OWC Gemini 8.0TB Thunderbolt 3 Dock and Dual-Drive RAID Solution Thunderbolt 3 / SATA 6.0GB/s / USB 3.1 / GbE / DisplayPort Your Multitool for Digital Workflows With dual drive bays, and seven connectivity ports including an SD 4.0 card reader, the OWC Gemini is the do-it-all tool that will organize your digital life. You’ll have plenty of room to duplicate footage, create and manage archives, or render and process effects. Connect your favorite peripherals via USB ports. Ingest the day’s shoot or drone footage with the frontside reader. Configure to Your Unique Needs You can customize the Gemini to quickly adapt to project changes and help you stay ahead of deadlines. Install your choice of 2.5-inch or 3.5-inch HDDs or SSDs and even combine the speed of a SSD and with the cost-effective storage capacity of a HDD. With built-in hardware RAID, you have four drive set-up choices: Non-RAID to keep the drives as independent volumes RAID 1 (mirror) for backup reliability RAID 0 (stripe) for optimal performance and maximum speed or use Span to combine the drive capacities into one huge volume for extra-large storage capacities Done with the drives but need the connectivity? Just eject the RAID from your computer and the Gemini keeps you working smoothly. Full Stream Ahead The Gemini features a 1Gb Ethernet port to keep you connected at speeds that leave WiFi in the dust. A must-have for shared workflows and workspaces, Ethernet connectivity speeds up file transfers giving you an edge on your work in progress. Disconnect in One Click OWC Dock Ejector software safely disconnects drives in a single click. Designed by OWC hardware and software engineers, Dock Ejector ensures all data is written before disconnection, saving time and protecting against data loss. Use it to move quickly between workstations and get the most out of your OWC Dock. Learn more and download the OWC Dock Ejector.
OWC Gemini 8.0TB Thunderbolt 3 Dock and Dual-Drive RAID Solution Thunderbolt 3 / SATA 6.0GB/s / USB 3.1 / GbE / DisplayPort Your Multitool for Digital Workflows With dual drive bays, and seven connectivity ports including an SD 4.0 card reader, the OWC Gemini is the do-it-all tool that will organize your digital life. You’ll have plenty of room to duplicate footage, create and manage archives, or render and process effects. Connect your favorite peripherals via USB ports. Ingest the day’s shoot or drone footage with the frontside reader. Configure to Your Unique Needs You can customize the Gemini to quickly adapt to project changes and help you stay ahead of deadlines. Install your choice of 2.5-inch or 3.5-inch HDDs or SSDs and even combine the speed of a SSD and with the cost-effective storage capacity of a HDD. With built-in hardware RAID, you have four drive set-up choices: Non-RAID to keep the drives as independent volumes RAID 1 (mirror) for backup reliability RAID 0 (stripe) for optimal performance and maximum speed or use Span to combine the drive capacities into one huge volume for extra-large storage capacities Done with the drives but need the connectivity? Just eject the RAID from your computer and the Gemini keeps you working smoothly. Full Stream Ahead The Gemini features a 1Gb Ethernet port to keep you connected at speeds that leave WiFi in the dust. A must-have for shared workflows and workspaces, Ethernet connectivity speeds up file transfers giving you an edge on your work in progress. Disconnect in One Click OWC Dock Ejector software safely disconnects drives in a single click. Designed by OWC hardware and software engineers, Dock Ejector ensures all data is written before disconnection, saving time and protecting against data loss. Use it to move quickly between workstations and get the most out of your OWC Dock. Learn more and download the OWC Dock Ejector.
