to determining that the data is stored in the second caching layer, the data is retrieved from the second caching layer. In response to determining that the data is not stored in the second caching layer, writing of the data to the second caching layer is bypassed. The retrieved data is sent to the client.

Abstract: In a computer-implemented method for configuring flash cache for input/output operations to a storage device by a plurality of virtual machines an input/output trace log for each of a plurality of virtual machines is accessed. Performance of each of the plurality of virtual machines based on a plurality of configurations of the flash cache is simulated in real-time. A recommendation of the plurality of configurations of the flash cache for the each of the plurality of virtual machines utilizing results from the simulation is generated.

Abstract: Exemplary methods, apparatuses, and systems receive from a client a request to access data from a client. Whether metadata for the data is stored in a first caching layer is determined. In response to the metadata for the data not being stored in the first caching layer, it is determined if the data is stored in the second caching layer. In response to determining that the data is stored in the second caching layer, the data is retrieved from the second caching layer. In response to determining that the data is not stored in the second caching layer, writing of the data to the second caching layer is bypassed. The retrieved data is sent to the client.

Abstract: Systems and techniques are described for analyzing input output I/O traces. One of the techniques includes receiving an I/O trace, the I/O trace identifying a temporal sequence of previously submitted I/O requests; partitioning the I/O trace into a plurality of partitions based on a load pattern of the I/O requests in the I/O trace and a data access pattern of the I/O requests in the I/O trace; and generating a signature for each partition, wherein the signature for each of the partitions identifies characteristics of the I/O requests in the partition, and wherein the characteristics of the I/O requests in the partition include the load pattern of the I/O requests in the partition and the data access pattern of the I/O requests in the partition.

Abstract: Systems and techniques are described for analyzing input output I/O traces. One of the techniques includes receiving an I/O trace, the I/O trace identifying a temporal sequence of previously submitted I/O requests; partitioning the I/O trace into a plurality of partitions based on a load pattern of the I/O requests in the I/O trace and a data access pattern of the I/O requests in the I/O trace; and generating a signature for each partition, wherein the signature for each of the partitions identifies characteristics of the I/O requests in the partition, and wherein the characteristics of the I/O requests in the partition include the load pattern of the I/O requests in the partition and the data access pattern of the I/O requests in the partition.

Abstract: In a computer-implemented method for configuring flash cache for input/output operations to a storage device by a plurality of virtual machines an input/output trace log for each of a plurality of virtual machines is accessed. Performance of each of the plurality of virtual machines based on a plurality of configurations of the flash cache is simulated in real-time. A recommendation of the plurality of configurations of the flash cache for the each of the plurality of virtual machines utilizing results from the simulation is generated.