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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17
votes
2answers
11k views

Why doesn't FileVault work on a RAID volume?

At work, I said to my colleague that it was not possible to enable Filevault on a RAID volume. He was surprised and asked me the technical reason. So I would like to know. It's strange because ...
7
votes
3answers
17k views

Replace a failed disk in a Disk Utility RAID 1

I have LaCie 2big thunderbolt 2-disk device configured as a RAID1 from Disk Utility. One of the drives appears as "failed", so I unmounted the raid, replaced the drive and plugged it all back in. Now ...
5
votes
1answer
511 views

Can I convert a RAID 0 set to a RAID 5 set?

Can I convert a RAID 0 set to a RAID 5 set in a Mac Pro? I currently have two 500GB drives in a RAID 0 set. I want to add a third drive and convert it to a RAID 5 set. Is it possible to do this ...
5
votes
1answer
2k views

Can I Mount a Hard Drive in Mac Pro Tower as Read Only?

I'm trying to recover data from a failed external Fantom RAID Drive enclosure by plugging the drives into a Mac Pro tower, but I'm concerned that OS X might write to the disks and jeopardize the RAID ...
4
votes
6answers
3k views

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 ...
4
votes
4answers
4k views

Why does RAID 1 “Mirroring not provide performance improvements”?

I have always used Software RAIDs, either Apple-provided, or via SoftRAID, etc. I am about to re-zhuzh my arrays and decided to do a little research beforehand… and On Apple's site, there is a ...
4
votes
2answers
1k views

With Mac Pro, is software RAID 0 worth it?

Does anyone have any reason to believe RAID 0 is any faster than independent drives on a Mac Pro? I have always run my Mac Pro with all five drives in RAID 0. I recently decided to try out Bootcamp ...
4
votes
0answers
257 views

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 ...
3
votes
2answers
501 views

Apple Time Machine, Drobo and studio computer [closed]

I bought an Apple Time Machine. I have a home studio with several hard drives. I'm trying to find the best way to setup Time Machine to keep all my storage backed up all the time. Studio Computer (...
3
votes
2answers
389 views

Setting Up Raid iMac

I have one lacie 2big thunderbolt 4th unit setup as raid 1. I want to add a lacie 2big thunderbolt 4th unit. How do I get it set up so the entire unit 1 is mirrored onto unit 2(Raid1)?
3
votes
2answers
2k views

Make SCSI Appear as Internal Hard Drive

I have the HighPoint RocketRAID 2720SGL Raid card running on my Mac and it shows as an external drive. I would like to make it appear as an internal drive. Is this possible? From: To: Here is ...
3
votes
1answer
8k views

Which SSD Thunderbolt Product For Main Boot Drive for my iMac?

So I have a 2012 iMac. I got the base model 21.5" which means I have a painfully slow 5400 RPM hard drive. The pure SSD option would have cost $1,300 ($1 more than the $1,299 base price) if I could ...
3
votes
2answers
117 views

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 ...
3
votes
2answers
455 views

Can I setup a single Sparsebundle in RAID 1?

My goal is the following: use my iMac as a TimeMachine Server (under OS X Lion Server) to backup my MBP via the network. What I did is to choose, in the TimeMachine Server configuration, the internal ...
3
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0answers
3k views

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 ...
3
votes
1answer
1k views

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 ...
3
votes
0answers
428 views

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 ...
2
votes
2answers
1k views

RAID 0 setup does not contain full disk space from slices

I just setup a striped RAID 0 on my 2012 MacBook Pro with two SSDs. One drive is 256 GB and the other is 500 GB, but my RAID disk is only 510 GB. Disk2 is my RAID disk, with disk0 and disk1 being ...
2
votes
1answer
274 views

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 ...
2
votes
1answer
481 views

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?
2
votes
1answer
624 views

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 ...
2
votes
2answers
2k views

How can I mirror two macbooks [duplicate]

I have two macbooks. I want them to be exact copies. They have different CPUs, RAM, but they have the exact same drives. I work on both of them. I never work on them simultaneously. Can I setup ...
2
votes
2answers
1k views

When creating a RAID 1 mirror set, do you need to have both disks available or can one be added later?

I'm planning my transition to Mac OS and I have a pair of mirrored drives I would like to move to my future computer. Since they are currently formatted as NTFS they will need to be reformatted during ...
2
votes
1answer
1k views

How do I remove everything Parallels?

Background: Mac Pro 4.1 circa 2009, specs: OS X El Capitan Version 10.11.3 (just updated last weekend) SN - H09440CK20H 2 - 2.93 GHz Quad-core Intel Xenon processors 32 GB RAM 2 - 1 TB HD 1 - ...
2
votes
1answer
289 views

Can I install/upgrade from SL to Lion on RAID0?

