Network data management protocol restore using logical seek

A system comprising:

• one or more non-transitory computer-readable medium having computer-executable instructions stored thereon;
• and
• one or more processors that, having executed the computer-executable instructions, cause a system to perform a plurality of operations comprising:
• receiving, by a media agent being executed on a first computing device, a first request from a network attached storage device to read a first data block from secondary copy data from a secondary storage device, wherein:
• the first request comprises:
• a first logical offset that indicates a first location for locating the first data block within the secondary copy data, wherein:
• the first logical offset is determined relative to the secondary copy data, and
• the secondary copy data was generated by the network attached storage device and transmitted to the media agent for storage at the secondary storage device, and
• a first size indicating an amount of data to read starting from the logical offset;
• and
• the secondary copy data has been segmented into a plurality of backup chunks stored within the secondary storage device, wherein each backup chunk has a predetermined size;
• determining, based on the first logical offset of the first request, a backup chunk selected from the plurality of backup chunks corresponding to the first data block;
• determining a first physical offset at the secondary storage device to start reading the first data block from the determined backup chunk, wherein the determined first physical offset is associated with the first logical offset and is measured relative to the secondary storage device;
• reading from the first physical offset a second size of data from the determined backup chunk to obtain the first data block, wherein the second size of the data is determined based on the first size;
• and
• sending the obtained first data block to the network attached storage device, wherein the network attached storage device restores a first file based on the first data block.

A non-transitory, computer-readable medium having computer-executable instructions stored thereon that, when executed by one or more processors, cause a system to perform a plurality of operations comprising:

• receiving, by a media agent being executed on a first computing device, a first request from a network attached storage device to restore a first data block from secondary copy data from a secondary storage device, wherein:
• the first request comprises:
• a first logical offset that indicates a first location for locating the first data block within the secondary copy data, wherein:
• the first logical offset is determined relative to the secondary copy data, and
• the secondary copy data was generated by the network attached storage device and transmitted to the media agent for storage at the secondary storage device, and
• a first size indicating an amount of data to read starting from the logical offset;
• and
• the secondary copy data has been segmented into a plurality of backup chunks stored within the secondary storage device, wherein each backup chunk has a predetermined size;
• determining, based on the first logical offset of the first request, a backup chunk selected from the plurality of backup chunks corresponding to the first data block;
• determining a first physical offset at the secondary storage device to start reading the first data block from the determined backup chunk, wherein the determined first physical offset is associated with the first logical offset and is measured relative to the secondary storage device;
• reading from the first physical offset a second size of data from the determined backup chunk to obtain the first data block, wherein the second size of the data is determined based on the first size;
• and
• sending the obtained first data block to the network attached storage device, wherein the network attached storage devices restores a first file based on the first data block.