OWC Gemini 8.0TB Thunderbolt 3 Dock and Dual-Drive RAID Solution Thunderbolt 3 / SATA 6.0GB/s / USB 3.1 / GbE / DisplayPort Your Multitool for Digital Workflows With dual drive bays, and seven connectivity ports including an SD 4.0 card reader, the OWC Gemini is the do-it-all tool that will organize your digital life. You’ll have plenty of room to duplicate footage, create and manage archives, or render and process effects. Connect your favorite peripherals via USB ports. Ingest the day’s shoot or drone footage with the frontside reader. Configure to Your Unique Needs You can customize the Gemini to quickly adapt to project changes and help you stay ahead of deadlines. Install your choice of 2.5-inch or 3.5-inch HDDs or SSDs and even combine the speed of a SSD and with the cost-effective storage capacity of a HDD. With built-in hardware RAID, you have four drive set-up choices: Non-RAID to keep the drives as independent volumes RAID 1 (mirror) for backup reliability RAID 0 (stripe) for optimal performance and maximum speed or use Span to combine the drive capacities into one huge volume for extra-large storage capacities Done with the drives but need the connectivity? Just eject the RAID from your computer and the Gemini keeps you working smoothly. Full Stream Ahead The Gemini features a 1Gb Ethernet port to keep you connected at speeds that leave WiFi in the dust. A must-have for shared workflows and workspaces, Ethernet connectivity speeds up file transfers giving you an edge on your work in progress. Disconnect in One Click OWC Dock Ejector software safely disconnects drives in a single click. Designed by OWC hardware and software engineers, Dock Ejector ensures all data is written before disconnection, saving time and protecting against data loss. Use it to move quickly between workstations and get the most out of your OWC Dock. Learn more and download the OWC Dock Ejector.
OWC Gemini 8.0TB Thunderbolt 3 Dock and Dual-Drive RAID Solution Thunderbolt 3 / SATA 6.0GB/s / USB 3.1 / GbE / DisplayPort Your Multitool for Digital Workflows With dual drive bays, and seven connectivity ports including an SD 4.0 card reader, the OWC Gemini is the do-it-all tool that will organize your digital life. You’ll have plenty of room to duplicate footage, create and manage archives, or render and process effects. Connect your favorite peripherals via USB ports. Ingest the day’s shoot or drone footage with the frontside reader. Configure to Your Unique Needs You can customize the Gemini to quickly adapt to project changes and help you stay ahead of deadlines. Install your choice of 2.5-inch or 3.5-inch HDDs or SSDs and even combine the speed of a SSD and with the cost-effective storage capacity of a HDD. With built-in hardware RAID, you have four drive set-up choices: Non-RAID to keep the drives as independent volumes RAID 1 (mirror) for backup reliability RAID 0 (stripe) for optimal performance and maximum speed or use Span to combine the drive capacities into one huge volume for extra-large storage capacities Done with the drives but need the connectivity? Just eject the RAID from your computer and the Gemini keeps you working smoothly. Full Stream Ahead The Gemini features a 1Gb Ethernet port to keep you connected at speeds that leave WiFi in the dust. A must-have for shared workflows and workspaces, Ethernet connectivity speeds up file transfers giving you an edge on your work in progress. Disconnect in One Click OWC Dock Ejector software safely disconnects drives in a single click. Designed by OWC hardware and software engineers, Dock Ejector ensures all data is written before disconnection, saving time and protecting against data loss. Use it to move quickly between workstations and get the most out of your OWC Dock. Learn more and download the OWC Dock Ejector.
