Power consumption control

A non-transitory computer readable medium for power management of a storage system unit, the non-transitory computer readable medium stores instructions for:

• selecting a power reduction measure out of (a) a shutdown of at least one stateless compute node out of stateless compute nodes of the storage system unit, and (b) an other power reduction measure that does not involve the shutdown of the at least one stateless compute node, while prioritizing the shutdown of the at least one stateless compute node over the other power reduction measure;
• wherein the storage system unit further comprises storage nodes;
• wherein states related to communications with client computers (i) are maintained in the storage nodes, and (ii) are not stored on the stateless compute nodes;
• and
• applying the power reduction measure based on the selecting.

A storage system unit that comprises:

• stateless compute nodes;
• storage nodes;
• and
• at least one power manager module;
• wherein the at least one power manager module is configured to:
• select a power reduction measure out of (a) a shutdown of at least one stateless compute node out of stateless compute nodes of the storage system unit, and (b) an other power reduction measure that does not involve the shutdown of the at least one stateless compute node, while prioritizing the shutdown of the at least one stateless compute node over the other power reduction measure;
• wherein the storage system unit further comprises storage nodes;
• wherein states related to communications with client computers (i) are maintained in the storage nodes, and (ii) are not stored on the stateless compute nodes;
• and
• apply the power reduction measure based on the selection.