# SM22BU31C1R RAID 1 for use with Windows AND Mac

**URL:** <https://community.startech.com/t/sm22bu31c1r-raid-1-for-use-with-windows-and-mac/1395>\
**Category:** Cards, Drive Accessories, Tools\
**Created:** [November 16, 2024, 12:30pm UTC](https://community.startech.com/t/sm22bu31c1r-raid-1-for-use-with-windows-and-mac/1395 "2024-11-16T12:30:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Nikolaus](https://avatars.discourse-cdn.com/v4/letter/n/ac8455/32.png) [@Nikolaus](https://community.startech.com/u/Nikolaus)\
**Post date:** [November 16, 2024, 12:30pm UTC](https://community.startech.com/t/sm22bu31c1r-raid-1-for-use-with-windows-and-mac/1395/1 "2024-11-16T12:30:23Z")

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two Transcend TS2TMTS970T in a SM22BU31C1R  
Disk LEDs light up for one second then blink 5 times and go out  
DIP switches set to On/Off/On → RAID 1  
Disks can be partitioned with compmgmt.msc and formatted as exFAT but show up as two disks in Windows explorer.  
How to set them up as RAID 1 for use with Mac and Windows?  
If I configure them as mirrored drive I can only format as NTFS which cannot be written to by Mac  
How do I set up the device so that it uses both TS2TMTS970T in a RAID 1?  
Thank You for halp  
Nikolaus

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**Author:** ![AdamS](https://yyz2.discourse-cdn.com/flex012/user_avatar/community.startech.com/adams/32/22_2.png) [@AdamS](https://community.startech.com/u/AdamS)\
**Post date:** [November 18, 2024, 9:43pm UTC](https://community.startech.com/t/sm22bu31c1r-raid-1-for-use-with-windows-and-mac/1395/2 "2024-11-18T21:43:54Z")

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Hello @Nikolaus and thank you for posting on the [StarTech.com](http://StarTech.com) Community!

I am sorry to hear about these issues you are having with our product. Based on the description, I would highly suggest reaching out to one of our Technical Advisors for some live troubleshooting using the Live Chat feature available on our website. This will result in much more efficient troubleshooting being able to do some live testing on the spot! We look forward to hearing from you!

Adam S.

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**Author:** ![Nikolaus](https://avatars.discourse-cdn.com/v4/letter/n/ac8455/32.png) [@Nikolaus](https://community.startech.com/u/Nikolaus)\
**Post date:** [November 19, 2024, 10:33am UTC](https://community.startech.com/t/sm22bu31c1r-raid-1-for-use-with-windows-and-mac/1395/3 "2024-11-19T10:33:57Z")

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Hello @AdamS  
I think I solved the problem by boldly pressing the **undocumented pushbutton** on the circuit board while it was was outside the case and powered on.  
This seems to have resetted the RAID controller so the two disks are now presented as one in the Windows compmgmt.msc and could be formatted as exFAT  
greetings  
Nikolaus

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**Author:** ![AdamS](https://yyz2.discourse-cdn.com/flex012/user_avatar/community.startech.com/adams/32/22_2.png) [@AdamS](https://community.startech.com/u/AdamS)\
**Post date:** [November 19, 2024, 1:36pm UTC](https://community.startech.com/t/sm22bu31c1r-raid-1-for-use-with-windows-and-mac/1395/4 "2024-11-19T13:36:58Z")

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I am very glad to hear you were able to resolve this and is working with the exFAT filesystem!

Yes, the procedure for properly setting the RAID mode for the [SM22BU31C3R](https://www.startech.com/en-us/hdd/sm22bu31c3r) is described in the Quick Start guide for the product here: [https://sgcdn.startech.com/005329/media/sets/SM22BU31C3R\_Manual/SM22BU31C3R\_dual-slot\_enclosure\_start\_guide.pdf](https://sgcdn.startech.com/005329/media/sets/SM22BU31C3R_Manual/SM22BU31C3R_dual-slot_enclosure_start_guide.pdf)

This describes the dip switch settings as well as the RAID set button used to initiate the specific RAID mode selected.

Adam S.