Last updated at 05/11/2026 01:23:19
8.0TB OWC Gemini - Thunderbolt 3 Dock and Dual-Drive RAID Solution
Delivery between 14–20 May $12
originally posted on macsales.com
After derping out and realizing that I took the Thunderbolt 3 to Thunderbolt 2 adapter but didn't have an actual thunderbolt 2 cable, I quickly moved from setting up my new Gemini with my M1 Macbook Air instead. The Gemini is meant to be a dock as well as an external storage drive and sports a variety of ports on the back so this may be a more natural fit. I was mainly looking for a two drive array that I could link to my aging Mac mini but that would be primed for my desktop getting an upgrade. Even though I don't need the dock features, the Gemini fits the bill. Accessing the inner chassis as as easy as removing two baby screws on the back and sliding the casing apart. I found two 4 TB Toshiba drives shipped in my 8 TB kit. Long term I'll probably replace these ... MoreAfter derping out and realizing that I took the Thunderbolt 3 to Thunderbolt 2 adapter but didn't have an actual thunderbolt 2 cable, I quickly moved from setting up my new Gemini with my M1 Macbook Air instead. The Gemini is meant to be a dock as well as an external storage drive and sports a variety of ports on the back so this may be a more natural fit. I was mainly looking for a two drive array that I could link to my aging Mac mini but that would be primed for my desktop getting an upgrade. Even though I don't need the dock features, the Gemini fits the bill. Accessing the inner chassis as as easy as removing two baby screws on the back and sliding the casing apart. I found two 4 TB Toshiba drives shipped in my 8 TB kit. Long term I'll probably replace these drives with something with redundancy. The RAID slider on the back is a snap and I quickly dialed to RAID 1. This lost me 4 TB of space but with the mirrored drives, I don't have to worry about a failure in one drive eating my data. The Gemini is surprisingly quiet, even when the old spinning hard drives are at work and it brings a tinge of nostalgia to hear the disc spinning in an age when everything is NVMe. The shell is surprisingly heavy but looks nice on a desk. I do wish that OWC would attempt to paint the shells to match Apple color schemes as its the one rogue black unit in my sea of silver aluminum but it is by no means an unattractive device. Overall, this is a great way for the casual home user to get a modest array that is not overly expensive, can be configured for data redundancy, and gives you the option of future expansion via replacing the existing drives with larger ones in the future. The device only has TB3 which puts it a bit out of date now that TB4 exists but the transfer speeds should still be fast enough for any home user. Enterprise users would no doubt want to look for a more proper dedicated TB4 array. If you need that thunderbolt 2 support, make sure you get the cables you need.
originally posted on macsales.com
The important part right here at the beginning: It was as loud as our white noise machine in our bedroom, which we like, but has its place and purposethat is not on the computer desk. Such a good idea and could nearly be perfect but for the fan noise, which is both constantand very much unacceptable. I was curious after reading some reviews how bad it could be, and thought, I'm sure it's fine... Nope, not a chance. The included cable would keep this bay on the desk and within ~2 feet away. I spent over $100 for a 2 meter (~6 foot) Apple brand Thunderbolt 3 cable, and still it was too close, too loud. With an open and wishful mindset, this was a total bust for me. I read some reviews that said "not good for audio work", but honestly, who could this be ok for? I'm ... MoreThe important part right here at the beginning: It was as loud as our white noise machine in our bedroom, which we like, but has its place and purposethat is not on the computer desk. Such a good idea and could nearly be perfect but for the fan noise, which is both constantand very much unacceptable. I was curious after reading some reviews how bad it could be, and thought, I'm sure it's fine... Nope, not a chance. The included cable would keep this bay on the desk and within ~2 feet away. I spent over $100 for a 2 meter (~6 foot) Apple brand Thunderbolt 3 cable, and still it was too close, too loud. With an open and wishful mindset, this was a total bust for me. I read some reviews that said "not good for audio work", but honestly, who could this be ok for? I'm almost certain that OWC knows this is a serious issue with an otherwise great concept, because they intentionally don't include the dB level of the fan in the product description, like they do for their other docks/bays. And to be sure, I'm a big supporter of OWC's. I'm only leaving this critical review to help others avoid the order/return process like I went through and to put some pressure on OWC to step up their game and release an improved version of this with a near-silent fan. I ended up returning this for the ThunderBay 4 Mini (they have two versions, the newer version is also Thunderbolt 3!) for the exact same price as this empty dock. I'll keep my eye on this, and if they re-release it, I'll likely take another swing on an improved one. But for now, this was a real misfire from a usually reliable company. This dock is so promising, with all its ports and slots, but that fan is a non-starter.
originally posted on macsales.com
Overall Im really happy with the Gemini. One note, as others have mentioned: it has no sound dampening at all. My Seagate Pro HD is unbearably loud to the point where I cant use it. Because of that, Im switching it out with an OWC SSD via the ShuttleOne. So if you are doing sound work / video, I would recommend *not* using a spinning disc drive.
