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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Best RAID Solution for dual boot?

I've seen this topic talked about before on this site but with other users using 2 drives for the active partition (booting from the same HDD thats got RAID) however my situation is a bit different. ...
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How to reconnect Raid drives

I'm running Windows 7 and had two 2T drives connected in a Mirrored Raid which showed as Drive E. Last week I noticed I have a new Drive G as well and on inspection, realized it was the mirrored E ...
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RAID 0 Volatile Volume Cache Mode configuration

I discovered that in IRST there is an option to set a cache mode for my 3 ssd raid 0 array. I've read the documentation by Intel and have some questions: Are there any overall benefits/risks from ...
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S.M.A.R.T. diagnostics recommends firmware upgrade

I have an Ubuntu server with a RAID-6 array. 3.13.0-27-generic #50-Ubuntu SMP Thu May 15 18:06:16 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux I was checking out the S.M.A.R.T. diagnostics for the ...
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Intel Rapid Storage Technology missing drives when trying to create a new volume

I had 2 non-bootable HDDs in a RAID 1 configuration through Intel Rapid Storage Technology. Recently IRST started giving out warnings about the S.M.A.R.T. data of one of the drives so I decided to ...
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37 views

Disable RAID Controller at BOOT and Partition Each Disk

I have some decent HP Proliants server that come with "HP Smart Array P410i Controller" enabled, I am using these boxes to set up a Hadoop cluster and I know, RAID is for sure a no-no for Hadoop since ...
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Would an array of SSD drives be able to succesfully substitute the system memory?

I watched a few videos trying to answer this. This video (youtube.com/watch?v=eULFf6F5Ri8) shows a bunch of guys stacking 24 SSD's reaching a peak of around 2GBps r/w. That's under the limit of the ...
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38 views

RAID 1 (mirroring) [closed]

I just bought a second HDD for backups, it is exactly the same model as the first one. Both drives are secondary, I have SSD for the system. My motherboard is an Asus Gryphon Z87. My questions: ...
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Running OS image from Dell Laptop (set to RAID mode) in VirtualBox [duplicate]

I have two SSD images from two different modern Dell laptops that use the new BIOS that allows you to set your boot mode to "legacy" and then set your SATA mode to AHCI or "Raid mode" (Intel Rapid ...
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37 views

Recover Hardware Raid Disk

I have an issue with a raid disk and I was not able to find a solution. I have an Asus Rampage IV Extreme with an Intel controller for raid. I was using 2TB disk in raid 1 with multiple partitions, 2 ...
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mdadm: Win7-install created a boot partition on one of my RAID6 drives. How to rebuild?

My problem happened when I attempted to install Windows 7 on it's own SSD. The Linux OS I used which has knowledge of the software RAID system is on a SSD that I disconnected prior to the install. ...
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52 views

Centos 6.4 Mounting RAID Drive

I already have 2 hdd on my dedicated and I just added 2 new RAID hdd on my current system. When I use hpacucli ctrl all show config command I can see my all drives like this: Smart Array P410 in ...
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37 views

Do SSDs have to have AHCI to maximize performance?

After my last post concerning my motherboard's RAID, I'm considering purchasing an additional dedicated RAID controller, but I have a few concerns about what to buy, because I'm facing yet another ...
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38 views

RAID Configuration 'seen' through

I have a RAID0 (striped) configuration with the following: 64GB SSD 128GB SSD 640GB HDD I'm turning my PC into a hackintosh, and the installer loaded properly, BUT The installer saw the ...
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1answer
24 views

Why is RAID rebuild/recovery tied to a specific RAID card?

I would assume that although the RAID specification itself does not detail the implementation, the manufacturer of the card would like to write the RAID implementation just once and reuse that in all ...
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59 views

At what point are hard drive bad sectors actually bad?

I'm kind of freaking out here, so I'm sorry if this question may be panicked. So, today, when I started my system up, I took a look at one of the drives in my Raid 0 setup. It showed 7 bad sectors. ...
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40 views

Can I move a RAID drive to another Sata port?

