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| Product | LaCie Little Big Disk Thunderbolt (hard drive array) | Promise Pegasus R6 (12TB, SATA II) | Promise Pegasus J4 (2TB) | WD My Book Thunderbolt Duo (6TB) | Promise Pegasus R4 (4TB) |
| Price | $999.00 to $999.09 | $2,304.75 to $2,499.99 | $699.00 to $839.99 | $549.00 to $880.64 | $922.90 to $1,887.95 |
| CNET editors' rating | Info unavailable | 3.5 stars | 3.5 stars | 3.5 stars | 3.5 stars |
| Average user rating | 0 stars | 3.5 stars | 0 stars | 0 stars | 0 stars |
| Release date | Info unavailable | Info unavailable | Info unavailable | Info unavailable | Info unavailable |
| Bottom line | Info unavailable | If you have a Thunderbolt-enabled computer, the Promise Pegasus R6's storage capacity, its features, and especially its performance are worth the hefty investment for those who demand fast external storage. | 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 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. | The Pegasus R4 would be a very good investment for those who have a Thunderbolt-enabled computer, be it Windows PC or
Mac. |
| Product Description | LaCie Little Big Disk Thunderbolt - Hard drive array | Promise Pegasus R6 - Hard drive array | Promise Pegasus J4 - Hard drive array | WD My Book Thunderbolt Duo WDBUPB0060JSL - Hard drive array | Promise Pegasus R4 - Hard drive array |
| Packaged Quantity | 1 | 1 | 1 | 1 | 1 |
| Device Type | Hard drive array | Hard drive array | Hard drive array | Hard drive array | Hard drive array |
| Total Array Capacity | 1 TB | 12 TB | 2 TB | 6 TB | 4 TB |
| Interface | Thunderbolt | Thunderbolt | Thunderbolt | Thunderbolt | Thunderbolt |
| Installed Devices / Modules Qty | 2 (installed) / 2 (max) | 6 (installed) / 6 (max) | 4 (installed) / 4 (max) | 2 (installed) / 2 (max) | 4 (installed) / 4 (max) |
| Supported Drives | Serial ATA-600 | Serial ATA-300 | Serial ATA-300 | Info unavailable | Serial ATA-600 |
| Dimensions (WxDxH) | 1.6 in x 5.5 in x 3.3 in | 7.4 in x 9.3 in x 9.8 in | Info unavailable | 3.9 in x 6.2 in x 6.5 in | 7.4 in x 9.3 in x 7.7 in |
| Weight | 22.9 oz | 13 lbs | 5.3 lbs | 5.1 lbs | 9.9 lbs |
| Storage Controller | RAID ( Serial ATA-600 ) - RAID RAID 0 | RAID ( Serial ATA-300 ) - RAID RAID 50 - RAID RAID 1 - RAID RAID 10 - RAID RAID 6 - RAID RAID 5 - RAID RAID 0 | RAID ( Serial ATA-300 ) - RAID RAID 1 - RAID JBOD - RAID RAID 0 | RAID - RAID RAID 1 - RAID JBOD - RAID RAID 0 | RAID ( Serial ATA-600 ) - RAID RAID 1E - RAID RAID 1 - RAID RAID 10 - RAID RAID 6 - RAID RAID 5 - RAID RAID 0 |
| Hard Drive | 2 x 500 GB Solid state Serial ATA-600 | - Thunderbolt technology 6 x 2 TB Hot-swap - Flexible connectivity - RoHS compliant | 4 x 500 GB Standard Serial ATA-300 | - Thunderbolt technology 2 x 3 TB Standard - Double-safe data protection | 4 x 1 TB Hot-swap |
| Hard Drive (2nd) | None | None | Info unavailable | None | None |
| OS Required | Apple MacOS X 10.6 or later | Apple MacOS X 10.6.8 or later | Apple MacOS X | Apple MacOS X 10.6.8 or later | Apple MacOS X 10.6 or later |
| Manufacturer Warranty | 3 years warranty | 2 years warranty | 2 years warranty | 3 years warranty | 2 years warranty |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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LaCie Little Big Disk Thunderbolt compare (hard drive array)
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