Tagged Questions

RAID stands for Redundant Array of Independent Disks, and is a technology which can provide increased reliability, performance, and/or redundancy by utilizing multiple hard drives simultaneously. RAID can be implemented in a computer via either a hardware or software controller.

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Shrink RAID by removing a disk?

I have a Synology NAS with 12 bays. Initially, we decided to allocate all 12 disks for a single RAID-6 volume, but now we would like to shrink the volume to use only 10 disks and assign two HDDs as ...
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Server drives gives input/output error when formatting in Fedora

I am at a total loss as to why this is happening. I have tried everything I can think of. I am trying to format a drive in Fedora to use in the server. Every time I try to format it I get a ...
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20 views

Would software RAID 1 be broken if I move both drives to a new PC?

Does a RAID 1 setup by software (win) break once you move both drives to another Win PC? Is there any way to bind the drives together so that the RAID setup stays, even after changing motherboard/cpu? ...
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AMD RAID controller sees drives & RAID 1; Windows & RAIDXpert don't

I've got two SSDs I'm trying to work in RAID 1 on a Gigabyte GA-990FXA-UD5. Here is the weird combination of all the different variables with a fairly ideal testing scenario (plenty of spare ...
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15 views

How to setup RAID for data and AHCI for OS

I just bought 4 hard drives containing 4 TB each which I hope to set up in a RAID 10 setup, giving an apparent continuous 8 TB hard drive that is backed up. I also have a 256 GB SSD and a 1TB Hard ...
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7 views

Add 2 HDD connected via USB to Synology DS211j using Raid 1

I have a Synology DS211j and 2 old 2TB S-ATA HDD. What I plan to do is to buy two cases for these two hard disk drives that allow for connecting the hard disks to my Synology using the USB port. I ...
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14 views

4-bay NAS write performance RAID 5 + SSD vs RAID 10

I am planning on buying a new NAS (QNAP TS-453 Pro) for my Home Office. The NAS has 4 HDD bays and supports SSD Caching. Hence, I was wondering which setup would probably be faster in terms of write ...
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21 views

Is it possible to clone previous boot disk to new imsm raid array?

A PC with a hard drive 750GB. The hard drive has one partition with Vista and several partitions with Ubuntu 14.04. I mainly work with Ubuntu but occasionaly I boot Vista. Recently, the drive's smart ...
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35 views

Recovering software raid

I have a 3-disk software raid 5. Two disk appear to have failed at the same time; their number of Events is the same, while other third disk's is higher. I have copied all three disks into new ...
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19 views

Bootable RAID1 instead of extra SATA drive

Here's the deal as a web developer I am total rookie in the hardware stuff, but since we make more money now and tried to experiment some stuff. I got this Raid1 (4 SAS Drives) and extra 3TB Sata ...
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34 views

Seagate st3000dm001-9yn1 smart attribute [b8]

Seagate st3000dm001-9yn1 smart attribute [b8] The status of this smart attribute is showing: failed b8 Unknown Attribute 99 30 30 FAILED Where can I find more info about the 'unknown' [b8] ...
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Mirror / backup laptop btrfs drive to sometimes connected external USB disk

I have a laptop with an internal drive using btrfs. There are several subvolumes and snapshots on here. I want a copy of this drive to be made periodically to an external USB disk of approximately the ...
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17 views

Can't boot from mirrored disk (software raid 1)

I make mirrored disk (software raid 1) on windows 7 and shut down my computer normally, but rebuild process not finished. And after that my computer can't start up, it hangs at "Verifying DMI pool ...
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12 views

Procedure for repairing degraded array with 3ware

I have a machine with a RAID-6 array made of 8 drives. The 3ware monitoring utility, tw_cli reports that one drive is degraded. So, I need to replace it. Online, I find these instructions on how to ...
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1answer
16 views

RAID 5 setup across SATA II/III

I have an ASUS P8Z77-V LK mobo with 4 SATA 3Gb/s and 2 SATA 6Gb/s. I'm considering purchasing 3 WD7500AZEX HDD's and putting them in a RAID 5 configuration. My question is, if I put the two ...
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21 views

Thunderbolt or USB 3 for a RAID? (drive speeds)

I am about to purchase a 4-disk enclosure to house a RAID10 volume. My question is, do I really need Thunderbolt, given that it's so much more expensive than USB3? This is my thinking, please let me ...
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Safe to blank MBR of a disk after adding it to an RAID1 array with mdadm?

