Method of and data storage system for executing disk operations

A computer-implemented method for managing execution of disk operations in a data storage system, the disk operations including write operations, the data storage system being connected to a storage processor, the storage processor being configured for receiving client requests to execute the disk operations on the data storage system, the data storage system including:

• a power supply module,
• a plurality of storage enclosures connected to the power supply module,
• each storage enclosure of the plurality of storage enclosures including at least one disk storage of a plurality of disk storages,
• the plurality of disk storages being configured to host a plurality of logical partitions,
• each logical partition of the plurality of logical partitions being hosted on a respective set of disk storages, the respective set of disk storages being associated with a respective protection group from a plurality of protection groups,
• each respective protection group being configured to execute the disk operations in response to the respective set of disk storages being active,
• a power management module connected to the power supply module,
• the power management module being configured to cause activation of the respective set of disk storages by selectively causing the power supply module to provide power to an associated storage enclosure, and
• the storage processor,
• the method being executable by the storage processor, the method comprising:
• causing activation of a set of protection groups, the set of protection groups including a number of N protection groups from the plurality of protection groups;
• authorizing a subset of protection groups of the set of protection groups to accept execution of disk operations thereon, the subset of protection groups including a number of N−1 protection groups of the set of protection groups and wherein each protection group in the subset of protection groups is associated with a respective identifier, the respective identifier being a number from 1 to N−1;
• receiving, from the storage processor, at least one client request for executing at least one disk operation in the data storage system;
• transmitting the at least one disk operation to the subset of protection groups, the transmitting causing execution of the at least one disk operation;
• in response to determining that an operation parameter of a given protection group of the subset of protection groups is equal to a first respective predetermined threshold, the operation parameter being an occupied storage space, the first respective predetermined threshold being a storage capacity of given protection group multiplied by a ratio of a number associated with the given protection group to the number of N−1 protection groups in the subset of protections groups:
• authorizing a remaining protection group of the set of protection groups to accept execution of disk operations thereon, the authorizing thereby adding the remaining protection group to the subset of protection groups;
• causing deactivation of the given protection group, the deactivation of the given protection group thereby removing the given protection group from the set of protection groups;
• causing activation of a new protection group of the plurality of protection groups, the activation of the new protection group thereby adding the new protection group to the set of protection groups;
• receiving, from the storage processor, at least one second client request for executing at least one second disk operation in the data storage system;
• transmitting the at least one second disk operation to the set of protection groups, the transmitting causing execution of the at least one second disk operation;
• in response to an operation parameter of another given protection group being equal to the respective predetermined threshold:
• authorizing the new protection group of the set of protection groups to accept execution of disk operations, the authorizing thereby adding the new protection group to the subset of protection groups;
• and
• causing activation of a second new protection group of the plurality of protection groups, the activation of the second new protection group thereby adding the second new protection group to the set of protection groups;
• repeating the receiving, the transmitting, and the determining for a plurality of disk operations until a last protection group of the plurality of protection groups is activated and thereby added to the set of protection groups;
• when the last protection group is authorized to accept write operations:
• reactivating the given protection group, the given protection group having been previously deactivated in response to its operation parameter being above the first respective predetermined threshold;
• in response to determining that an operation parameter of the last protection group is equal to the respective predetermined threshold:
• authorizing the given protection group of the set of protection groups to execute disk operations, the authorizing thereby adding the remaining protection group to the subset of protection groups.