Tbolt RAID 5 (6h) = Promise Pegasus R6 Thunderbolt RAID enclosure (six 2TB Hitachi 7K3000s in RAID 5 mode) connected to a 2011 iMac 3.4GHz Core i7 Tbolt RAID 0 (4s) = Promise Pegasus R4 Thunderbolt RAID enclosure (four 240G OWC 6G SSDs in RAID 0 mode) connected to a 2011 iMac 3.4GHz Core i7 SAS RAID 0 (4s) = Stardom ST8-U5 enclosure (four 240G OWC 6G SSDs in RAID 0 mode) connected to a HighPoint RocketRAID 2722 installed in PCie 2.0 slot #2 of 2010 Mac Pro Westmere. ( RED bar indicates the fastest Thunderbolt config ORANGE bar indicates the fastest SAS config.)
Settings were 4.0GB File Size, 2048x1556 10-bit RGB Video Frame Size, 335 frames, file system cache disabled. Then, using the Promise RAID Utility, we set up our RAID 0 set.ĪJA System Test was used to measure large sequential read and write speed. We immediate switched the factory HDDs out for four OWC 6Gb/s SSDs. Finally we had a Pegasus R4 Thunderbolt RAID enclosure in the lab. Then we heard from a "remote mad scientist" with a Promise Pegasus R4 Thunderbolt RAID enclosure - four HDDs in RAID 5 mode. To put it in perspective, we compared it to a six drive RAID 5 set running on a SAS/SATA host adapter on the Mac Pro. While we were waiting to get our hands on a Thunderbolt enclosure, one of our "remote mad scientists" has a 2011 iMac connected to a Promise Pegasus R6 Thunderbolt RAID enclosure - six HDDs configured in RAID 5 mode.
PROMISE PEGASUS R4 THUNDERBOLT ENCLOSURE UPGRADE
Updated September 14th, 2011, with new target mode resultsĪfter fimrware upgrade of 2011 MacBook Air. Posted Tue, July 12th, 2011, by rob-ART morgan, mad scientist
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