I created a RAID1 array of two disks, /dev/sda and /dev/sdb, using mdadm. After several booting problems related to the BIOS and SATA/RAID controller of the board, I accidently created some new ...
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48 views

Which has faster read/write speeds an external hdd raid or external single ssd [closed]

I want to move data to an external hard drive AS FAST AS POSSIBLE and I was wondering whether it would be better to have 2 HDD (7200 rpm or higher 500GB each) in an enclosure running RAID 0 or a ...
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20 views

How do I resize software RAID partitions in Gparted Live?

I have a linux-RAID partion that I want to extend into empty space non-destructively. In Gparted it has a lock symbol and right clicking the partion brings up greyed out options. But on the Gparted ...
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68 views

How do I fix my RAID array after NVIDIA GeForce Experience mangled it?

Alright, so I decided to try upgrading my graphics card driver today. I believe my previous version was 331.40 for my NVIDIA GeForce 580. I also have a GeForce 9800 for PhysX. So I started about an ...
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How can I re-establish my RAID5 Array (Intel Rapid Storage)?

I had a RAID 5 array, but two of the drives dropped from the array. (While troubleshooting another issue ASUS suggested I update my MoBo BIOS, but neglected to tell me this would corrupt my RAID ...
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1answer
43 views

How to recover RAID0 lost after a upgrade to Windows 8.1

How can I recover software RAID 0 after formatting my primary OS drive? I had the same issue as this post : I was previously running Windows 7 on a machine that had 4 physical drives and 1 SSD for ...
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40 views

Repair windows 7 software RAID

Sorry that some of this is vague, I wasn't onsite when it happened and am preparing to go in tomorrow and try to fix things. We had a Windows 7 PC that had 2 disks in a software RAID configuration. ...
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1answer
37 views

Boot partition for Software RAID 1

According to this tutorial: http://edoceo.com/howto/mdadm-raid1 as well as the answer to this question, ...it is necessary to create a separate boot partition if you want to boot from a software ...
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1answer
40 views

Cloning HDDs from a hardware RAID array?

Is it possible to clone the individual disks of a hardware RAID to get a copy of the contained array? I have an Adaptec RAID controller. I put it offline, attached the RAID member HDDs to a regular ...
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1answer
29 views

How to proceed after creating software RAID 1 array on Linux

So, I've created a RAID 1 array using two 500 GB hard drives. I used a Linux Mint Boot Disk, and then used mdadm to create the RAID 1 array using 2 hard drives, each which has a single primary ...
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Software Raid 0 (4 disk) and Windows Upgrade

I have software raid 0 (4 disk 1TBX4) on windows 7 professional. I want setup new OS (Server 2012 R2) Is my data is lost if upgrade? Thanks for help.
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1answer
30 views

Intel RAID verification and repair

Intel has a web page that describes how its Rapid Storage Technology verifies and repairs RAID volumes. For RAID 1 and RAID 10, it does the following: Data on the mirror is compared to data on ...
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28 views

Setting up software RAID 1 on Linux

So I'm trying for the first time to create a software RAID 1 array and install Linux (Mint) on it. I've physically installed 2 500 GB SATA Seagate drives, and now I want to create a RAID 1 array. ...
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1answer
59 views

HDDs occasionally “click” and dump this error

Every once in a while, my HDDs (6 1TB drives in a Linux md RAID-6 array) make a brief "click" sound, and I get this from dmesg. I don't really have any clue how to start diagnose this, or even how ...
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Why RAID1 is resynching so long?

I have created RAID1 array of two identical empty partitions. Now it is saying: $ tail -f /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : ...
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1answer
23 views

Does RAID1 really protect me?

I have 2 drives mirroring each other. They are pluggable and occupying 2 SATA slots. Totally I have 5 SATA slots. Can I freely unplug RAID parts and then plug them back and have data intact? If not ...
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1answer
31 views

Intel Rapid Storage Technology RAID - what can you schedule?

I am about to get a new laptop and I am considering using the Intel firmware RAID to set up RAID-1. I am researching what features it has. I found the following screenshot of the Intel Rapid Storage ...
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1answer
27 views

How do I know if one of my RAID 1 drives died?

