โทรสอบถามราคาพิเศษ
Typically multi-bay external storage devices tend to utilize 3.5" drives due to the lower cost and higher capacities. The downside, however, is that 3.5" drives are physically larger and heavier, which makes a multi-bay enclosure rather difficult to move around on a regular basis. To fix this, Promise is offering a 4-bay 2.5" RAID solution called the M4.
| Promise Pegasus2 Lineup | ||||
| M4 | R4 | R6 | R8 | |
| Form Factor | 4 x 2.5" | 4 x 3.5" | 6 x 3.5" | 8 x 3.5" |
| Supported RAID Levels | 0, 1, 5, 6, 10 | 0, 1, 5, 6, 10 | 0, 1, 5, 6, 10, 50 | 0, 1, 5, 6, 10, 50, 60 |
| Connectivity | 2x Thunderbolt 2 (20Gbps each) | |||
| Available Capacities | 4TB | 8TB | 12TB & 18TB | 24TB & 32TB |
| DImensions (HxWxL) | 4.2" x 5.0" x 6.6" | 7.5" x 9.6" x 7.3" | 9.8" x 9.6" x 7.3" | 12.2" x 9.6" x 7.3" |
| Weight | 5.5lb / 2.9kg | 15lb / 6.8kg | 20.1lb / 9.1kg | 24.2lb / 11kg |
Aside from capacity, the M4 offers everything that the R4 does as you get hardware RAID 5 and two Thunderbolt 2 ports for daisy-chaining. The weight comes in at almost one third of the R4's weight and the dimensions are considerably smaller too, which makes the M4 a lot more portable than the rest of the Pegasus2 lineup. Sadly Thunderbolt 2's ten watts of power is not capable of powering the M4, so it is not a fully portable solution like regular external hard drives are.


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