1. Promise Technology Pegasus Manual Mac Pro
2. Promise Technology Pegasus Manual Mac Mini

Promise Technology's Pegasus R4 is the first Thunderbolt storage device that works with the Windows platform right out of the box. But it wasn't always that way.

The drive was actually first released together with the Pegasus R6 more than a year ago, when Thunderbolt first came out for Macs exclusively. Now the Thunderbolt standard is available and works virtually the same for both Windows and Mac platforms. From my trial with Intel's first Thunderbolt-certified motherboard, the switch of file system from HFS+ to NTFS (which can be easily done) is the only major thing you need to do to make any previously Mac-only Thunderbolt storage device work with Windows.

1. The Pegasus R4 Thunderbolt storage device from Promise Technology shows that Windows users can now enjoy the Thunderbolt peripheral standard, just as Mac users have for more than year.
2. There is a Pegasus3 Utility for Mac that offers macOS 10.12.1 support on your web site - but as yet no update for the Pegasus2 RAID unit. I'm experiencing some issues with a Mac Mini running macOS Sierra 10.12.2 and a Promise Pegasus R8 unit and another issue with a new MacBook Pro (Late 2016) connecting to a Promise Pegasus R4.
3. Promise Technology J2256GB 265GB Pegasus J2 Thunderbolt 10Gb/s Enabled Storage Solution. Features dual mSATA SSDs, bus-powered portable design, RAID 0, 1 or JBOD with speeds up to 750MB/s.

And you don't have to do that with the new Pegasus R4, since it also now comes preformatted for Windows. Effectively, it marks the end of an era in which Thunderbolt storage was exclusively for Mac.

Just because Thunderbolt is now available for Windows doesn't mean it's noticeably cheaper. The Pegasus R4 still costs about $1,000 for 4TB or $1,500 for the 8TB version, and you still need to buy the Thunderbolt cable separately. My guess is that the price of the technology as a whole will come down quickly since the Thunderbolt ecosystem has become a lot more popular, with more and more vendors joining.

That said, you're looking for a superfast storage device for use with your brand-new Thunderbolt-enabled computer, such as one that's powered by Intel's new DZ77RE-75K motherboard, the R4 will make a great investment. If you want more options in terms of storage space and other features, also check out the R6 and other Thunderbolt drives I've reviewed.

Promise Technology Pegasus Manual Mac Pro

Design and features
While some 5 pounds lighter than its big brother, the R6, the Pegasus R4 Thunderbolt drive is still huge, weighing about 15 pounds. This is to be expected since it has enough room to host four standard-size 3.5-inch hard drives. The drive looks very much like the R6, just two drive bays shorter. With an all-aluminum chassis and the white color, it looks more like a typical Mac device than one that works with Windows. But it does work with both, and the review unit is preformatted using NTFS, which is Windows' native file system.

Promise Technology PR402US 8.0TB Pegasus R4 RAID Thunderbolt Storage Solution. The first 4-bay High Performance Hardware RAID Solution designed to unleash the raw power of Thunderbolt. 2 Year Promise Technology Warranty. Promise Technology Pegasus3 R4/R6/R8 Pegasus Utility If you can open the Pegasus Utility, but you cannot create or delete disk arrays and logical drives, nor can you make settings changes, check the UI lock. See “Unlocking the UI in Mac” on page 51. Page 206: Viewing Nvram Events. The latest generation of Pegasus RAID storage, PROMISE Pegasus3 R4 delivers the power of Thunderbolt 3 technology to Mac users. Now you can get the blazing speeds essential for your high-resolution video and rich media projects, along with the safety.

On the back, the R4 comes with a standard power connector, the kind you normally find at the back of a desktop computer. This is very convenient since it means you can use the same type of power cable. There's a big ventilation fan and there are two Thunderbolt ports. Most Thunderbolt devices have two ports, one for connecting to a host computer and the other to another Thunderbolt drive. You can add up to five more devices this way in a daisy-chain setup. In my trials with a computer running Windows 7, the R4 worked well with other Thunderbolt devices, including Apple's Thunderbolt Display. I did need to install Apple's Boot Camp software for the display to work, however.