Lets say I have a few HDDs in a RAID 1 array. From where will I know that one of my HDDs is dead? Is there some kind of automatic alert system or do I have to check it manually? If I have to check it ...
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How to enter RAID config on ASUS P7P55-M motherboard?

This motherboard is said to support Intel Matrix Storage Technology Support RAID 0,1,0+1,5,10 https://www.asus.com/Motherboards/P7P55M/specifications/ I am not familiar with this technology. ...
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59 views

Windows 7 Installation - HP ProBook 650

I Recently bought a HP ProBook 650 with Windows 7 preinstalled. Now I want to do a clean install of Windows 7 with my own image, so not the recovery disks that where included in the box. It appears to ...
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1answer
33 views

BTRFS or LVM heterogeneous RAID

I'm entertaining creating a largish (3.5TB+) backup server for my family. I already own enough hardware, and I don't want to buy any more right now. The config I envision look like this: Two 1TB ...
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Drive Jumper Settings for Creating RAID 0 Disk Images

I have a RAID 0 array of four 250 GB Disks, which constituted a single (LaCie) 1 TB virtual drive. The power supply died, so I removed the physical drives from the enclosure. I will attempt to ...
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13 views

Windows software raid0 giving bad performance

I have two Samsung SSD's in RAID0 mode. I measured their sequential read/write speeds first in RAID0 Hardware and they give around 1000 mbps but then I used two disks in RAID0 software from within ...
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1answer
100 views

Why can't Windows Server 2008 R2 (during clean install) find ANY device drivers?

I am trying to get a fresh install of Windows Server 2008 R2 Standard (64-bit) onto a (somewhat dated) Dell PowerEdge 1800. I'm am using the bundled Adaptec CERC SATA1.5/6ch RAID controller, and have ...
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419 views

How many drives do I have?

This is the first time I ordered a dedicated server with 3 HDDs and I am quite confused. My limited knowledge tells me that /dev/sda /dev/sdb /dev/sdc are the 3 drives that I actually have. But, ...
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19 views

Raid Configuration lost After For Installing Windows/Formatting Hard Drive on reboot

My boss recently got a tower fujitsu server, I dont know the model because it is written in Chinese. I installed windows server 2012, activated hyper-v and even installed ubuntu as a VM and ...
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1answer
90 views

Laptop offers RAID option - how does that work?

I am in the market for a new laptop. I'm looking at the Dell M6800 and HP ZBook 17. Both of these laptops can be configured with a RAID 0/1/5 option. Is this hardware RAID or software RAID? I have ...
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23 views

Creating BIOS Raid on the Asus Z87M-Plus

I am trying to setup a BIOS RAID with 4 WD RED 2.0TB. SATA Mode is set to RAID Mode in the BIOS. During Boot I hit Ctrl+I to get to the RAID tool. Now comes the part whee I get stuck. I select ...
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1answer
40 views

RAID 10 “failure” after changing BIOS setting

I have been using a RAID10 setup for quite some time and today, after loading a saved BIOS configuration (for overclocking), it set my SATA mode to AHCI rather than RAID. I didn't notice this and ...
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1answer
182 views

Synology NAS station - how to mirror 2 HDD (Simple how-to)

I have a following problem with my Synology disk station: I had one small HDD in Synology Diskstation, so I removed it. I bought 2 new HDD with same capacity. I transferred backup from old disk to ...
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1answer
108 views

Btrfs raid level for large NAS (8+ 5tb disks)

I'm planning to build a new NAS to store a large amount of media (20tb+). I would like to use btrfs for both the NAS and the backup (might be a separate system, not sure yet) I want to use raid1 or ...
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1answer
39 views

I reinstalled ubuntu and now I don't see my RAID drive

I originally had a Ubuntu 12.04 system with RAID5 array that I built using mdadm. Due to issues with graphics drivers, the 12.04 system crashed and I had to reinstall the operating system. After ...
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38 views

PCI-Express RAID Controllers with TRIM Support

I've an AMD Athlon computer with Windows 7 and I'd like to set up an SSD Raid 0. Are there any PCIe RAID controllers with TRIM support available on the market? The only thing in this are that I've ...
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24 views

Multi-distro LINUX from grub2. LVM Vgs not detected

Having a very weird problem with LVM in linux earlyspace. My system runs with 4hdds. Three are sata and one is eide/pata (/dev/sdd). I'm using grub2 to manage several OS's (two debian, one ...