Under the conditions of this competitive upgrade customers must return either SPARCstorage Array 10X/11X or 20X/21X series storage system with minimum of 20 Gigabytes of storage or 30 Gigabytes, in order to upgrade to the Sun StorEdge A3000.The StorEdge A3000, designed for mission-critical data center applications, is a fully-redundant RAID solution with the highest RAS features offered by Sun. This system will meet the needs of even the most demanding environments. For maximum data availability at an affordable price, trust your mission-critical applications to the Sun StorEdge A3000 array.