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it has not been tested, it may or may not work. The Promise Pegasus R4i is a four-drive hardware RAID array that can easily slide into your Mac Pro thanks to its MPX form factor. If it is not on this list then it is not officially supported i.e. If it is on this list then it has been tested and approved for use.
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The Pegasus2 R6 18TB RAID system offers the best value combination of performance, protection, and capacity. The Pegasus2 R6 12TB RAID system offers terrific value, at the lowest cost for BOTH performance and protection. The compatibility sheet has the list of current qualified and supported compatible products. The Pegasus2 R4 8TB RAID system offers an easy entry point into the Thunderbolt 2-based storage family. The Pegasus2 is the fastest and the only Thunderbolt 2 enabled hardware RAID storage available in the market. We have not tested SSD drives on Pegasus R4 unit and will not be able to diagnose if any performance issue occurred on those drives. As per the compatibility list, SATA Hard Drives has listed for Pegasus R4 products.
#PROMISE PEGASUS R4 8TB FULL#
It is best to make a new array with the new drives to get the full space otherwise if you replace one drive at a time, the space will be truncated to the same size as your current 2 TB drives.ΔΆ. You need to change the all the drive as a same size. If you replace 3 or 4 TB drive in any of the slot, the Pegasus controller will identify smaller size drive and consider all the drive size would be 2 TB hence cannot use remaining space.
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There is a limitation to go with the drive upgrdation.