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8.0TB OWC Gemini - Thunderbolt 3 Dock and Dual-Drive RAID Solution
Delivery between 14–20 May $12
After derping out and realizing that I took the Thunderbolt 3 to Thunderbolt 2 adapter but didn't have an actual thunderbolt 2 cable, I quickly moved from setting up my new Gemini with my M1 Macbook Air instead. The Gemini is meant to be a dock as well as an external storage drive and sports a variety of ports on the back so this may be a more natural fit. I was mainly looking for a two drive array that I could link to my aging Mac mini but that would be primed for my desktop getting an upgrade. Even though I don't need the dock features, the Gemini fits the bill. Accessing the inner chassis as as easy as removing two baby screws on the back and sliding the casing apart. I found two 4 TB Toshiba drives shipped in my 8 TB kit. Long term I'll probably replace these ... MoreAfter derping out and realizing that I took the Thunderbolt 3 to Thunderbolt 2 adapter but didn't have an actual thunderbolt 2 cable, I quickly moved from setting up my new Gemini with my M1 Macbook Air instead. The Gemini is meant to be a dock as well as an external storage drive and sports a variety of ports on the back so this may be a more natural fit. I was mainly looking for a two drive array that I could link to my aging Mac mini but that would be primed for my desktop getting an upgrade. Even though I don't need the dock features, the Gemini fits the bill. Accessing the inner chassis as as easy as removing two baby screws on the back and sliding the casing apart. I found two 4 TB Toshiba drives shipped in my 8 TB kit. Long term I'll probably replace these drives with something with redundancy. The RAID slider on the back is a snap and I quickly dialed to RAID 1. This lost me 4 TB of space but with the mirrored drives, I don't have to worry about a failure in one drive eating my data. The Gemini is surprisingly quiet, even when the old spinning hard drives are at work and it brings a tinge of nostalgia to hear the disc spinning in an age when everything is NVMe. The shell is surprisingly heavy but looks nice on a desk. I do wish that OWC would attempt to paint the shells to match Apple color schemes as its the one rogue black unit in my sea of silver aluminum but it is by no means an unattractive device. Overall, this is a great way for the casual home user to get a modest array that is not overly expensive, can be configured for data redundancy, and gives you the option of future expansion via replacing the existing drives with larger ones in the future. The device only has TB3 which puts it a bit out of date now that TB4 exists but the transfer speeds should still be fast enough for any home user. Enterprise users would no doubt want to look for a more proper dedicated TB4 array. If you need that thunderbolt 2 support, make sure you get the cables you need.
The important part right here at the beginning: It was as loud as our white noise machine in our bedroom, which we like, but has its place and purposethat is not on the computer desk. Such a good idea and could nearly be perfect but for the fan noise, which is both constantand very much unacceptable. I was curious after reading some reviews how bad it could be, and thought, I'm sure it's fine... Nope, not a chance. The included cable would keep this bay on the desk and within ~2 feet away. I spent over $100 for a 2 meter (~6 foot) Apple brand Thunderbolt 3 cable, and still it was too close, too loud. With an open and wishful mindset, this was a total bust for me. I read some reviews that said "not good for audio work", but honestly, who could this be ok for? I'm ... MoreThe important part right here at the beginning: It was as loud as our white noise machine in our bedroom, which we like, but has its place and purposethat is not on the computer desk. Such a good idea and could nearly be perfect but for the fan noise, which is both constantand very much unacceptable. I was curious after reading some reviews how bad it could be, and thought, I'm sure it's fine... Nope, not a chance. The included cable would keep this bay on the desk and within ~2 feet away. I spent over $100 for a 2 meter (~6 foot) Apple brand Thunderbolt 3 cable, and still it was too close, too loud. With an open and wishful mindset, this was a total bust for me. I read some reviews that said "not good for audio work", but honestly, who could this be ok for? I'm almost certain that OWC knows this is a serious issue with an otherwise great concept, because they intentionally don't include the dB level of the fan in the product description, like they do for their other docks/bays. And to be sure, I'm a big supporter of OWC's. I'm only leaving this critical review to help others avoid the order/return process like I went through and to put some pressure on OWC to step up their game and release an improved version of this with a near-silent fan. I ended up returning this for the ThunderBay 4 Mini (they have two versions, the newer version is also Thunderbolt 3!) for the exact same price as this empty dock. I'll keep my eye on this, and if they re-release it, I'll likely take another swing on an improved one. But for now, this was a real misfire from a usually reliable company. This dock is so promising, with all its ports and slots, but that fan is a non-starter.
