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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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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How can a raid set be renamed
I wasn't paying attention, and now I have a raid with a name similar to that of the boot partition. I'd like to name rename the raid set to a name that reflects the partition name. E.g. If the file ...
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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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Mojave and RAID
Does anyone know if Mojave will support booting from RAID drives?
My MacPro 5,1 has RAID hard drives and two striped SSD's that boot into Sierra. I've been unable to update to High Sierra on this ...
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Raid two external hard-drives with read/write support on Windows & OS X
I have a USB 3 HDD enclosure that currently has two 1TB drives in it. I am looking at buying another external USB 3 HDD drive (not an enclosure). I am currently running the external enclosure with the ...
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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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Are RAID volumes compatible between OSes?
I have a RAID 1 (mirrored) volume made of 2 USB external drives which was created on macOS High Sierra and I wanted to check if I can plug these drives into another machine running an earlier version ...
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APFS on RAID: recommended course of action?
I recently upgraded my Mac Mini Server's dual SSDs and found myself needing to re-create the RAID-0 array from scratch. (I am running the mainline High Sierra 10.13.1 on a 6,2 MacMiniServer from 2012.)...
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Moving or creating Recovery Disk with dual internal SSD with RAID
I have removed my optical drive and installed a second SSD in its place.
To do this I partitioned the first SSD to hold macOS Sierra. The other partition was RAID0 with a second SSD. I seem to have ...
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How to use iostat with AppleRAID volume?
When I try iostat disk5, I get the error:
iostat: could not record 'disk5' for monitoring
Iostat works with my other drives, and with the individual disks which make up the RAID volume. How can I ...
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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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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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Problem upgrading Mac Pro to macOS High Sierra
I have macOS El Capitan on my Mac Pro and I am trying to update my Mac Pro to macOS High Sierra so I can update it to Mojave since Mojave requires to have at least macOS High Sierra. But when I run ...
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On MacOS 10.15.5, "About This Mac --> Storage" is not recognizing my RAID-1 drive correctly
I upgraded from El Capitan to Catalina 10.15.5 on a MacbookPro mid-2012 , the oldest HW that Catalina will run on. Then, I created a RAID-1 drive using 2 USB disks. "About This Mac --> Storage" is not ...
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Can a RAID be a Time Machine backup?
If I configure a large external drive as a RAID, can TimeMachine use it for backups?
I see it can use a Drobo, but can it use even a "home-brewed" RAID?
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How to suppress warning about unreadable disks?
I have a dual boot machine, High Sierra and Windows 10. I have 4 disks in a software RAID created in Windows. Every time I boot macOS, it warns me that these disks are unreadable and must be ...
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Mac Pro 5.1 (mid 2012 ) Fusion Drive (2 SSDs and 1 HDD)
I have 2 SSDs 160GB each and a 4TB Disk (all SATA) I was thinking to put them in Fusion Drive setup, will it work? how it will work?
which setup is recommended if possible? any speed benefits?
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Are there tweaks in Time Machine or VirtualBox by Oracle to make Time Machine better handle small files within a .vdi?
Within a very important VirtualBox, which was at the time approximately 400 Gigabytes, Time Machine is not backing many files inside this machine, for even several months, despite them being changed ...
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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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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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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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Computer Froze, Now Raid over iSCSI (APFS Format) is no longer mountable. GPT/MBR not present
I was exporting video in Premiere and the computer froze so I had to restart. Upon restarting, I noticed the raid drive I connect to over iSCSI was not showing up on my desktop. However, it appeared ...
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Check files on both HDDs on RAID 1 array
I just set up my LaCie 2big Thunderbolt as RAID 1 array. Is there a way I can look at both HDDs to confirm, that all my data is actually mirrored?
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Repurpose 2006 Mac Mini for Time Machine with external HDD
I have a Apple Mac mini "Core Duo" 1.66 from 2006 sitting around. I also have on order a CiT 3.5 inch USB 2.0 Dual SATA HDD Enclosure and was thinking of getting a WD Green 4TB Desktop Internal SATA ...
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Possible to mount a RAID1 pair over USB?
I have a pair of disks which I configured as RAID1 (mirrored) via Disk Utility on my Hackintosh.
I am now traveling, and took the disks with me, and want to mount them with my MacBook Pro using a USB ...
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