RAID / drive arrays comparing RAID / drive arrays

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Engadget score

83
87
86
pending
76

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Avg. critic rating

8.2
8.6
8.6
9.0
7.2

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Avg. user rating

no data
7.1
no data
no data
8.0

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Price

General

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Total drive bays

2
5
2
4
4

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Occupied drive bays

2
0
2
4
0

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Drive type

Platter
Platter (7200 rpm)

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Included storage

4 TB (total)
2 TB (total)
8 TB (total)

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Addressable storage

15 TB (max)
2 TB (max)
3 TB (max)

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Drive form factor

2.5 inches
3.5 inches
2.5 inches
2.5 inches

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Storage interface

SATA
SATA
SATA
SATA

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Drive insertion

Bare drive
Bare drive
Bare drive

Array types and file systems

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Array types

RAID
Other redundancy
RAID (0, 1, 01)
RAID (0, 1, 5, 6, 10, 01)
Other redundancy

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Automatic storage expansion

Yes

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Mixed drive capacities

Yes
No

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Hot-swappable drives

Yes
No
Yes

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Hot-spare support

Yes
No
Yes

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Degraded usage mode

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Data integrity

S.M.A.R.T. compliant

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File system support

NTFS, HFS+
HFS+ (Journaled)
NTFS, HFS+

Speed

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Read speed (max)

233 MBps
20000 MBps

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Write speed (max)

233 MBps
20000 MBps

Other features

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Activity / status indicator

Yes
Yes

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Front text display

No

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Shortcut / backup button

No

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Desktop client application

Yes

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OS support

Windows, Mac OS

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Capacity gauge

Yes
Yes

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Health status indicator

Yes

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Cooling fan

Yes
Yes

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Security lock slot

Yes
Yes

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Upgradeable firmware

Yes

Connections (to host computer)

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USB

3.0
3.0
No
3.0

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Thunderbolt

2 port(s)
1 port(s)
2 port(s)
2 port(s)

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eSATA

No
No
No

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FireWire / 1394

No
No
No

Memory card reader

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Memory card reader

No
No

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Memory card support

Power

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Power features

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Power adapter

Internal
External
Internal
External

Size and Weight

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Height

7.3 inches
1.3 inches
1.8 inches

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Width

5.9 inches
3.48 inches
7.3 inches

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Depth

10.3 inches
5.64 inches
7.1 inches

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Weight

8.5 pounds
1.01 pounds
2.2 pounds

Pricing and Availability

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Availability

Available
Available
Available
Available
Available

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Discontinued (US)

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Released (US)

March 28, 2014
November 12, 2013
July 18, 2012

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Announced (US)

January 5, 2014
June 21, 2012
June 21, 2012

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Rumored (US)

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Original price

$299 USD
$853 USD
$299 USD
$649 USD

Colors

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Colors

Black
Black
Black
Black
Black

General Info

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Mfr. warranty

3 days
2 years

Environmental

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