Questions tagged [raid]
Redundant Array of Independent Disks, a scheme to utilize multiple hard drives to increase speed and reliability or to provide for data recovery in the event of hard drive failure
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Unable to mount or fix my Apple Raid mirrored volume
I have 2 identical external 2T disks, mirrored using diskutility.
Yesterday I realised that this volume was not mounted.
I started diskutility to see what was going on and it came up as a blank screen....
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Can’t change startup disk to be a RAID 0 disk
I just successfully merged two exact same size and model internal SSDs in my MacBook Pro mid-12 but now I am forced to run OS Catalina off of an external hard drive. I want to be able to run OS ...
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How to discover/choose RAID "Chunk Size"
question:
when using Disk Utility to create a RAID 0 of two external HHD's, it asks to choose a Chunk size. the options are: 16K, 32K, 64K, 128K, or 256K.
i would like to discover what another two ...
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Existing AFPS Time Machine, adding identical drive to create RAID1, possible to do without reformatting?
I did a lot of research already and it seems like this was definitely possible before AFPS (see http://hints.macworld.com/article.php?story=20041013121106176). The command diskutil appleRAID enable ...
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RAID failure notifications
I recently bought a Mac Mini to use as a NAS, among other things. I'm thinking about setting up a couple external drives as a RAID 1 (mirrored) set to help safeguard my data in case one of them goes ...
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How can I encrypt a Disk Utility RAID volume?
I have two SSDs in an external enclosure, exposed to the OS as independent drives. I want them to appear as a single encrypted APFS volume, with RAID 1 mirroring. I'd like to set up RAID via the ...
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RAID crash on Mac Studio
I have a Mobius 5C external 16TB USB-C RAID connected to a Mac Studio Ultra.
Whenever I try to copy anything to it I get an instant crash and then restart.
The RAID is formatted as HFS+ and I think ...
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Inaccessible external volume from Terminal
I've hit a bit of an odd issue with my TimeMachine/external storage backup solution. Do note that I set it up while Apple was changing filesystem management systems (CoreStorage vs APFS vs OS/Data ...
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Are there usability advantages to macOS's built-in RAID?
There is no need for external disk enclosures (whether NAS or not) to have RAID.
MacOS supports software-based RAID
(striped/mirrored/concatenated).
Of the two options (RAID in the OS or outside) I'd ...
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APFS RAID mirror - can it be done, and anyone have experience?
So I've moved most of the server functions off my trusty Mac Mini 2012, and am looking to set it back up as my desktop driver for the time being. When running macOS off external drives with none of ...
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How to keep external HDDs spinning (prevent spinning down) on macOS?
I’m using M1X MacBook Pro 16 inch (2021) running macOS Monterey 12.3.1 with 4-bay hardware RAID enclosure from QNAP (TR-004) holding four 10TB Toshiba HDDs. The enclosure spins down the HDDs soon ...
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Creating a "virtual" dir that wraps two (external) drives
I was wondering if MacOS Mojave (the most recent version I can be on due to some very expensive 32 bit applications) has a way to set up a "virtual" dir, or even virtual drive, that combines ...
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Is there a RAID type that combines Zero and One?
Both of my 16tb RAID 0 Time Machine drives failed simultaneously last week! Probably because they were both bought on the same day over 10 years ago.
In the hope of avoiding this crisis happening ...
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RAID drive over-full, bringing laptop to a crawl & crashing it, need to triage and delete files
I'm helping a friend try to restore functionality to his MacBook and LaCie 5big Thunderbolt 2 RAID array. He's been editing a film and over time the RAID device has filled completely up. I'm not sure ...
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RAID 5 options on macOS Big Sur?
I'm given to understand that Disk Utility in macOS Big Sur does not support RAID options other than RAID 0 and RAID 1. I've got a multi-drive enclosure that I'd like to setup for RAID 5. Are there ...
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