In benchmarks with four spinning hard drives, this was doing regularly over 600MB/s attached to an iMac 2014 (when the drives are not full - all spinning drives slow down as you fill them up) with 5000rpm drives. We had it configured with 4x8TB drives from Seagate and Western Digital (drives not included), using RAID5 for redundancy in case of a drive failure.
This produced a 24TB volume for mount on the desktop. It could be split into smaller volumes if desired, or can be used as "just a bundle of individual disks" (JBOD), or in one of the other raid modes. This comes with a license code for Softraid XT for MacOS, so you can use it as a full RAID on the Mac. RAID 0, 1, 4, 5, 1+0. Or as a JBOD if you prefer.
Softraid is easy to use and set up, and is very fast. On the OWC website it says the unit is compatible with Windows, but I havent tested that. All four drive slots were tested with a 3TB drive immediately before this listing was made, attached to an iMac 2014 with Thunderbolt 2. The drive mounted and drive could be read for each slot.
It had been in storage for six months, so I made sure its working before sending it out. This is the FULL XT version, not LITE - license code is printed on a label on the bottom of the drive case. 13 L x 8.5D x 10 H (Original Box).9.5L x 5D x 7H (actual device). Let me know if you have questions. The item "OWC ThunderBay 4 RAID Thunderbolt 2 Enclosure withSoftraid XT RAID 0, 1, 4, 5" is in sale since Thursday, December 12, 2019. This item is in the category "Computers/Tablets & Networking\Drives, Storage & Blank Media\Hard Drives (HDD, SSD & NAS)\External Hard Disk Drives". The seller is "mcgdivablue" and is located in McCall, Idaho.
This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Egypt, French guiana, Guadeloupe, Iceland, Jordan, Cambodia, Cayman islands, Macao, Maldives, Oman, Pakistan, Paraguay, Uruguay, Russian federation.