RAID, an acronym originally for Redundant Array of Inexpensive Disks (today usually interpreted as referred to as Redundant Array of Independent Disks), is a technology that provides increased storage performance and reliability through redundancy by spreading data across multiple disks using various algorithms (RAID-levels). RAID can be implemented in hardware storage controllers, or in software, usually as operating system/kernel features.
Questions tagged [raid]
3585 questions
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Drop-in replacement of Dell H330 controller with H730(P)
I am (slowly) upgrading some Dell servers. One of these has a H330 PERC controller which is quite slow (no cache, etc.).
So I'm considering upgrading it to a H730P.
It is a secondary server with two 4TB SAS disks in RAID1 configuration.
My question…
LSerni
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Persistent multiple medium errors on LSI RAID array
One of our SuperMicro servers with an onboard LSI 2308 RAID controller has been having issues with our main RAID10 array consisting of 4 Seagate 600 PRO SSD drives (in slots 0,1,2,3).
It started with a consistency check that resulted in a large…
vdyvp
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Extending RAID 10 on MegaRAID
So I had a few servers with 8 drives configured in RAID 10. Four pairs of two drives in the RAID1 level. One of the drives went bad and the RAID controller removed one pair from the set, so it now only contains 6 drives and but it's marked as…
Lukáš Lalinský
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Xenserver 7 does not see new raid array just added on Dell R710 server
I have a question regarding how Xenserver 7.0 sees and add local storage raid arrays from a Dell R710 server.
Originally, the server came with a raid 5 setup of 4 hard drives, for a total of 800GB of space. I installed Xenserver on top of this raid…
Harvey Lin
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Does the PERC6i card support multiple RAID arrays?
I'm looking to expand storage with my PE 2950. It has a PERC6i card that currently runs two SAS drives in a RAID 10 configuration, used as my OS partition.
I'd like to add a couple SATA drives (1TB+ each) as a RAID configuration (most likely RAID…
Jim Geurts
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Debian Installer Making RAID with some RAID Devices
I'm setting up a brand new file server using Debian Squeeze. I have a mixed setup of disks where I have 500GB x 4 and 1TB x 3 all SATA and a small 2GB Transcend IDE Flash module for the base OS install.
I would like to setup two RAID-0s from the…
AaronM
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lsi megaraid migrate raid 6 to raid 5 without data loss?
I'm using a LSI MegaRAID SAS 9260-8i controller, firmware version 12.15.0-0189 with 8 physical drives. I currently have the main array running on RAID6 with 5 disks and second array on RAID1 with 2 disks. Last one disk slot is hot spare for…
Vladimir Sokolov
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Plan for hot replacing damaged RAID-1 drive in freebsd 9.0
i have System FreeBSD 9.0 with RAID configuration
# mfiutil show config
mfi0 Configuration: 2 arrays, 2 volumes, 0 spares
array 0 of 2 drives:
drive 4 ( 558G) ONLINE SAS
drive 5 ( …
Nikola
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Small raid array of large drives or large array of small drives?
I'm looking into building a NAS for file storage, and I'm trying to determine the right scenario for my use case. I'm looking for about 32TB of raw storage, and no less than 16 useable given a redundant RAID array. I'll mostly be accessing files…
Fluoroantimonic Acid
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How can I make old hardware work with new (large) drives?
Good afternoon,
I picked up three Dell Poweredge 1950s and 4 SunFire X2200s from my local surplus store with the intention to finally build that cluster I've been thinking about for a few months. However, I understand that drives larger than 2.2 TB…
jakethehammer
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Confusion over RAID controllers for Dell R620 - what will work?
I have a (remotely located) R620 server with an H310 PERC controller (Described as "405-1110 : H310 Adapter, low profile", part R1DNH - What I've got is definitely a PCIE card.
First question - What SAS connector interface is this? (According to…
davidgo
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Is one of my former problematic RAID10 disks Okay now?
I had messages in /var/log/messages that seem to indicate that /dev/sdc is problematic (all besides the last two):
$ sudo grep sdc /var/log/messages
Apr 11 14:05:57 docker smartd[1070]: Device: /dev/sdc [SAT], 56 Currently unreadable (pending)…
boardrider
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HP SmartArray P400i marks a good drive as a failed, what can I do about it?
I have the HP ProLiant DL360 G5 server with the SmartArray P400i RAID controller. The server itself is pretty old, but it still works normally. The only issue is the RAID controller, which marks good drives as failed. It happens quite often, almost…
h31
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Windows Server 3 or 4 Disk Parity Configuration
right now I've got an Ubuntu Server with a 3x4TB Software Raid 5 Configuration.
I came to the conclusion, that the best for me would be to switch to Windows Server.
I also researched that RAID 5 configurations shouldn't be used anymore due there is…
Canonip
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Can I move from SAS HDD to SSD?
I have an HP ML350 Gen 8 server with 8 SAS HDDs of 600 GB each. Since the drives are a little bit old now, I would like to replace them with SSDs.
I would like to know if I can do this, and if I should continue the existing RAID setup.
Current RAID…
HubCap
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