Storage & Hardware

RAID, storage arrays, backups and power supplies.

• Backup Window Calculator How long full and incremental backups take, and whether they fit your window.
• PC Power Consumption Cost Calculator What a computer costs to run per year, from its power draw when busy, idle and asleep.
• PC Power Supply Wattage Calculator The power supply size for a PC from the wattages of its parts.
• RAID Capacity Calculator Usable capacity of RAID 0, 1, 5, 6 and 10 arrays from the number and size of disks.
• RAID Fault Tolerance Calculator How many failed disks each RAID level survives, and the chance of surviving a given number.
• Storage Array Usable Space Calculator The space you can really plan to use after hot spares, RAID, file system overhead and free-space reserve.