Thunderbolt technology is a new, high-speed, dual-protocol I/O technology designed for performance, simplicity, and flexibility. Capable of delivering a blistering two channels of bi-directional 10 Gbit/s (1.25GB/s) per port of performance, Thunderbolt technology combines PCI Express and Display port into an interface using a single cable for connectivity to devices. Thunderbolt technology was developed by Intel and brought to market with technical collaboration from Apple.
Pegasus R4 is ideal for creative pro workstations, small servers, power users, and consumers who desire stylish high-capacity external storage with high performance and enterprise level data protection. Pegasus R4 is capable of delivering over 500 MB/s of bandwidth that is 10 times faster than USB 2.0.
Easy to Use management software
Pegasus R4 comes preconfigured out of the box. Simply unpack, connect the power cable, connect the Thunderbolt cable (sold separately) to the Thunderbolt port on your computer and you're ready to store music, photos, videos, and documents or ingest and edit production video. Managing Pegasus R4 is effortless with software designed for Mac OS X.
Storage for the Digital Home
With two channels of bi-directional 10 Gbit/s performance Thunderbolt allows you to back up your computer while editing the video of your summer vacation and listening to an iTunes playlist. Fast, safe, and reliable external storage is essential to protect your music, photos, videos, and other valuable data. Pegasus R4 provides massive storage space and fast performance for popular applications such as iTunes, iPhoto, iMovie, Garageband, Photoshop, and media center applications. Backup your invaluable digital media, documents, and also your entire computer or workstation to Pegasus R4 with Time Machine in Mac OS X.
Blistering performance and unparalleled flexibility
With over 500 MB/s of performance Pegasus R4 with Thunderbolt delivers a massive and unprecedented leap in raw power and performance for amateur professionals, audio engineers, photographers, and video post production engineers. Final Cut professionals can ingest, edit, and playback multiple streams of uncompressed HD 10-bit and 12-bit video while protecting valuable workflows, audio sessions, and other creative media content with Promise's award-winning enterprise level RAID 6 engine featuring mature error-handling schemes for the ultimate in data protection. Graphic artists using Adobe Photoshop and Maya 3D animation software can manipulate and archive high-resolution graphics on Pegasus with lightning-fast responsiveness and relative ease.
Thunderbolt technology's multi-protocol support enables Pegasus R4 to deliver amazing flexibility. Daisy-chain more than one Pegasus R4 enclosure to a single Thunderbolt port or connect a display to Pegasus R4 for the ultimate in convenience and interface connectivity.
Hardware RAID protection for small business
Protect your valuable business data with a reliable hardware RAID solution. You can use Pegasus R4 as large storage for a desktop system or as external storage solution for a small server. With 3TB of storage in RAID 5, you'll have the capacity you need for data and backups with the protection of hardware RAID.
Cost-effective expandable storage for home use
In today's digital world, you consistently acquire and amass large amounts of personal digital media using smart phones and digital cameras, in addition to downloadable digital media acquired through online stores such as iTunes. The Pegasus R4 can protect all these memories meant to last a lifetime from single drive failures, at the same time it's providing data protection, high availability, and high reliability.
Flexible backup solution
Connect Pegasus R4 to your Mac for use with Time Machine to back up your critical system files, applications, data files, music, pictures, and videos.
Ultra-quiet and eco-smart
Pegasus R4 is RoHS compliant. In simple terms Pegasus R4 is eco-friendly, keeping harmful lead out of the environment and our delicate ecosystems. Sporting a new enclosure design, an 80Plus power supply, and active fan management, system noise is never an issue—making Pegasus R4 ideal for desktop, small office environments and or any room in the house.
- 4TB of raw capacity (2.7TB configured RAID 5 and formatted with HFS+)
- Advanced RAID engine
- Supports RAID 0, 1, 5, 50, 6, 60 and 10
- Attractive, stylish, and compact enclosure
- Ultra-quiet design
- Two Thunderbolt ports
- Hot-swappable bays for effortless drive access and serviceability
- Robust error handling provides superior data protection
Did you notice?To use a Pegasus RAID System with your Mac, you'll need a Thunderbolt cable.
Apple Recommends ForCreative pro workstations, small servers, power users, and consumers who desire stylish high-capacity external storage with high performance and enterprise level data protection.
What's in the Box?
- Pegasus R4 with four 1TB 7200-rpm drives
- Quick start guide
- Power cable
- Connections : Thunderbolt
- Power : Power consumption: 78W max load (read and write); 55W idle mode
- Height : 9.9 in./25.0 cm
- Width : 7.7 in./19.5 cm
- Weight : 15.3 lb./6.9 kg
- Length : 7.3 in./18.5 cm
- Mac OS X v10.6.8 or later
- 100MB of free hard-drive space
- Mac with Thunderbolt port
- Thunderbolt cable (sold separately)
- Mfr. Part Number : F40DS4700100000
- UPC or EAN No. : 704118085552
- 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 with a one-year limited warranty on fan and power adapter
- To use a Pegasus RAID System with your Mac, you'll need to purchase a Thunderbolt cable.
Ratings & Reviews
It Definitely Has the Speed, But ...
Drive is installed on a 2011 17" MacBook Pro (8,3) Core I7 2.3 GHz 8 GB.
IMHO, $50 is a little much for a 6 foot cable that oug ht to be included with the drive.
