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585 | 
| Will Bluetooth and Wi-Fi work when a Mac mini is racked in a RackMac mini and DuoModo xMac mini Module? | Nov-04-21 |
| Yes, both may work, conditionally. The Bluetooth and wireless antennas are exposed in the rear of the RackMac mini and DuoModo xMac mini Module. However, the steel chassis may prevent effective use. If you don't get adequate reception, then you can put the Sonnet USB Bluetooth or Edimax Wi-Fi dongle into the front USB port (or rear USB port with extender cable) to get functionality.
For Blutooth reception, use the Sonnet USB-BT4 Long-Range USB Bluetooth 4.0 Micro Adapter.
To use the Sonnet external Bluetooth 4.0 adapter on macOS:
1. Open Bluetooth System Preferences
2. Unpair all bluetooth devices from the internal bluetooth.
3. Check "Show Bluetooth in menu bar"
4. Option-click Bluetooth in menu bar, and note the internal Bluetooth address
5. Turn Bluetooth off and wait 5 seconds
6. Plug in the Bluetooth adapter and wait 5 seconds
7. Turn Bluetooth on.
8. Option-click Bluetooth in menu bar to comfirm that the Bluetooth address has changed to the external Bluetooth adapter
9. Pair your Bluetooth devices
10. To make the selection permanent, in Terminal, enter sudo nvram bluetoothHostControllerSwitchBehavior=always
To restore the setting to use internal Bluetooth, enter sudo nvram bluetoothHostControllerSwitchBehavior=never
11. M1 Mac minis hide the USB ports behind the T2 security chip, so you must unplug and plug in the USB Bluetooth adapter after every boot. It is not necessary to do this on Intel Mac minis.
For better Wi-Fi reception, some customers have used the Edimax EW-7822ULC external USB 2.0 wi-fi adapter, or the faster Edimax EW-7822UTC external USB 3.0 wi-fi adapter.
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1073 |
| How do I configure RAID under macOS? | Feb-14-23 |
| Create a disk set using Disk Utility on macOS
1. You can create a Redundant Array of Independent SSDs (RAID) set to optimize storage performance, or increase reliability in case of a SSD failure. You can also create a set that concatenates smaller SSDs to act as one larger SSD.
2. In the Disk Utility app on your Mac, choose File Menu -> RAID Assistant.
3. Select a Set type:
• Striped (RAID 0) Set: A striped RAID set can speed up access to your data. You can't create a RAID set on a startup SSD; you must start up your computer from a single SSD.
• Mirrored (RAID 1) Set: Protect your data against hardware failure with a mirrored RAID set. When you create a mirrored RAID set, your data is written to multiple SSDs so the information is stored redundantly. You can't create a RAID set on a startup SSD; you must start up your computer from a single SSD.
• Concatenated Set: Increase storage space with a concatenated SSD set. If you need one large SSD, but you have several smaller SSDs, you can create a concatenated SSD set to use as one large SSD.
4. Select the checkboxes of the SSDs you want to include in the set.
5. For each SSD, click the pop-up menu in the Role column and choose "RAID slice" or "Spare" to designate the disk as a standard member or spare in the set, then click Next.
6. Enter a name for the RAID set in the RAID Name field.
7. Click the Format pop-up menu, then choose a volume format that you want for all the disks in the set. (See File system formats available in Disk Utility.)
8. Click the "Chunk size" pop-up menu, then choose a disk chunk size that you want used for all the disks.
When you create a striped set, chunks of data from the same file are distributed across the SSDs. Ideally, you want data distributed across SSDs evenly and at an optimum size so that it can be efficiently accessed. If you want high data throughput from your set, choose a smaller chunk size so that data is spread across the drives and one drive can be accessing data while another is seeking the next chunk. With mirrored disk sets, choose a chunk size that matches the data you are accessing. For example, when working with video files, your Mac is accessing large chunks of data, whereas when using a database of many small records, your disks may be accessing smaller chunks of information.
9. If you are creating a mirrored RAID set, select the "Automatically rebuild" checkbox to allow the set to be automatically rebuilt when member disks are reconnected.
10. Click Create.
11. Click Done. |
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1077 | 
| Programming SSDs to 4k Block Size for Compatibility With macOS 10.13.6 | Feb-08-23 |
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1122 |
| Thunderbolt 3 NVMe volumes may experience a stop error under Windows 10 version 20H2 | Feb-14-23 |
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