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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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HP Proliant DL320 G5 Raid Advice

So I just acquired this HP Proliant DL320 G5 Server with two 160GB drives setup in a Raid 1 array. I'm planning sticking this in a colo and installing Proxmox (openvz server) and running two debian-based webservers (django + apache + nginx) on them.…
karlmw
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How can I test the read speed of a RAID1 device?

Some RAID controllers speed-up read access when using RAID1. Other controllers can't do that. Trying some RAID1 configurations, I want to know if the read speed is faster both on a single file and on several files. There are plenty of tools which…
Arseni Mourzenko
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Can OS-X Snow Leopard Server run Parallels 5 with Win-XP and then have QuickBooks Multi user hosted there?

We have a 2.66GHz Mac mini Snow leopard Server with the HDs in a RAID1 configuration and we have a need to use Multi user QuickBooks 2009 Premiere Contractors edition. Can we install Parallels 5 on our server with the guest OS being Win-XP SP3 and…
Dale
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Debian source control and bug tracking server - what's a good backup plan?

I run a subversion source control server from my house on a debian machine. I will be setting up Jira for bug/project tracking very soon so I now have the necessary motivation to put a proper backup plan in place. The current hard drive in my…
Tone
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mdadm cron job sends email that cron has run

I've got an Ubuntu 8.04 server using mdadm to create several RAID1 arrays. I created /etc/cron.hourly/mdadm as follows: #! /bin/sh set -e mdadm --monitor /dev/md0 /dev/md3 /dev/md4 --oneshot (Yes, the array numbers are not sequential, and I'm not…
Andrew
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Compatibility Problem: Intel Server Chassis SR1500 + Windows Server 2003 R2 + Seagate Barracuda 7200.11 1.5TB

I got an Intel Server Chassis SR1500. Since there are 3 slots for hard disk, I put 2 Seagate Barracuda 7200.10 320GB to Slot 0 and 1 to make a RAID1. For the last slot (Slot 2), I put a Seagate Barracuda 7200.11 1.5TB, make it another set of…
Raptor
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Do mounted folders get mirrored with RAID1?

I have two drives configured for RAID1 on a a centos 7.9 server. I have been running out of space, installed a third drive and relocated the /opt folder to this third drive. I still seem to be running out of disk space. With these two drives in a…
stackQA
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How to replace old drives in RAID 1 using WebBIOS?

Working with Sun Fire X4170 Server. Now it have three RAIDs, all is on level 1. Every logical volume (every RAID) contains one Proxmox VM, idk does it matter in my case. The first RAID recognizes that there is no second drive, while the second RAID…
Everblane
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setup Raid1 on running system

I have 2 disk sda and sdb with several partition. I have to make a raid1 of the running system. I managed to setup raid1 with md0 on root but there are 2 more partition which are mounted on /home and /var which i cannot add to raid. Below are the…
codelearner1029
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Enlarging RAID1 virtual drive online on LSI MegaRAID SAS 9240-8i without downtime?

I recently went out to a customer location and replaced + rebuilt a RAID1 drive group on their Lenovo TS440 server, going from 2 TB drives to 4 TB drives. Question is - what's the best way to enlarge the virtual drive group? It's stuck at 2 TB and I…
eschga
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After disk reinstallation 2 disks in RAID1 became foreign // PowerEdge r720

I'm a newbie in DELL servers, so need your advice. First of all, we have PowerEdge r720 with 4 HDDs, two 2TB SAS with RAID 1 and two SAS 1TB in RAID 1 too. After the 1 of the HDD was plugged out and plugged in the slot, it's activity LED was no more…
d.pustovoitov
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RAID1 M.2 SSD (2 Drives) | 1 Failed, I removed and Replaced with a new one, but its state stays "removed"

I have a Ubuntu Server RAID1 M.2 SSD (2 Drives) where 1 Failed, I removed and Replaced with a new one, but its state stays "removed". I am new to RAID Stuff, Below are my RAID Details: cat /proc/mdstat Personalities : [raid1] [linear] [multipath]…
tj0xin
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How to delete Software RAID1 partition?

I have Debian 11 server with software RAID 1 without lvm: root@debian-base ~ # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme1n1 259:0 0 3.5T 0 disk ├─nvme1n1p1 259:1 0 4G 0 part │ └─md0 9:0 0 4G 0 raid1…
MAMProgr
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Problems converting a raid1 to raid5

I had a clean raid1 which I tried to convert to a raid5 following this procedure: https://dev.to/csgeek/converting-raid-1-to-raid-5-on-linux-file-systems-k73 After the step: mdadm --create /dev/md0 --level=5 --raid-devices=2 /dev/sdX1…
Moritz
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Best way to clone a single disk from a Software RAID1 Array in Linux server

How can I clone a single HDD bootable disk from a Software RAID1 Array in Linux server? It is currently a two-disk HDD mirror array. I have physical access to the server, and it has empty bays for disks. I'd like to leave the RAID1 array the way it…
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