PROMISE Pegasus2 M4 4TB (4 by 1TB SFF) Thunderbolt 2 RAID System

  • Overview

    The PROMISE Pegasus2 M4 4TB is a small and light Thunderbolt 2 RAID storage system that you can take anywhere to work on your complex multimedia projects. It's compact and whisper-quiet, so it fits into any environment. Plus, it offers even faster performance with 20 Gbps Thunderbolt 2 connectivity, whilst ensuring enterprise-class reliability and ease of use.

    Designed for portability, minimal intrusion and harmony

    Pegasus2 M4 is compact, light and quiet yet with lots of capacity and Thunderbolt 2 speed. It looks and fits perfect next to your Mac on a desktop and tucks neatly into your bag to take your data on the road. This combination makes it an essential tool for media professionals needing mobility along with speed, capacity and protection for their data.

    Easy to use and eco-smart

    Pegasus2 systems come pre-configured straight out of the box, so you can just plug them in and start working. The built-in Promise Utility gives you quick access to status, management tools and advanced settings. You also get the benefit of an eco-friendly and RoHS-compliant design.

    Enterprise-class RAID protection for your peace of mind

    Pegasus2 M4 provide enterprise-level RAID storage protection for your valuable files such as music, photos and videos - without sacrificing speed. Pegasus2 products support a broad range of RAID levels, as well as automatic error-handling.

    Highlights

    Four 2.5-inch drives with 4TB of raw capacity

    Compact, portable, solid and ultra-quiet enclosure

    Advanced RAID engine, supports RAID 0, 1, 5, 6, 10

    Robust error handling for superior data protection

    Two Thunderbolt 2 ports for daisy chaining up to six devices

    Hot-swappable bays for effortless drive access and serviceability

    Built-in Promise Utility for systems management and advanced settings

    Backward compatible with 10 Gbps Thunderbolt hosts and devices

    Did you notice?

    Operates at Thunderbolt 2 speeds yet is compact and quiet.

    Apple Recommends For

    Storing and quickly accessing complex multimedia projects in your office, small business or on the road.

    What’s in the Box?

    PROMISE Pegasus2 M4 4TB (4 x 1TB SFF) RAID System

    Thunderbolt cable

    Power cable

    Quick start guide

    Tech Specs

    Other Features: RAID support, Time Machine compatible

    Connections: Thunderbolt

    Power: Power consumption: 60W max load (read and write); 39W idle

    Height: 10.7 cm/4.2 in.

    Length: 16.7 cm/6.6 in.

    Width: 12.7 cm/5 in.

    Weight: 2.61 kg

    Manufacturer Information

    Part Number

    Mfr. Part Number: F40PR4M03000000

    UPC or EAN No.: 704118097708

    Warranty

    Note: Products sold through this website that do not bear the Apple Brand name are serviced and supported exclusively by their manufacturers in accordance with terms and conditions packaged with the products. Apple's Limited Warranty does not apply to products that are not Apple-branded, even if packaged or sold with Apple products. Please contact the manufacturer directly for technical support and customer service.

    Warranty: Two years; extended warranty options available from PROMISE

  • 5.0 Average
    5 out of 5 stars
    Number of stars Percentage Number of reviews
    • 5.0 out of 5 stars

      PROMISE Pegasus2 M4 4TB Thunderbolt 2 RAID System

      Just bought it yesterday. It's surprisingly compact and quiet. Out of the box it was simple to connect and worked exactly as advertised. Formatted automaticall Just bought it yesterday. It's surprisingly compact and quiet. Out of the box it was simple to connect and worked exactly as advertised. Formatted automatically for RAID 5 to 3TB's of storage. That process took some time but was expected. MacPro recognized it immediately and configured it. Now that its formatted and operating, it's really fast accessing data... almost instantaneous. So far, quite pleased. As an aside, as the price of SSD's comes down, will eventually replace the mechanical drives with SSD's but right now couldn't be happier.

      • Written by Pete T from Smyrna

      48 of 50 people found this useful

      Is this review useful?PROMISE Pegasus2 M4 4TB Thunderbolt 2 RAID System

    • 5.0 out of 5 stars

      Awesome

      I bought one of these and replaced all of the drives with Samsung 840 1TB SSD's. It's not a supported configuration, but it's the fastest storage I've ever seen I bought one of these and replaced all of the drives with Samsung 840 1TB SSD's. It's not a supported configuration, but it's the fastest storage I've ever seen on a mac, even in raid5. The performance in application is actually faster than the blackmagic speed test measures. Way over 1GB/sec. Reads peak out at over 1.5GB/sec. Just what I needed. If your work is dependent on IO performance this is a great way to go.