Out of the box, it comes set up for a RAID 5 configuration which gives you 3 TB. Here are QuickBench results with 1.093 TB free:
Transfer Size Large Read Large Write
2 MBytes 620.975 MB/Sec 554.112 MB/Sec
3 MBytes 698.929 MB/Sec 610.119 MB/Sec
4 MBytes 724.439 MB/Sec 610.904 MB/Sec
5 MBytes 766.055 MB/Sec 625.012 MB/Sec
6 MBytes 774.070 MB/Sec 590.093 MB/Sec
7 MBytes 788.594 MB/Sec 613.141 MB/Sec
8 MBytes 808.657 MB/Sec 657.099 MB/Sec
9 MBytes 818.175 MB/Sec 707.836 MB/Sec
10 MBytes 801.079 MB/Sec 622.765 MB/Sec
Large Ave 755.664 MB/Sec 621.231 MB/Sec
... Which is almost 3 times faster than my 3 Gbs SSD.
But first you have to wait 10 hours while it sets up the RAID 5 configuration. Backups from my SSD to the Pegasus are lightening fast. However, I've noticed two problems with this drive. The first and most serious is that when I tried to transfer large folders (> 1 TB) to the R4 from a G Raid drive connected via an esata card, the copy would halt after a few hundred GB and my G Raid drive would be trashed. It did this twice in a row. I was finally able to transfer the files by connecting the G Raid with a FW 800 connection. This is probably an Apple rather than a Promise prroblem.
The second problem is that when using the Pegasus as a boot drive, it's no faster or even slower booting than a regular HDD. My SSD is much faster on boot, but at least you can boot from the Pegasus. I'm going to reconfigure it as a RAID 0 and get 33% more storage than I have now and hopefully a speed increase. …
- Written by JOHN M from Tetonia
275 of 311 people found this useful
Pegasus RAID R4
I use this system with my MacBook Pro 17 in 2.3 GHz.
As mentioned in another review it takes over 10 hours of setup time after taking it out of the box and is configured for RAID 5. This leaves 3TB of storage. After testing transfer speeds, it averages around 380 MB/s read/write using the AJA system test.
I have my Apple Cinema Display 30 in monitor via dual link mini-display port attached to the Thunderbolt port on the Pegasus. It does not allow passive transfer via the Thunderbolt port so you must keep the Pegasus on in order to use the external display.
The OWC 3g SSD inside the MBP boots much faster than the Pegasus, even though data transfer is around 240 MB/s by AJA system test.
The OS was updated to 10.7 and seems to run fine on the Pegasus system.
Overall, the system is a little pricey but offers a reliable fast external storage system. …
- Written by Adam A from Las Vegas
168 of 191 people found this useful
Fastest Storage Ever Made!!!
This is the fastest external storage device ever made available to consumers period! I transferred my entire iTunes library (182 G B) from my MacBook air (2011) to the promise Pegasus R4 model in 14 min which is crazy fast. Though the Pegasus did not heat up during the process thanks to the duel fans and remained quiet. Also promise kept Mac user in mind with a simple set up and a application to manage Pegasus Which is done for you. This application basically runs Ccheck ups on space, temperature, power, etc. With great power comes great cost, though its worth the money if your going to use pegasus to its full potentioal. Promise also announced they would eventually sell precofigured drives for pegasus- which makes upgrading an option down the road. Being a consumer who is using the Promise Pegasus to store my iTunes library and stream movies from it, it works great. I can watch an HD movie from the Pegasus without any lag, even when skipping around. Buyers be aware that it will take 10 hours to automatically set up/configure the pegasus drives. I just sat back and let it do its thing. All in all this is a product that lives up to its name and is lightning fast. …
- Written by Casey S from Wheat Ridge
126 of 139 people found this useful
Pegasus R4 Setting up
Received R4 fitted with Toshiba Drive's (4 x 1TB - DT01ACA100). Powered up on Monday at 1pm. Spec says it takes 10 hours to sync . 1pm next day, Tuesday, lights on unit still flashing. Tuesday eve at 10pm still flashing. Next morning, all now synced....! Used with FCP for HD editing - very happy with performance - but early days yet. So like others - don't know why the info supplied says 10 hours to sync. Mine's took 30+ hours!! …
- Written by John M from Londonderry
Promise Pegasus R4 (4x1.5TB) RAID System
Plug in the power.
Plug in the Thunderbolt cable.
Turn on your Mac.
Opened the very nice Promise utility twice.
Promptly forgot about it.
Two years later the astonishingly fast, silent drive continues to function flawlessly for backup, file storage, and Final Cut X on a daily basis.
In mine, Hitachi drives are housed inside the beautifully designed case.
The mechanism to remove a drive is so well engineered, so elegant, and so simple, it speaks to the overall quality of the product.
I have crushed numerous other drives under regular use.
The Promise Pegasus I would unhesitatingly buy again. …
- Written by George C from Honolulu
Like the girl with the strawberry curl
when it is good, it is very very good, but when it is bad, it is awful. I've been using this product for about 6 months as a back up for my iMac. I have two major problems - it is almost impossible to power down. The power button does not work 90% of the time. You have to wiggle it and hold your mouth just right, and sometimes, just pull the plug. And when I do power it down, it is almost impossible to get remounted so that iMac finds it. I don't know if it is the cable, the plug-ins on the mac (I say this because one time switching between the two thunderbolt plug-ins seemed to work), the Pegasus r4, or all of the above. Not to mention, I am not a geek - I just want my hardware to work correctly. …
- Written by Martha C from San Antonio
0 of 2 people found this useful