Overall Im really happy with the Gemini. One note, as others have mentioned: it has no sound dampening at all. My Seagate Pro HD is unbearably loud to the point where I cant use it. Because of that, Im switching it out with an OWC SSD via the ShuttleOne. So if you are doing sound work / video, I would recommend *not* using a spinning disc drive.
I purchased this as a media server and clone in a dual 12TB (2x6TB) setup. I also needed a few extra ports and the SD card reader so this multi-purpose dual-drive and hub is an excellent workhorse. Yes, the fact can get a little whiny, but they al are for this much data and the necessary cooling. Performance has been rock solid. All said, though, it's a pity the SSD version does NOT transfer at TB3 speeds, not even close. For a hard drive model, this is fine, but for an SSD model, look elsewhere.
I purchased an open box Gemini with a bit of trepidation given the "hit" it's been taking regarding operational noise. I was pleasantly surprised how quiet it actually was. After installation, I was concerned the fan was defective (not running) because of my expectations. The fan was indeed running. I find it very quiet with the exception of hearing minor noise from the hard disk when accessing. I've had it operational now for a couple of weeks and so far, I love it.Doug T.
I bought it to replace an 18TB WD data drive. Using on with a MacBook Pro M1 Max. I bought it bare bones and added 2 Seagate Ironhorse Pro 16TB drives. I configured it as RAID 0 (for speed and capacity).First, areas for improvement (and thankfully, not many!- It's a bit chirpy. Definitely could improve the sound dampening. Not totally obnoxious but works best if you can locate it with a bit of distance from you. Could be an issue with serious audio editorsNow, the good:- Easy to install drives and configure. As I mentioned above, I configured it RAID 0 (16TB x 2). And yes, I run frequent backups. I do a lot of video editing so I wanted the speed and capacity.- It's fast. I connect via Thunderbolt 3; getting about 511 MBPS on Blackmagic Disk Speed Test.- ... MoreI bought it to replace an 18TB WD data drive. Using on with a MacBook Pro M1 Max. I bought it bare bones and added 2 Seagate Ironhorse Pro 16TB drives. I configured it as RAID 0 (for speed and capacity).First, areas for improvement (and thankfully, not many!- It's a bit chirpy. Definitely could improve the sound dampening. Not totally obnoxious but works best if you can locate it with a bit of distance from you. Could be an issue with serious audio editorsNow, the good:- Easy to install drives and configure. As I mentioned above, I configured it RAID 0 (16TB x 2). And yes, I run frequent backups. I do a lot of video editing so I wanted the speed and capacity.- It's fast. I connect via Thunderbolt 3; getting about 511 MBPS on Blackmagic Disk Speed Test.- Great capacity; can be configured currently up to 20TB x 2 (40TB capacity!)- Ports. Always nice to have expansion ports built in. I probably won't be using them too much because I'm also using a CalDigit dock. But I could see this being your main dock if the ports satisfy your needs.- Egonomics and looks are great. Fairly small footprint and looks great on the desk.I could see the Gemini being useful for a lot of situations where you want a lot of storage in a DAS. NAS's are great but they do have a level of overhead to manage and there are always the speed issues. I'm probably going to get another one to replace a Drobo - which is currently my main storage bucket for my Plex server (on a Windows box.) Drobo was great in their day. But...
I have three other hard drives that are identical to this one, but this is far louder for somer reason. I am an editor and switched over from a project I was editing on an SSD and the hard drive is unable to keep up and is dropping frames. Maybe not the hard drive's fault for being slower than an SSD but might be good to know for video editors. It's so much louder that I am considering building something beneath my desk to contain the noise. Not super happy with the purchase which is too bad because all of my other geminis have worked pretty well.
