Storage control device to control storage devices of a first type and a second type

1. A storage control device, comprising:

a memory; and

a processor coupled to the memory and configured to

classify second type storage devices into a first group and a second group, the second type storage devices temporarily storing thereof data held in a first type storage device, the second type storage devices being classified into the first group and the second group based on a time taken for processing on data stored in each of the second type storage devices and a time taken for updating firmware of each of the second type storage devices, and

access the first type storage device using storage devices belonging to the second group while updating firmware of storage devices belonging to the first group, the updating of the firmware including software for executing an operating system by one or more central processing units of the storage devices belonging to the first group,

wherein the processor is configured to classify the second type storage devices into the first group and the second group by adding the time taken for processing for each of the second type storage devices in descending order until a sum of the adding exceeds a predetermined value, classifies the second type storage devices included in the adding into the first group, and classifies the second type storage devices not included in the adding into the second group.

2. The storage control device according to claim 1 , wherein

the processor is configured to

perform, while updating the firmware of the storage devices belonging to the first group, processing on data stored in the storage devices belonging to the second group prior to processing on data not stored in the storage devices belonging to the second group.

3. The storage control device according to claim 1 , wherein

the processor is configured to

perform, while updating the firmware of the storage devices belonging to the first group, processing on data not stored in the storage devices belonging to the first group prior to processing on data stored in the storage devices belonging to the first group.

4. The storage control device according to claim 1 , further comprising:

a storage unit configured to store therein information for identifying each piece of the data held in the first type storage device in association with each of the second type storage devices,

wherein

the processor is configured to

perform, while updating the firmware of the storage devices belonging to the first group, processing on data associated with storage devices belonging to the second group prior to processing on data associated with storage devices belonging to the first group on basis of the information stored in the storage unit.

5. The storage control device according to claim 4 , wherein

the processor is configured to

update, while updating the firmware of the storage devices belonging to the first group, the information stored in the storage unit when performing processing on first data associated with a storage device belonging to the first group such that the first data is to be associated with a storage device belonging to the second group.

6. The storage control device according to claim 1 , wherein

the processor is configured to

accesses, after updating the firmware of the storage devices belonging to the first group, the first type storage device using the storage devices belonging to the first group while updating firmware of the storage devices belonging to the second group.

7. The storage control device according to claim 1 , wherein

the first type storage device stores data in a magnetic tape, and

the second type storage devices store data in magnetic disks.

8. A non-transitory computer-readable recording medium having stored therein a program that causes a computer to execute a process, the process comprising:

classifying second type storage devices into a first group and a second group, the second type storage devices temporarily storing thereof data held in a first type storage device, the second type storage devices being classified into the first group and the second group based on a time taken for processing on data stored in each of the second type storage devices and a time taken for updating firmware of each of the second type storage devices, and

accessing the first type storage device using storage devices belonging to the second group while updating firmware of storage devices belonging to the first group, the updating of the firmware including software for executing an operating system by one or more central processing units of the storage devices belonging to the first group,

wherein the process further comprises classifying the second type storage devices into the first group and the second group by adding the time taken for processing for each of the second type storage devices in descending order until a sum of the adding exceeds a predetermined value, classifying the second type storage devices included in the adding into the first group, and classifying the second type storage devices not included in the adding into the second group.