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Questions tagged [raid1]

RAID 1 or Mirrored RAID uses two or more disks that store the same data.

RAID Level 1 or mirrored RAID uses two or more disks that store the same data. One disk is mirrored to the other. Write speeds are the same as using one disk, and read speeds are twice as much.

RAID 1 is used when reliability needs to be higher than normal.

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How to increase size of Raid 1 Allocation?

We had Raid 1 setup with two 1tb drives. I have swapped out the drives and now it was on two 2tb drives, however, the raid array is still only 1 tb in size. Is there a way to increase the size of the array without having to pull the data off and…
mahle
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Setting up Raid 1 in a dell poweredge R300 server

Hello everybody i have a dell poweredge r300 server, and i want to set up Raid 1, how can i do that? thnx. PS: i cant access to the utility mode.
Jose Guzman
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Kernel panic error

We have a dedicated server with software RAID1 and one of the disk failed recently. The disk was replaced but after rebuilding the array and rebooting the server freezes with a Kernel Panic message No filesystem could mount root, tried: reiserfs…
cioby23
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Raid 1 Mirror - weird data loss for 1 month

I have been running windows software RAID 1 (mirror) on Windows 2008 R2 for a while and recently I experienced something very odd, hope someone can help explaining and share your view. Yesterday (Mar 14) my Windows 2008 R2 server just crashed and…
userb00
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Switching from Raid1 to Raid10

we are running a Dell Server with a PERC5i Raid card using a Raid1 setup. Now we are hitting a performance problem with our harddrive performance and think about switching to Raid10. Which steps are necessary when switching from Raid1 to Raid10? Can…
j0nes
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DELL PowerEdge 2850 - How to change PEDC 4e/Di from RAID-0 to Raid-1?

SERVER : PE 2850 RC: PEDC 4e/Di Raid Config: Raid-0 (Current) Disk: 2 X 300GB I have very little in this server space, Recently I got a server PE 2850 and trying to change the RAID configuration from Raid-0 to Raid-1 but I dont have any option…
Ananth Ramasamy Meenachi
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Adaptec HostRaid RAID1 1/2 of HDD capacity

I have a server with Adaptec HostRaid controller. It has 2x 2TB drives. If I go to create a RAID0 array (striped), it will set the array's capacity to 2TB, when I go to create a RAID1 array (mirrored, and what I want to use), it sets the array's…
SuperMicro321
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Encrypted partitions with redundancy on ubuntu server

Hey I have to make a file system with an encrypted partition with on ubuntu server. something like Unencrypted: / - 10 GB /home - 10GB /var - 5GB -------------- Encrypted: /opt - 50GB This I can figure out in the setup, just partition as normal,…
Flamewires
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How to move 100mb hidden system reserved partition on Windows Server 2008 R2 to other drive?

I have a server with two 1.5TB hard drives. I was going to install a Windows Server 2008 R2 and create software RAID1 using Windows Disk Management Utility. I instaleld Windows, open this console and that is what I…
Artyom Krivokrisenko
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RAID1: Migrate HDD to SSD?

My current workstation uses an Adaptec 5805, with Win2008 mirrored between two 72 GB (10K?) savvio drives. My question is if there's a way to migrate the mirror to use SSDs - I've been looking at 90GB Corsair Force (Sandy Bridge) to replace the…
OMG Ponies
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Dell Power Edge 2850 running slow on 1 drive?

Would a dell poweredge 2850 running in a Raid 1 (mirroring) config run in a reduced performance state if one of the drives break? We're waiting on a replacement drive and getting numerous errors. Does it maybe go into some sort of automatic safe…
John
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HP Smart Array; Is it possible to convert Raid1 to Raid0 by dropping a failed drive?

I have a server that was running two 60GB drives as a logical RAID1. At some point the second drive was physically removed and the logical drive has been in "Interim Recovery Mode" for several months now. There's no need for the redundancy of RAID1…
Erik Heppler
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RAID-1 disk failure question

Assume a 2-drive RAID-1 array on an HP DL 380 G7 server with the P410i raid controller. If the controller determines that one of the two drives has failed, I assume that it will automatically start using only the single, still-functioniong drive and…
user60647
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Linux: create software RAID 1 from partition with data

I have a partition /dev/sdb2 formatted as fd and that is mounted as /var. I need to make this partition ready to raid 1 ( for this example /dev/md1 ). I still don't have the second HD, but want to prepare it in a way that when the HD arrives, it's…
Fernando
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How can I increase the size of a RAID 1 array from 750GB to 1TB? 3ware

3ware 9650SE-2LP Array is 750GB volume, RAID 1. One drive is 750GB, the other is 1TB. Looking to replace the 750GB drive with a 1TB. Will the array rebuild to the max size of 1TB, or will the array need to be broken and remade from the first drive?…
user57161
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