Redundant array of independent/inexpensive disks; a technology which utilizes multiple disks to provide increased reliability, performance, and/or redundancy. Can be implemented either in software or with a hardware controller.

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Need help choosing a storage configuration for a GIS workstation

I am currently building a workstation for a GIS friend. I feel comfortable choosing all of the other specs but would like help choosing what to do for the storage. Original thought was to choose a ...
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30 views

How to have SATA drives connected to an Intel RAID controller as removable drives

Hi: we have a Supermicro server with an Intel C600 series controller and we would like to use some of the ports and their disks as removable devices, to allow to copy media from one server to another. ...
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16 views

Install Ubuntu with PXELinux on Raid0 machine

I have built a server that give tha ability to install several Linux distro over the network. Everything works well but with Ubuntu 14.04. I used this guide : http://www.tecmint.com/add-ubuntu-to-...
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82 views

Size on disk way bigger than expected

I have read Why is there such a big difference between "Size" and "Size on disk"? but why is mine so different? My RAID5 is set at 128kb stripe, the volume is formatted at 64kb NTFS. I would expect ...
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17 views

Protecting Data/Storage With a Better Data/Backup System

I've been putting up upgrading my system for data/storage/backups and I really want to deal with this as soon as possible. My Current System: Apple Macbook Pro (OS and Applications External Hard ...
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19 views

Former RAID 0 HDD not recognized (WD Red WD10EFRX)

I've bought two HDD drives (WD Red WD10EFRX) 1TB each and configured them to work in RAID 0 (stripe) on computer with Gigabyte motherboard. After that, I've decided to use them separately on another ...
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55 views

Windows 10 software raid 1 swapping disks explained

I'm searching and researching for answers for days now with little success. I've setup a Windows 10 software raid 1 with 2 Adata 240gb SSD disks. I expected that when 1 drive fails the other would ...
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48 views

Do I need RAID array to use ssd caching?

I have a 500GB Hard disk and a 32GB SSD, both shows as drive in the system. I want to be able to use the 32GB Drive for SSD-caching, via Intel Rapid Storage Technology. My Elitebook 840 g1 bios show ...
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15 views

Having two different RAID configurations in a NAS

I am in the process of buying a new NAS and I am putting down some requirements in order to decide which brand / model suits me better. Generally I can say that I am using two 'types' of files ...
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16 views

Will restoring a VHD file to a RAID configuration work?

I had Windows 10 on a 2 SSD raid 0 a while back. I turned my OS into a VHD and then I erased the drives and installed Linux and just used the VHD on Linux when I needed something like ms office. ...
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71 views

Extending RAID 1 Array with different size disks

Please note the following setup is Centos 6.6. I have an existing RAID 1 setup using 2x480GB SSD's. I Just had two new 800GB SSD's installed into the server. The existing RAID 1 setup i want to ...
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39 views

Make fixed USB drives dynamic disk

So at the moment I'm trying to RAID0 a pair of USB sticks I have. They show up in Disk Manager as Fixed Disks because of some driver filtering and it allows me to create a new striped volume, but at ...
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83 views

Synology two-bay NAS with existing data?

I'm considering purchasing a NAS, a Synology DS216 (or perhaps a DS216j). I have 2x 2TB drives available; one is full of data; the other is blank. I want to use the NAS in a RAID-1 configuration, to ...
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17 views

Degraded RAID5 Array Won't Rebuild

I have a simple RAID5 array with 3 drives. One failed so I replaced it using a drive just slightly bigger. I used CTRL + I to go into the RAID configuration and it came up with a prompt to rebuild, I ...
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16 views

Raid 1 size issues

I have 2 Seagate ST2000DM001 2TB SATA III, running in RAID 1, but the drives are showing different usage sizes 1 = 1.02TB of 1.80TB, and the other 2= 1.29TB of 1.80TB, what would cause this?
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1answer
82 views

Two systems freezing up: probably a RAID/MB sata controller failure?

I have two systems with approximately the same age with similar trouble: First system: ASUS P8h67-m-le mother r3 version i7 2600 (3,4ghz) 8gb ram ddr 3 (2x4gb dual channel) RAID 1 via ...
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41 views

AMD RAID 5 not booting after Windows Server 2012 updates

I've recently been working to reconfigure my home server. I decided to setup a RAID 5 for my operating system and virtual machines using my Asus M5A97 R2.0 built in AMD RAID. I was able to setup the ...
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143 views

How do I format a single raid 5 hard drive?