      • Written by Samuel E from Santa Monica

      35 of 36 people found this useful

      Is this review useful?Awesome

    • 5.0 out of 5 stars

      Wonderful Performance

      I purchased two of these units and daisy chained them to occupy only one Thunderbolt connection on my iMac. Disturbed by my four G-Drives dismounting for no lo I purchased two of these units and daisy chained them to occupy only one Thunderbolt connection on my iMac. Disturbed by my four G-Drives dismounting for no logical reason and frequently during an operational day, I replaced the G-Drives with the Pegasus2 M4s. It took several hours for the new drives to synchronize but that was to be expected. Moved all my data from the G-Drives to the Pegasus and saw a significant increase in access times. The G-Drives have been retired and I will now rely on these significantly faster Pegasus drives to insure my data is secure. I kept the factory default settings and now feel comfortable that with the ability to do a hot replacement of any drive failures, the RAID configuration will serve my needs quite well. I would absolutely recommend these drives for anyone with sensitive data that they do not want to risk losing and that need to have a reliable connection without the risk of constant dismounting.

      • Written by David S from Walnut

      24 of 24 people found this useful

      Is this review useful?Wonderful Performance

    • 5.0 out of 5 stars

      Long Term Review

      I've had my unit now for around 9 months+ and here's my experience so far. Initially I was using it with the supplied 1Tb standard hard drives and it was fine b I've had my unit now for around 9 months+ and here's my experience so far. Initially I was using it with the supplied 1Tb standard hard drives and it was fine but for me, I wanted more speed. Out of the box you can expect around 450-500Mb/s read and write performance which is plenty fast for most people. I decided that because I was using it with a large Lightroom library as well as editing 4K video in Final Cut Pro X that I'd see how 4 1Tb SSD's went. 2 months down the line with 4 x Samsung 850 EVO 1Tb drives I'm in performance heaven. I get over 800Mb/s write and and over 1000Mb/s reads on the device now. I should also point out that the unit is tiny and takes up about the desk space of an iPad Mini and is almost silent in use. The noise is a BIG issue when using standard 3.5" drive RAID units so doing Video work and having an almost silent RAID that can easily be moved between home and office with those kinds of speeds if a massive benefit for me. At the time I'm writing this review 1Tb SSD's are around £240 so you need to budget almost £2K for the Promise and SSDs but if speed, noise and portability are important to you, it's well worth the investment. In summary, out of the box or upgraded with SSDs this is a fantastic device. No power brick to carry around as the power supply is internal and it runs like a dream with zero hassle. Currently running on El Capitan but also used heavily on Yosemite with zero issues too.

      • Written by Jeff N from HARTLEPOOL

      2 of 2 people found this useful

      Is this review useful?Long Term Review

    • 5.0 out of 5 stars

      Wonderful Performance

      I purchased two of these units and daisy chained them to occupy only one Thunderbolt connection on my iMac. Disturbed by my four G-Drives dismounting for no lo I purchased two of these units and daisy chained them to occupy only one Thunderbolt connection on my iMac. Disturbed by my four G-Drives dismounting for no logical reason and frequently during an operational day, I replaced the G-Drives with the Pegasus2 M4s. It took several hours for the new drives to synchronize but that was to be expected. Moved all my data from the G-Drives to the Pegasus and saw a significant increase in access times. The G-Drives have been retired and I will now rely on these significantly faster Pegasus drives to insure my data is secure. I kept the factory default settings and now feel comfortable that with the ability to do a hot replacement of any drive failures, the RAID configuration will serve my needs quite well. I would absolutely recommend these drives for anyone with sensitive data that they do not want to risk losing and that need to have a reliable connection without the risk of constant dismounting.

      • Written by David S from Walnut

      24 of 24 people found this useful

      Is this review useful?Wonderful Performance

    • 5.0 out of 5 stars

      Awesome

      I bought one of these and replaced all of the drives with Samsung 840 1TB SSD's. It's not a supported configuration, but it's the fastest storage I've ever seen I bought one of these and replaced all of the drives with Samsung 840 1TB SSD's. It's not a supported configuration, but it's the fastest storage I've ever seen on a mac, even in raid5. The performance in application is actually faster than the blackmagic speed test measures. Way over 1GB/sec. Reads peak out at over 1.5GB/sec. Just what I needed. If your work is dependent on IO performance this is a great way to go.

      • Written by Samuel E from Santa Monica

      35 of 36 people found this useful

      Is this review useful?Awesome

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