Work out usable capacity, efficiency and fault tolerance for RAID 0, 1, 5, 6, 10, 50 and 60 arrays.
Battery Life Calculator
Estimate how long a battery lasts from its capacity and the device's average or sleep and active current, and size series and parallel packs.
SLA Uptime Calculator
Turn an uptime percentage into allowed downtime per day, week, month, quarter and year, or downtime back into uptime.