I have a 2007 Mac Pro with a 3-disk RAID0 bootdrive. I want to do a clean Lion install on the RAID volume but I'm not sure if there are any known issues with doing this. I seem to remember that last ...
2
votes
1answer
600 views

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 /...
2
votes
1answer
7k views

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 ...
2
votes
2answers
3k views

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 ...
2
votes
1answer
1k views

VMware ESXi compatible RAID card for the Mac Pro

I have a 2009 Mac Pro that I'd like to add a hardware RAID card to. I am running VMware ESXi with various OSes running as VMs. The Apple RAID card is not what I'm looking for. I would also like to ...
2
votes
1answer
353 views

Should I use raid 0 with my optibay drive?

I installed a 120gb SSD today. My optibay currently holds my MBP stock drive (5400 RPM HD 320GB). Since they have different memory sizes, should I put them in raid 0? The only reason why I want raid 0 ...
2
votes
2answers
845 views

Bootcamp won't run on OSX in RAID0

I have my MacPro booting into Lion off a 3 disk (software) RAID 0 array. I want to dedicate a fourth drive to Windows 7 via Bootcamp. However it won't run at all on my system, exiting with a 'RAID is ...
2
votes
0answers
23 views

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 ...
2
votes
0answers
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.)...
2
votes
4answers
279 views

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 ...
2
votes
0answers
198 views

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 ...
1
vote
2answers
1k views

Any Hard drive Mirroring or Software Raid or Sync tools on the Mac that are free?

I am trying to mirror a hard drive that is 3TB on the PC using SyncToy from Microsoft's PowerToys (as a backup method). But Mac is usually better for indexing and content searching, but is there ...
1
vote
2answers
1k views

Simple Low-Cost Network Backup System - Drobo? Alternatives?

I'm hoping to graduate from manually copying important files to multiple external desk or portable drives; affordably. We have 3 Macs and an iPad or two. I have just now learned about Drobo, who as I ...
1
vote
3answers
151 views

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 ...
1
vote
2answers
188 views

RAID 0 and 1 combo?

If I understand correctly, RAID 1 is two drive that mirror each other, and if one fails, it can be replaced and some hours later, it's a mirror of the good drive. Raid 0 combines 2 drives in a way ...
1
vote
1answer
795 views

Recoverability with HFS Plus following removal of a disk from RAID 0 hardware or software

A theoretical question (I do not have spare hardware to test for this). Scenarios If RAID 0 is used (no redundancy of data) with HFS Plus, and if a disk within the array is disconnected for a while ...
1
vote
2answers
2k views

How to convert an exiting partition to RAID on OS X?

I just replaced my optic drive from MacBook Pro with another 500gb HDD and I want to speedup one of the partitions. The first drive has two partitions, named 106 and 107 and I want to convert one of ...
1
vote
2answers
37 views

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 ...
1
vote
3answers
589 views

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 ...
1
vote
1answer
71 views

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?
1
vote
1answer
718 views

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 ...
1
vote
2answers
669 views

Swapping HDD RAID 1 with SSD in Mac Mini

I have a Mid 2011 Mac mini with 2x 500G HDD configured as RAID 1. Recently one of the HDD died. I planned to replace the dead HDD with a 500G SSD, and let the RAID 1 rebuild Is this a viable ...
1
vote
1answer
6k views

How Do I Partition A Raid 0 Using Disk Utility?

I have just purchased a WD My Passport Pro. It comes in a striped RAID 0 configuration comprising of two 2TB drives. I want to partition the drive into 3: Photoshop Cache Lightroom Catalogue Video ...
1
vote
1answer
169 views

Need solution for RAID from old Mac

I have an old Hackintosh which I no longer use, except as a server to access 2 RAIDs made of 6 disks. The machine is too big, uses too much power, makes too much noise, and generates too much heat to ...
1
vote
1answer
1k views

RAID 1 with a Mac - how to avoid formatting one of the drives

I have an iMac with an external 2TB HDD. I recently bought a second 2TB HDD in order to build a RAID 1 (mirrored) with the two drives. The problem is that Disk Utility forces me to create a new RAID ...
1
vote
1answer
2k views

Use two external hard drive docks to retrieve data from RAID 0 disks

Some while ago, I fried the power supply inside of my WD MyBook Pro Edition II, leaving the disks intact but rendering the enclosure itself totally useless. So now I have two 500GB 3.5" SATA drives, ...