Promise Technology P2M4HD4US 4TB Pegasus2 RAID Desktop Storage Enclosure

Promise Technology P2M4HD4US 4TB Pegasus2 RAID Desktop Storage Enclosure

Promise Technology P2M4HD4US 4TB Pegasus2 RAID Desktop Storage Enclosure

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Expected availability: 7-10 business days

Product Highlights

  • 4TB Raw Storage Capacity
  • Includes 4 x 1TB 2.5" Hard Drives
  • RAID 0, 1, 5, 6, and 10 Support
  • 2 x Thunderbolt 2 Ports
  • Hot-Swappable Drive Bays
  • Built-In Promise Utility
  • Backward Compatible with Thunderbolt 1
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Promise Technology P2M4HD4US overview

  • 1Description

The P2M4HD4US 4TB Pegasus 2 RAID Desktop Storage Enclosure from Promise Technology features dual Thunderbolt 2 ports each capable of transferring data at speeds of up to 20 Gb/s, and with two of these ports you have the ability to daisy chain up to 6 devices. This 4TB Pegasus 2 comes equipped with four 2.5" 1TB drives inside the four hot-swappable drive bays. The drives can be formatted RAID 0, 1, 5, 6, and 10 to suit a variety of storage needs from those requiring ultra-fast data storage all the way up to full data redundancy.

Supports maximum throughput allowed by Thunderbolt 2 interface.
Expand storage capacity and backup for new Mac Pro or Windows workstations.
Supports simultaneous streaming, editing, and backup of 4K video.
Dual Thunderbolt ports for daisy-chaining.
Hot-swappable drive bays for effortless drive access and serviceability.
Portable hardware RAID protection for off-site shoots.
Massive storage capacity for backing up creative projects and digital libraries.
Thunderbolt cable included, backwards compatible with 10Gb/s Thunderbolt hosts and devices.
UPC: 704118095551
Table of Contents
  • 1Description

Promise Technology P2M4HD4US specs

Number of Bays 4 x 3.5"
Connections 2 x Mini DisplayPort (Thunderbolt 2)
Form Factor Desktop
RAID Modes RAID 0, 1, 5, 6, 10
OS Compatibility macOS 10.8.5 or Later
Windows 7 or Later
Total Raw Capacity 4 TB (4 x 1 TB)
Initial RAID Configuration None
Pre-Format HFS+
Dimensions (W x H x D) 4.2 x 5.0 x 6.6" / 10.7 x 12.7 x 16.7 cm
Weight 5.5 lb / 2.9 kg
Packaging Info
Package Weight 5.75 lb
Box Dimensions (LxWxH) 9.3 x 9.2 x 7.7"

Promise Technology P2M4HD4US reviews

P2M4HD4US 4TB Pegasus2 RAID Desktop Storage Enclosure is rated 4.3 out of 5 by 8.
Rated 5 out of 5 by from So far so good I bought this because I need SPEED, and portability. I have the larger R6 and get some crazy speeds (700-800MBs, yes a big M and B) with that device. Lets start with the size, this thing is small! About the size of a standard 2 hard drive case (3.5in).I haven't used it a ton but with what I have done you get some pretty good speeds, between 200-400MBs. It looks like it can get just over 300MBs on a regular basis for read and write speeds in RAID 5. I tried RAID 10 and RAID 6 but I wasn't able to get much more speed out of it. I think this is better then a Drobo Mini. So far this device is great, although I have only used it a limited amount.
Date published: 2014-11-17
Rated 4 out of 5 by from Fast, really fast Small unit, perfect for SSD drives.
Date published: 2014-12-14
Rated 4 out of 5 by from Very happy I've been harboring USB external storage solutions for a while now, with clenched teeth on occasion, as the device sometimes ejects all by itself, and potentially compromises whatever is on the device. Well, no more... I hunkered down and finally bought myself a thunderbolt solution with RAID. I could not be happier. This little device exceeds my expectations... plug & play, right out of the box. It even came pre-config'd with RAID 5, the very thing I wanted. If the price was better, for me it would've been 5-stars, but you can't really put a price on peace-of-mind. Which I now have. :-)
Date published: 2016-06-07
Rated 4 out of 5 by from Pretty snappy M4 will be racked with a Mac mini as a web/database server. Very much hoping it can run 24/7/365 for the next couple years. Very quiet. Loaded with four Samsung 840 PRO SSDs in a RAID 10 and getting 750 MB/s read and write via Thunderbolt 1. Setup utility takes a little getting used to but offers some great flexibility once you get the hang of it. Would give it 5 stars but I uncovered some bugs in the setup utility, at least Promise tech support was forthcoming about this and very very helpful (they actually don't support SSDs yet so it was kind of my own fault).
Date published: 2014-09-24
Rated 4 out of 5 by from A Minor Glitch (I Think) I purchased this as an adjunct to a my new 5K iMac. My feeling was that a hardware RAID would be preferable to a software implementation. According to the closed Quick Start pamphlet you need only connect the array to AC power, connect with the included TB cable (the included cable looks to be about 3 Ft BTW) and it would set itself up as a RAID 5 device. It also said this might take some time depending on the capacity of the device so I went to bed expecting it would be done by morning. Well, the next morning it still had not shown up as a drive on my computer so I went to the company website, downloaded the Promise Utility and now it is in the process of initializing and synchronization. I hope to report back that all went well, it's now about 25% done.
Date published: 2014-11-06
Rated 5 out of 5 by from Great Product I have three of these units, the latest is being used on my MacPro as a time machine to hold backups. It is really fast as completing complete and periodic updates and with the raid 5 configuration I am assured that my data is fully protected. I can find nothing bad about the unit.
Date published: 2015-04-26
Rated 4 out of 5 by from solid enclosure Promise RAID software is solid easy to use. Speed out of the box stock is okay (350MB/s to 450MB/s) given the it uses spinning drives. Add SSDs to it as a RAID 0 to really make it fly. Love the portability, simple power plug, no bulky AC adapters.
Date published: 2015-08-24
Rated 4 out of 5 by from Small and fast, for a price I was running out of space on my portable external hard drive and needed to upgrade to something better. I was using it to store my Lightroom catalog and photos, and I've always felt it was slow. So those were my 2 criteria, speed and disk size. Options: * SSD, pros: speed, cons: small disk size * External HD, pros: small disk size, cons: speed Thus I started to look at disk arrays. They sound amazing, where I can get faster speeds. But at a cost. I also didn't like the physical size of it as most other ones use 3.5 disks. Thus the Promise Pegasus2 M4 seemed to be the right choice, but it was expensive. Overall, I'm getting on average 375MB/s reads and writes. Not SSD speeds, but much better performance than before. I love the small footprint of it as well. The only thing not so good is the price.
Date published: 2014-11-02
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