Promise Pegasus J4 (2TB) comparison

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Product name

Promise Pegasus J4 (2TB)

Promise Pegasus J4 (2TB)
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Drobo Mini

Drobo Mini
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LaCie 5big Thunderbolt (20TB)

LaCie 5big Thunderbolt (20TB)
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WD My Book Thunderbolt Duo (4TB)

WD My Book Thunderbolt Duo (4TB)
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Price $493 to $798 at 2 stores $539 to $799 at 8 stores $349 to $654 at 5 stores $1,799 to $2,099 at 5 stores $449 at 1 store
CNET editors' rating
3.5 stars Very good
    Overall score: 7.3 (3.5 stars)
4.0 stars Excellent
    Overall score: 8.4 (4.0 stars)
2.5 stars Average
    Overall score: 5.4 (2.5 stars)
4.0 stars Excellent
    Overall score: 8.0 (4.0 stars)
3.5 stars Very good
    Overall score: 7.0 (3.5 stars)
Average user rating 0 stars No reviews, write one! 0 stars No reviews, write one! 5.0 stars out of 5 reviews 0 stars No reviews, write one! 0.5 stars out of 1 review
Release date December 10, 2012 August 29, 2012 November 20, 2012 February 06, 2013 March 21, 2012
The Bottom Line The Pegasus J4 is currently the only good choice on the market if you're looking for a compact four-bay Thunderbolt storage device. The My Book VelociRaptor Duo is one of the best storage devices thanks to its balanced combination of excellent performance, practical design, and relatively friendly pricing. The esoteric Drobo Mini seems to strive to be unique mostly for the sake of uniqueness, and offers very little, if at all, in terms of usability considering its crazily high cost. Though it lacks RAID 5, the speedy 5big Thunderbolt is still worth the hefty investment, and is a better buy than competing devices. The WD My Book Thunderbolt Duo makes a very good external storage device for Thunderbolt-enabled Macs thanks to its comparative affordability, ease of use, and decent performance.

Basic specs

Features See What's the Same or What's different
Packaged Quantity 1
1
Info unavailable Info unavailable 1
Total Array Capacity 2 TB
2 TB
Info unavailable Info unavailable 4 TB
Interface Thunderbolt
Thunderbolt
Info unavailable Info unavailable Thunderbolt
Weight 5.3 lbs
4.2 lbs
Info unavailable Info unavailable 4.9 lbs
Device Type Hard drive array
Hard drive array
Info unavailable Info unavailable Hard drive array
Environmental Standards Info unavailable Yes
Info unavailable Info unavailable Info unavailable
OS Required Apple MacOS X
Apple MacOS X 10.6.8 or later
Info unavailable Info unavailable Apple MacOS X 10.6.8 or later
Installed Devices / Modules Qty 4 (installed) / 4 (max)
2 (installed) / 2 (max)
Info unavailable Info unavailable 2 (installed) / 2 (max)
Localization United States
Latin America
Canada
United States
Info unavailable Info unavailable Latin America
United States
Canada
Dimensions (WxDxH) Info unavailable 3.9 in x 6.2 in x 6.5 in
Info unavailable Info unavailable 3.9 in x 6.2 in x 6.5 in
Manufacturer Warranty 2 years warranty
3 years warranty
Info unavailable Info unavailable 3 years warranty
Supported Drives Serial ATA-300
Info unavailable Info unavailable Info unavailable Info unavailable
Storage Controller (2nd) Info unavailable None
Info unavailable Info unavailable None
Storage Controller RAID ( Serial ATA-300 ) - RAID RAID 1
- RAID JBOD
- RAID RAID 0
RAID - RAID RAID 1
- RAID JBOD
- RAID RAID 0
Info unavailable Info unavailable RAID - RAID RAID 1
- RAID JBOD
- RAID RAID 0
Full specifications Full specifications Full specifications Full specifications Full specifications Full specifications
Buying choices
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