I'd like to know how to format a single former raid 5 hard drive If I boot up without the other raid 5 drives then Windows doesn't see it; it doesn't appear in Disk Management, or whilst booted into ...
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1answer
59 views

RAID array and change PCI-e slot

I have Adaptec RAID card in a PCI-e slot with a working array. However I need to change the PCI-e slot. If I change slot it will destroy my array?
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38 views

Disable RAID in custom kernel?

I need a Gentoo 13 machine to test some software on the platform. I'm not a Gentoo regular, so I'm suffering their procedures. I noticed the kernel spends a couple of seconds booting due to RAID ...
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1answer
342 views

How many drives do I need for ZFS RAID-Z2?

How much storage would I need if I wanted to use RAID-Z2? I am building a home server that will run FreeNAS with a ZFS file system, and currently plan to install 3 3TB hard drives. Does RAID-Z2 ...
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20 views

HighPoint RocketStor 6414VS always has one blue light on

I recently replaced my SI3132r5 RAID with the HighPoint RocketStor 6414VS system. On the front of the HP enclosure, there is a green light and a blue light for each drive. The green shows continuity, ...
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107 views

Failover strategies for home server (RAID, gluster, etc.)

I have a Raspberry PI at home, running Raspian and some servers like Apache, MySQL and ssh. The Raspberry is directly connected (LAN) to the home router and to a 2TB external ext4-formatted hard drive....
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1answer
205 views

Acer Aspire S7-391: No bootable device

After fixing the motherboard of my Acer Aspire S7-391 i tried to boot it from the stock SSD. However, i get a screen which lists the details of RAID Volume and Physical Devices. The last line says "...
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87 views

Replacing H310 PERC controller with H710 on Dell T7600 Workstation

I have a Dell T7600 workstation running RAID 5 and the H310 PERC controller is throwing some errors. If I replace it, I'd like to upgrade it. If I replace it with the H710 (this is the only other ...
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37 views

Replace RAID disk on Supermicro X9SCL/X9SCM after SMART reporting CurrentPendingSector and OfflineUncorrectableSector

I have a Supermicro X9SCL/X9SCM with Ubuntu 14. It has 2 HARDWARE RAIDs (Intel SATA RAID Controller), and one disk of one raid is failing (of primary/boot partition). The SMART monitor is telling me ...
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25 views

Software or Hardware?

Hi guys i have a Server 2008 R2 thats a supermicro Duel Xeon 1366 box 12gb DDR3, that i use for file storage and WDS and little Vmware Workstation 12 stuff.. The issue am having its loaded with 2 ...
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51 views

List missing files on a degraded read-only btrfs mount

I have a btrfs filesystem spanning 3 drives. The metadata is using raid1 (mirroring), but the data is using single, so no mirroring or parity just spanning. For example: mkfs.btrfs -m raid1 -d single ...
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13 views

Which hard disk should I put on SATA3, the one with the OS or the one with applications?

I bought 2 new SSD disks to put in RAID0 on my desktop computer. While installing them, I found out I have only 2 SATA3 ports. So, I have to choose whether to put the SSD with Windows 10 on sata3 or ...
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41 views

RAID 0 random read speed did not scale with the number of disks

I did some RAID 0 performanace test On Dell PowerEdge 730xd.Info of the server is as follows: OS:CentOS 6.7 Memeory:32 GB RAID controller:PERC H730P Mini (Embedded) The command I used to test is ...
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24 views

Is mixing software RAID disks across SATA and eSATA going to have any issues?

I have two eSATA drives running successfully in a software RAID on CentOS. I would like to make this a three disk mirror RAID by adding the third drive from the internal SATA drive. Are there any ...
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1answer
150 views

SSD Cache/Buffer for HDD RAID

I have three 3TB 5400rpm HDD's running on RAID 5 in my Ubuntu server VM as my NAS. I recently just hooked up this NAS Server directly to my Desktop via 10GB Ethernet cards and fiber optic cable (...
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14 views

Configure Centos external raid drive on restart

I am using Centos 7 with an external file server attached. After determining the drive name with "fdisk -l" I edited the /etc/fstab file so that the drive can be mounted: # Add the file server /dev/...
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1answer
70 views

R900 with Discs larger than 4TB

My Hardware Dell PowerEdge R900 with LSI Logic / Symbios Logic MegaRAID SAS 1078 (rev 04) R900 Technical Specifications About Hard Drives it says maximum for 3.5” 2.0TB SATA. This is an older ...
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10 views

How to replace drive in RAID1 with SAS 6 Util without losing existing data?

