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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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 to resizeVolume on appleRaid external mirror set?
I have the following appleRaid mirror set:-
$ diskUtil appleRaid list
AppleRAID sets (1 found)
===============================================================================
Name: ...
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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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How often should a RAID consistency check be done?
I have a LaCie 60TB RAID array. I've had it for a couple of years, but I am wondering how often I should do a "Consistency Check" on it. I don't know a whole lot about RAIDs. It's formatted ...
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How to determine wasted space by large chunk size on macOS RAID array?
Working on a system that was created with a macOS RAID array with 256k chunk size for the members. The drive was originally to be used for video and image editing and storage, but has now become a ...
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Two 4TB hard drives -- how can I create a RAID 1 with two 2TB partitions?
I have been struggling with trying to get Disk Utility to allow me to divide a 4TB HD into two 2TB partitions, and then have a mirrored raid of that for redundancy. Is this not possible?
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Raid 0 on two SSDs on Macbook pro Mid 2012 (non retina) running Catalina?
I am using Macbook pro-Mid 2012 (non-retina).
There are two SSDs, one 850 EVO (250 GB) and 860 Pro (256 GB).
Both have Catalina installed and running perfectly. I can switch easily using startup disk ...
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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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Lifespan of 2011 iMac
I have a 27" 2011 (i7 3.4ghz 24GB RAM) iMac that I just replaced the drives (1 SSD and 1HDD) in 2 years ago. It runs pretty well now, but is just starting to slow down (and pales in comparison to ...
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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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How to reclaim all the space on a NAS RAID drive for us as a regular Mac drive
I have just upgraded several hard drives on our Synology, and now have 2 bare metal drives of smaller capacity (6TB) that I'd like to reuse on my Mac for other purposes. However I can't seem to get ...
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Running Raid0 on MBP 2011
I have a higher end (i7, 2.5ghz, 16gb RAM) 2011 MBP with an older HDD that has been pretty unreliable for the last year or so. I have an unused/unopened 250bg SSD sitting on a shelf and was thinking ...
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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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RAID storage drive failed - what to do?
I have a macOS Server setup which is connected to two RAID (0, I think) systems. One of them does not work anymore.
Disk Utility shows that one drive is missing/damaged. It is not missing, thus it ...
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macOS Catalina renamed external volume name
I have an external APFS RAID 1 array made of three USB hard drives connected to my Mac Mini.
Before I installed Catalina (10.15) on my Mac Mini, this array was called "Primary" and was mounted as /...
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Raid set add member: com.apple.StorageKit error 118
I have a failed RAID set, and am trying to add a replacement drive. Every time I try to repair, add member, or add spare, it fails immediately with com.apple.StorageKit error 118. Does anyone know ...
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Adding a new hard drive to RAID1 software RAID fails
I've got a Mac Pro 1.1 running macOS Server 10.6.8 that I want to use as a RAID-Server. I use Disk Utility to run a RAID1 set with two 500GB hard drives.
Now adding a third 500GB hard drive to the ...
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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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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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Move SoftRAID to a new home
We have 3x4TB 3.5" HD's in RAID 5 (SoftRAID) in a 2012 MacPro tower.
Is it possible to physically remove them and insert them into a larger enclosure and it will continue operating?
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How to repair Raid 0 Via Terminal
I have 2 @ 4TB drives in an 8tb Raid 0 stripe enclosure that has become corrupted. I have tried to repair the volume via, disk utility, terminal and single user mode with no luck. All 3rd party ...
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Recovering a RAID 0 volume
In the process of upgrading a 2 4tb disk RAID 0 array from an iffy LaCie drive to a faster/more reliable USB enclosure I have lost data. The backups take a long, long time to restore so I'm hoping to ...
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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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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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How can a Mac split a single backup to two independent, external drives
I have been asked to perform an emergency backup of a device showing signs of HDD failure. I'm being provided with two individual external hard drives to accomplish this. Each drive is independently ...
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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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Terminal command to force-install Mac OS High Sierra onto a specified drive?
I'm wondering if there is a way to install Mac OS High Sierra using terminal onto a specified drive?
I'm working with a bit of a unique situation as I've been running Mac OS Sierra successfully in a ...
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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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How to create exFAT or NTFS RAID 1
I am looking for a way to create a RAID 1 Volume from macOS Sierra with a format that will be readable from both Mac and Linux.
Using DiskUtility I can not seem to find a way to format the RAID in ...
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RAID array creation in macOS
I have a LaCie 2big Thunderbolt 3 RAID drive. I'm currently using LaCie RAID Manager software to create RAID array.
I noticed that MacOS is recognizing the RAID volume as an external drive instead ...
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Time Machine restore stuck on “Preparing <destination disk>” for more than 24 hours, how can I diagnose the nature of the problem? [duplicate]
Recently I got myself into quite a pickle that eventually required I format my Mac’s dual-SSD RAID-0 array and restore from a Time Machine backup.
Unfortunately Time Machine has spent the past 24 ...
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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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How would I architecture Network Attached Storage?
This is a sequel (1, 2) question.
I'm interested in setting up a home networking solution. One or more individuals would be able to access their accounts from any one of multiple Macs around the ...
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Create a RAID 1 with only one disk?
I have a MacBook with an SSD, so space is limited.
I've been using a single external drive to store my overflow, but would feel a lot more comfortable if it was on a RAID 1. So, I've bought an 2 bay ...
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Is it possible to run OpenZFS on MacOS Sierra on a Mac Pro
I have a Mac Pro with a PCIe flash startup drive running MacOS Sierra. I would like to fill the 4 empty SATA HDD bays with drives and use OpenZFS to create a pool/volume.
Is this configuration ...
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I can not explain my disk usage
I have a RAID 5 solution with 4 disks of 2TB. That gives me 6TB disk space. Now Disk Utility tells me that my actual usage is 3,5TB and I have 2.5TB free space. But when I add up the disk usage of the ...
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Time Capsule & 3TB HDD Raid 1 setup
I have the Airport Time Capsule (3TB) connected to a 3TB HDD via the Airport Time Capsule's USB2 port.
How can I set them up with RAID 1?
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