Note that, like all of the Thunderbolt devices I've reviewed, the Pegasus R4 doesn't come with the necessary Thunderbolt cable. You can get a long (6-foot) one from Apple for $50 or a shorter (3-feet) one from Belkin for $45.

On the front of the R4, in addition to the standard power button and status lights, you'll find the four drive bays. These bays are closed with a latch that's easily opened but prevents you from pulling a drive out accidentally. When a tray is pulled out, you can install a hard drive on it fairly easily with a standard Phillips-head screwdriver. My review unit came with four SATA 3 (6Gbps) hard drives of 1TB capacity each installed, making the total capacity of 4TB, or 3TB in the default RAID 5 setup. RAID 5 is the most recommended RAID setup for multiple-drive storage devices, since it balances performance and storage space while still offering protection against single hard-drive failure.

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The Pegasus R4 also supports RAID 0, 1, 50, 6, 60, and 10. It comes with WebPAM PROe software for Windows and Pegasus Utilities for Mac. You can use either program to manage the drive, including changing its RAID setup, viewing the status of each hard drive, and so on. In my testing, the R4 took a very short time to change from one RAID to another, just a matter of minutes. I did find that WebPAM PROe could only be used to manage the Pegasus drive that was directly connected to the computer and not the others in a daisy-chain setup. Pegasus Utilities, however, can manage multiple daisy-chained Pegasus units at a time. This is not a big deal, however, since most of us wouldn't be able to afford more than one unit anyway. Also, Promise says it will soon fix this with a new version of the WebPAM PROe software.

California-based Promise Technology Inc. has announced new internal storage options that are custom designed for the upcoming 2019 Mac Pro. The Promise Pegasus R4i and Promise Pegasus J2i allow users to manage unstructured data and digital assets that are critical to creative projects.

The Promise Pegasus R4i offers four-bay PCIe RAID storage in a rugged chassis designed to complement Apple's new device. It offers four swappable modules with 8TB 7200 RPM SATA HDDs pre-formatted and pre-installed. The best-in-class Pegasus hardware RAID5 provides an optimal combination of performance, capacity, and redundancy.

The Promise Pegasus J2i, meanwhile, offers two bays with one 8TB 7200 RPM SATA HDD pre-formatted and pre-installed. Customers can use the second bay for an optional additional HDD.

According to Edward Lin, Chairman, Promise Technology:

The Pegasus R4i and Pegasus J2i are ideal, reliable high-capacity storage options inside the Mac Pro. The well-recognized Promise Pegasus family remains the gold standard for creative professionals and pro-sumers needing storage for the best speed, protection and capacities, backed by solid warranties and outstanding global support.

Co-designed by Apple, both devices come with a three-year warranty that's supported by Promise.

Announced at this year's Worldwide Developers Conference (WWDC), the 2019 Mac Pro is packed with hardware updates including new Intel Xeon processor, with support for up to 28 cores. The 2019 Mac Pro was announced alongside the Pro Display XDR, a new 6K display aimed at taking on expensive reference monitors.

Promise Technology Pegasus Manual Mac Mini

Designed for maximum performance, customization, and expansion, the new Mac Pro also features a high-performance memory system with a 1.5TB capacity, eight PCIe expansion slots, and a graphics architecture featuring what Apple calls the world's most powerful graphics card. It also introduces Apple Afterburner, an accelerator card that enables playback of three streams of 8K ProRes RAW video simultaneously. With Apple Afterburner, you can work natively with 4K and 8K files from the start. In other words, no more transcoding, storage overhead, or errors during output.

The Promise Pegasus R4i and Promise Pegasus J2i will be available later this year for purchase at Apple retail stores and Apple Premium Resellers and through the Promise global network of distributors and value-added resellers. Prices have not yet been announced. The Mac Pro and Pro Display XDR also arrive later this year, starting at $5,999 and $4,999, respectively.