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

22 questions with no upvoted or accepted answers
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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 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 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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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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3k views

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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62 views

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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1answer
95 views

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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173 views

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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203 views

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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19 views

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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208 views

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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120 views

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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120 views

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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RAID member needs to be deleted, not showing up in terminal

The drive is 500 GB. Could it be anything besides a messed up connector or something? I've tried multiple SATA connectors. I type diskutil list and get this: /dev/disk0 (internal, physical): #: ...
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8 views

Thunderbolt 3 raid 0 to thunderbolt 2 adaptor

I have an iMac 27” 2015 version with a 1tb fusion drive. My problem is that the fusion drive is slow and I get spinning beach balls all the time. Now my question is will a thunderbolt 3 raid 0 work ...
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415 views

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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229 views

howto encrypt “WD My Passport Pro” online? support.wdc.com with dangerous solution (no security)

I wish to encrypt my WD My Passport Pro drive. I receive error With Google I found An error message occurs when attempting to create an encrypted backup on a My Book Thunderbolt Duo in the Mac OSX ...
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272 views

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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408 views

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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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 ...