Transferring data between block and file storage systems

A system comprising:

• a memory that includes one or more ranks, each rank having one or more extents, each extent having one or more strides;
• and
• a processor communicatively coupled to the memory, the processor being configured to perform a method comprising:
• receiving a request to transmit a logical volume stored in the memory to a remote server;
• determining whether the logical volume is stored using block-level storage;
• determining, in response to determining that the logical volume is stored using block-level storage, an extent of the one or more extents that includes data of the logical volume;
• determining a set of strides associated with the extent;
• copying the set of strides for the extent into a stride buffer;
• combining the set of strides for the extent into a block extent file;
• and
• transmitting the block extent file to the remote server.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform a method comprising:

• receiving a request to transmit a logical volume stored on a host server to a remote server, the logical volume being stored in a data storage system that includes one or more ranks, each rank having one or more extents, each extent having one or more strides;
• determining whether the logical volume is stored using block-level storage;
• determining, in response to determining that the logical volume is stored using block-level storage, an extent of the one or more extents that includes data of the logical volume;
• determining a set of strides associated with the extent;
• copying the set of strides for the extent into a stride buffer;
• combining the set of strides for the extent into a block extent file;
• and
• transmitting the block extent file to the remote server.