I currently have a Windows Server 2008 R2 machine with 4 x 1TB drives in software RAID5 controlled by WS 2K8. I am planning to upgrade to 4 x 3TB in the same software RAID5. Clearly 8 sata ports (9 ...
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105 views

No hard drive detected during Debian installation

I'm having problem in installing debian 7.5.0 on Supermicro server running on raid 1 whereby the hard drive is not detected. This server is running 2x 600GB hdd and i'm using DVD images of ...
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56 views

How to recover a 12TB RAID 10 array that's showing up as two uninitialized 6TB drives in Windows 7?

I have an ASUS Maximus VI Formula motherboard which was giving me trouble with it's USB 3.0 hub (Intel) so as part of the trouble shooting process I upgraded the BIOS to the latest. Big mistake, ...
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30 views

mdadm partiton not large enough to join array

I've used Linux on and off for the last many years, mainly as dual boot or as Virtual Machines, but when I decided to build a Dev Laptop I though I'd bite the bullet and put Linux on as the base OS. ...
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138 views

Reliability of 4 SSD in RAID 0 -vs.-SSD Boot+5440 HDD - in laptop

Question: What are the benefits of SDD RAID 0 over SDD boot with 5400 HDD? Goal: Decision between internal storage options Needs: Ability to seamlessly use multiple graphics and coding programs ...
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32 views

external raid 1 system basic questions

For my cubox-i I would like to have external RAID 1 system in order to have a reliable storage. Do RAID external systems work out-of-the-box or are any additional drivers required? Is there ...
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48 views

RAID terminology

In the most general sense what is an array and what is a group (also what's a virtual drive)? From here: Redundant array of independent disks (RAID) is a storage technology used to improve the ...
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When setting up RAID, what does the option “data protection” mean?

I'm setting up a RAID and it has the option "data protection". By default it's disabled but can be changed to enabled. I google searched and found this Data Protection: Use this item to enable or ...
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Adaptec Raid Controller 6405E slower than onboard raid?

Running on Windows 8.1 x64. Raid is 0 on two Samsung Evo SSD. Both read and write cache is enabled. Here's result from onboard raid (ASUS-P9X79-E-WS): And here's from the dedicated raid controller ...
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43 views

Can't read from the source file or disk on RAID 1 drive

I am getting the following error "Can't read from the source file or disk" when trying to copy a large file. I get the same error no mater what other drive I try to copy it to (which makes sense as ...
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42 views

Bios Raid and Windows that wants to format them

I shutdown my PC improperly by holding down the power button. Now Windows sees 2 HDD's with a RAW filesystem instead of my RAID. After the fast shutdown my raid went though the "Verify" stage with 0 ...
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27 views

How to detect RAID 0 from Ubuntu Live CD?

I have Ubuntu 10.04 installed on a server with RAID 0 configuration. The server has many user accounts and the users have a lot of data in the server. The server has been crashed due to removal of ...
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30 views

Automatic ESXi backups, is this possible?

Since ESXi does not support software RAID, the only option would be to use a hardware RAID controller. However, I would like to avoid buying one for a while, until I finally decide to keep using ESXi ...
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44 views

On-board RAID vs Hardware RAID

They technically are both "hardware" raids, but what really sets the two apart? Wouldn't on-board raid basically be a software raid since they share the same processor.
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Hardware RAID vs. Software RAID [duplicate]

What is the big difference between software RAID and hardware RAID at the low level? What is really going on that sets the two apart? As far as I know, the only difference is the RAID card can have ...
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71 views

Does windows 7 disk manager mirror disk or partitions?

My servers Raid 1 disappeared when I did a bios update, And now in order to get it back I have to format my 2 * 3tb hard drives. Which isnt really a solution for me. So I have desiced to try and make ...
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41 views

RAID5 vs RAID4 purpose of floating parity

I still did not get why is RAID5 better than RAID4. I understand both computes parity bits that are used for recovering if some failure occurs, the only difference is in storing those parity bits. I ...
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39 views

How to determine which drive in a firmware RAID is failing

I have two drives in an Intel ICH10 RAID 1. They are not enterprise-level drives; just regular WD Caviar Black drives. Recently, reading/writing to the mirrored volume has become extremely slow and ...
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127 views

How can I restore RAID 0 on my DELL laptop?

