Striping in a storage system

A non-transitory computer readable medium for striping, the non-transitory computer readable medium stores instructions for:

• performing, for each period of time out of multiple periods of time, the steps of:
• simulating an assignment of disk chunks to stripes, wherein the simulating is iterated for each stripe size value candidate of multiple stripe size value candidates, wherein each iteration provides a set of values of storage system parameters according to the assignment;
• determining striping rules;
• wherein the determining of the striping rules comprises selecting one or more selected stripe size values out of the multiple stripe size value candidates, wherein different stripe size value candidates indicate different numbers of disks participating in a stripe;
• wherein the selecting is based on sets of values of the storage system parameters that are provided by the simulating, and according to priorities between a storage system throughput and a storage space utilization;
• wherein the storage system parameters comprise the storage space utilization and the storage system throughput;
• wherein a certain value of the storage space utilization is based on the amount of space available for striping if using a certain stripe size value candidate of the multiple stripe size value candidates;
• wherein a certain value of the storage system throughput is based on the number of stripes that can be written in parallel if using the certain stripe size value candidate;
• and
• applying the striping rules by the storage system, during the period of time;
• wherein the applying comprises obtaining data chunks;
• converting the data chunks to stripes having at least one of the one or more selected stripe size values;
• and storing the stripes in the storage system.

A storage system comprising multiple disks and at least one processing circuitry that is configured to perform, for each period of time out of multiple periods of time, the steps of:

• simulating an assignment of disk chunks to stripes, wherein the simulating is iterated for each stripe size value candidate of multiple stripe size value candidates, wherein each itteration provides a set of values of storage system parameters according to the assignment;
• determining striping rules;
• wherein the determining of the striping rules comprises selecting one or more selected stripe size values out of the multiple stripe size value candidates, wherein different stripe size value candidates indicates different numbers of disks participating in a stripe;
• wherein the selecting is based on sets of values of the storage system parameters that are provided by the simulating, and according to priorities between a storage system throughput and a storage space utilization;
• wherein the storage system parameters comprise the storage space utilization and the storage system throughput;
• wherein a certain value of the storage space utilization is based on the amount of space available for striping if using a certain stripe size value candidate of the multiple stripe size value candidates;
• wherein a certain value of the storage system throughput is based on the number of stripes that can be written in parallel if using the certain stripe size value candidate;
• applying the striping rules by the storage system, during the period of time;
• wherein the applying comprises obtaining data chunks;
• converting the data chunks to stripes having at least one of the one or more selected stripe size values;
• and storing the stripes in the storage system.