The machine in question is an older Dell Precision T7400 which had 2 1TB drives configured as RAID1. When a problem was suspected with a drive, I entered the BIOS-level config utility (v6.14.10.10) ...
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40 views

Toshiba hard disk write rates don't seem to be ok

I bought every component of my computer independently, I have a Toshiba (500 GB, SATA III) hard disk. Every part of the PC is working fine, also, RAM usage is right and CPU usage is perfect. I was ...
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1answer
41 views

SSD failed, mdadm thinks the RAID0 array is fine

I have a RAID0 array created using mdadm in Debian. sdf is the drive that died. $ cat /proc/mdstat md4 : active raid0 sdf1[1] sde1[0] 468859904 blocks super 1.2 512k chunks $ mdadm --misc --...
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48 views

Windows 7 36TB RAID6 — “The system cannot find the file specified”

I am doing a RAID upgrade project, installing an 8x6TB (36TB effective size) RAID6 array using an Areca ARC-1222 controller, and then transferring data from an older 8x3TB (12TB effective size) RAID10 ...
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1answer
107 views

Is a RAID1 (mirror) with 2 x 4TB drives and ZFS (through freenas) okay?

I'm looking to create a freenas RAID1 using two 4TB drives. It's going to be my primary location for a generic backup location (use rsnapshot for local files and keeping computer dd'd images) and I'...
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42 views

Dual-booting OS with a shared RAID array

Hardware: ASRock H97M-ITX/ac motherboard Two 4TB hard drives One 120GB SSD So here's what I'm trying to do. I want to run my two hard drives in RAID 1 through the motherboard's hardware RAID, purely ...
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1answer
29 views

Raid 0 with mixed drives

I have following 7 physical drives When trying to create RAID0 It shows the total capacity as 237.2 instead of 365.2 So is there any RAID configuration where I can have a single volume spanning ...
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1answer
32 views

BIG/SPAN (RAID): How does it works here?

I have some questions about BIG/SPAN. In my question I will talk about two hard drives spanned together. How is the data spanned across the two drives? Will it span according to files or on byte ...
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1answer
52 views

Raid 0 - Secure format

I am getting ready to sell a Lacie Big 5 20tb drive and I wanted to make sure my files were gone securely before mailing. I formated the raid-0, then destroyed it, created a new raid, formatted again,...
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1answer
23 views

Windows 10 not reporting RAID correctly

I just installed 4 x Western Digital Red 6TB NAS HDD's into a Vantec HX4R enclosure and set the RAID to 5. The JMicron HW Raid Manager Software that came with the enclosure shows all 4 Disks 5588....
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43 views

Is it possible to create a RAID 1 Array with only one disk and add the second later?

I just bought my first NAS with two bays. Next thing which are missing are the hard disks. I wanted to buy WD RED 4TB WD40EFRX but these things are so expensive, that I could only afford one of them ...
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37 views

Will `tune2fs -E stride=X` have the same effect as `mkfs.ext4 -E stride=X`

The man tune2fs and man mkfs.ext4 state: stride=stride-size ... This mostly affects placement of filesystem metadata like bit‐maps at mke2fs(2) time to avoid placing them on a single ...
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1answer
56 views

Failure of 1 SSD in Raid-0 that was bootdrive stopping computer from booting

I've spent 4+ hours searching this site and Google for someone to have/address my issue, and have had no luck so far, so I was wondering if someone could help me. Thank you! My computer has 2 32 GB ...
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1answer
31 views

How do i prevent lilo from doing a disk scan?

I have gentoo installed using root on LVM on RAID5. I made a mistake when I set up lilo but the initrd created by genkernel caught it and allowed me to type in the correct root partition. I have ...
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2answers
148 views

Debian : Encrypted Raid 1 setup.

We have a Debian X64 server which has the following config. One single 512GB SSD, which has our OS and two 2.0TB HDD's which have data like attachments, etc. The two 2.0 TB drives are in RAID-1 ...
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45 views

Debian RAID drive size smaller than should be

Background So I am new to setting up a RAID, so bear with me. I have tried to set up a RAID 10 with 4 hard drives. I am using mdadm to achieve this. I have successfully made my raid as /dev/md0. I ...