I have been formating my dell laptop for quite a while, I bought it back in 2012, with one year warranty, it ended last august, but I think since the moment I formatted it to windows 8.1 I probably ...
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150 views

HP ProLiant ML350e Gen8 - Ubuntu 14.04 LTS [closed]

I was researching about new Ubuntu Server 14.04 LTS and the Proliant ML350e Gen8 with B120i RAID controller and I found that HP certified Ubuntu without RAID engine on 12.04 server version, but now I ...
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gdisk doesn't recognize RAID0 disk as size of whole array?

I put in two Samsung 840s at 256GB and RAID-ed them together and installed Windows 8. I'm having trouble using gdisk to get ready to install Linux. gdisk sees the array, /dev/sda0, as a whole ...
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How does performance scale in a single column 2-way mirrored storage space as more disks are added?

In Windows 8.1 Storage Spaces, there seems to be pretty solid evidence that 2-way mirrored storage spaces have performance that improves significantly as more disks are added to the pool as long as ...
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linux - centos won't boot after rebuilding raid

I have a dedicated server with OVH. Yesterday they had to replace one of the HDD because it was about to fail. After replacing the disk, we had to rebuild the RAID and now the server won't boot ...
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Is it possible to build RAID0 or RAID1 using 2 disk when one disk is not cleen?

I'm using win 7.Is it possible to build RAID0 or RAID1 using 2 disk when one is not cleen? I have 2 same hdd disks, one of them cleen and one with data. I want to build RAID0 or RAID1 (on the fly) ...
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70 views

MDADM RAID 5 disk missing after reboot

I have a server with 6 disks (4x2TB + 2x4TB). I put the 2TB disks in 2 RAID 0 and the resulting 2 4TB RAIDs with the 2 4TB disks in a RAID 5 array. The RAID works fine until I reboot the server. After ...
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Fedora 20 stopped booting after migrating to RAID array

I have decided to migrate my working Fedora 20 installation onto RAID-1 software array. After this operation, I have a problem with booting my system. Background My machine is MacBook Pro (Early ...
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29 views

Do single bit errors during raid 5 rebuild currpt the entire array?

Does a single bit error during a raid 5 rebuild break the entire array? if so, why? If a single block of data was corrupted/misread during the rebuild, would that not simply result in one block of ...
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14 views

Reset Windows Server password [duplicate]

I'm trying to reset a password for local administrator for a server running 2008 R2 in raid. I tried using spotmau(doesn't see operating system at all), hiren's boot cd(sees administrator, made ...
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47 views

CentOS Gnome only showing 1TB on 6TB Server?

I just bought a new server and want to use it to store files, It has 2x 3TB hard drives. I Set them up in raid 0 as i don't need any redundancy. I don't know much about servers and command-lines ive ...
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72 views

Dell Precision T3500 Intel Rapid Storange Technology shows no Acceleration option?

I have a Dell Precision T3500 with a 2TB HDD with my OS installed and a brand new 128GB SSD which is not formatted. The SATA mode is set to RAID in BIOS and the latest version of the Intel Rapid ...
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48 views

Is there a chance to lose data if I switch RAID to AHCI

I have Windows 7. The boot drive is NON-raid SSD. I also have 2xHDD RAID1 (just data). RAID is Intel Matrix (or whatever the latest name for it). I installed Windows in RAID mode What might happen ...
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81 views

Is hardware RAID worth it? [closed]

I am planning to build a home NAS server, and have managed to get my hands on the following- Core i3 3220 Ivy Bridge CPU 4 GB Kingston RAM Basic motherboard with dual gigabit LAN port 4x WD 3TB HDDS ...
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Is it possible to change a Dual SATA RAID enclosure to a NON-RAID enclosure?

just wanna know if it possible to change a Dual SATA RAID enclosure with a normal USB2.0/3.0 enclosure, like change it to single HDD drive. will it have any problem like cannot detect on PC? Cos I ...
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Detecting when a server is running on UPS battery

I have a home server (HP Proliant ML310 G4) that I bought from my employer a month or so ago. The server runs Debian Linux and I use it for just about everything. I can get away with doing this ...