This drive is amazing for the price. I have the 28tb version and for OWC reliability $1K for that much storage is a deal. It does have a fan and the fan does make noise, however, with almost 20 years of broadcast editing experience under my belt, I'll say this: the drive is no louder than ANY other pro standalone drive I've ever used. In fact is is quieter than the G-Speed Q's that I've used for years. If you are used to a perfectly quiet hermetically sealed room they yes, you're going to hear this drive. If you are used to a normal busy media work environment where most things make noise, then you will not be bothered in the slightest by the fan sound. One more note, this drive is esp cool because its just small and portable enough to where I can take it to set and ... MoreThis drive is amazing for the price. I have the 28tb version and for OWC reliability $1K for that much storage is a deal. It does have a fan and the fan does make noise, however, with almost 20 years of broadcast editing experience under my belt, I'll say this: the drive is no louder than ANY other pro standalone drive I've ever used. In fact is is quieter than the G-Speed Q's that I've used for years. If you are used to a perfectly quiet hermetically sealed room they yes, you're going to hear this drive. If you are used to a normal busy media work environment where most things make noise, then you will not be bothered in the slightest by the fan sound. One more note, this drive is esp cool because its just small and portable enough to where I can take it to set and load cards directly onto it, saving the intermediate step of double copying when I need to. Thanks for a great product guys.
Nice piece of hardware with a good number of ports, flexible drive options and excellent build quality.Downside one is a loud fan; they did use Noctua brand fan, so it is a quality unit. A silicon gasket will help isolate the fan from the case; Noctua also offers an inline cable that will slow the fan speed down. The case is small enough the full speed 60mm of the fan is really not needed. Per support, any modification will void the warranty.Downside two, Display Port (DP) requires an "Active" adapter to make the display connection work when going to another type of display input, not sure if a DP to DP monitor will work. I know for sure DP to DVI-D will NOT work, support confined this. I did not see any notation on the product page about the need for Active ... MoreNice piece of hardware with a good number of ports, flexible drive options and excellent build quality.Downside one is a loud fan; they did use Noctua brand fan, so it is a quality unit. A silicon gasket will help isolate the fan from the case; Noctua also offers an inline cable that will slow the fan speed down. The case is small enough the full speed 60mm of the fan is really not needed. Per support, any modification will void the warranty.Downside two, Display Port (DP) requires an "Active" adapter to make the display connection work when going to another type of display input, not sure if a DP to DP monitor will work. I know for sure DP to DVI-D will NOT work, support confined this. I did not see any notation on the product page about the need for Active adapters, or will not work when going to DVI ports. Save yourself time a frustration, get with support to make sure the way you plan to use the DP output will work.Support is top notch, fast to respond and helpful.
The product description suggests that the enclosure would be 'whisper quiet', but then I guess it all depends on your definition of whisper. If you have a library full of people whispering at the same time, I guess it could be rather noisy too. I would not call it whisper quiet, but perhaps 'slow hair dryer' quiet. The fans are on *all the time*, there is no temperature sensor to cut off if the circuits are cool enough, and as a result I turn it off most of the time, only turning it on for backup or when I need to access data on one of the disks. Now I am wondering if I can find a long enough TB3 cable to really distance it from my machine, an M1 Mac Mini, which makes zero noise. Other than that, the enclosure works fine, I appreciate the TB3 connection to my Mac, ... MoreThe product description suggests that the enclosure would be 'whisper quiet', but then I guess it all depends on your definition of whisper. If you have a library full of people whispering at the same time, I guess it could be rather noisy too. I would not call it whisper quiet, but perhaps 'slow hair dryer' quiet. The fans are on *all the time*, there is no temperature sensor to cut off if the circuits are cool enough, and as a result I turn it off most of the time, only turning it on for backup or when I need to access data on one of the disks. Now I am wondering if I can find a long enough TB3 cable to really distance it from my machine, an M1 Mac Mini, which makes zero noise. Other than that, the enclosure works fine, I appreciate the TB3 connection to my Mac, it seems plenty fast although I am not a benchmark obsessed kind of person.
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