Abstract: A computer program product maintains a printer profile associated with each of a plurality of printers. For each printer, the printer profile includes the current power status, a cost to power up, and a rate of cost to print. A print job is received and, for each printer, a total cost to print the print job, including the cost to power on the printer, is determined. The print job is redirected from a default printer to a destination printer selected from printers having a lower total cost to print. Each printer profile may further include a time period to power up and a print speed, and, for each printer, a total time period to print the print job is determined. The total time period includes an amount of time to complete other print jobs, and further includes, where the printer is off, the time period to power on the printer.

Abstract: Dynamic disk space management in a file system, including: assigning, by a disk utilization manager upon creation of each file in the file system, a unique identifier to the file; tracking, by the disk utilization manager for each file in the file system, file characteristics in dependence upon the unique identifier of the file; prioritizing, by the disk utilization manager in dependence upon the tracked file characteristics and a predefined set of prioritization criteria, files in the file system; tracking, by the disk utilization manager, utilization of disk drive space; and, upon utilization of disk drive space exceeding a predetermined maximum threshold, reducing, by the disk utilization manager in dependence upon the priorities of files, disk drive space utilization to no greater than a predetermined capacity.