![]() ![]() Internally Promise uses a PMC Sierra PM8011 8-port SAS-2 RAID controller. ![]() I did run into some reliability issues with the Pegasus R6 configured with 4 x SF-2281 SSDs, however it's unclear whether they were caused by the drives themselves, the Pegasus or a combination of the two. I did try installing Seagate 3TB drives and SandForce SF-2281 SSDs in the system, both of which worked. These are four platter drives with 64MB buffers. The 12TB Pegasus R6 we received for review came with 6 x 2TB Hitachi Deskstar 7K3000 drives. Through Apple you can buy any of four configurations: Promise Pegasus LineupĪll of the configs ship with 3.5" 7200RPM hard drives and are configured as a single RAID-5 array by default, although Pegasus supports most of the common RAID formats (RAID 0/1/5/50/6/10). The names are easy enough to understand, they simply refer to the number of drive bays. Promise offers two versions of the Pegasus: the R4 and R6.
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