Questions tagged [raid]
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.
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What would be an ideal RAID for this situation? [closed]
We have an end of life Dell VRTX. I am tasked with migrating the VMs to a server temporarily while we transition to the cloud.
Should I configure 12 1.2 TB 10k SAS drives into one RAID, or RAID two ...
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Linux Software RAID MD partition are gone, how to recover?
after a deadly electricity fault we got a Linux MD software raid10 gone.
It seems that all 4 devices cannot see anymore the GPT partition.
The partition was created with this scripts:
parted /dev/sda
...
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What is the maximum disk size for a RAID controller?
Do RAID controllers have a limitation in maximum size of the single physical disk?
I have a venerable ARC-1220 controller with 2 TB disks in JBOD mode and I am considering expanding it by replacing ...
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Avago MegaRaid SAS 9364-8i Foreign view
All,
My Lenovo workstation (RAID 5 & 4 disks) keeps rebooting and does not pop up the log in the Linux window. After logging into the MegaRAID, I found that the RAID configuration is missing (see ...
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RAID 0 or no RAID [closed]
I have a workstation with four 2 TB SAS disks. I do data analysis with Python on Linux.
Is it better to use RAID 0, or install Linux on one disk and simply mount the other hard disks? I have several ...
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mdadm: Restoring RAID 10 on synology nas
I apologize for my English.
Recently, one of my disks in the Synology NAS failed, and I decided to replace all disks with higher-capacity ones. First, I replaced the faulty disk with a larger-capacity ...
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Software RAID 5 recovery
I had software raid 5 working like a charm, but I decided to move to other platform. After plugging drives to new computer I wanted to reassemble array but mdadm gave me an error that drives have no ...
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How can I debug a slow (software) RAID 10 array?
I have a software RAID 10 array setup using mdadm. There are 8 separate disks. Both read and write speeds are extremely slow, especially writes. Any large (multi-GB) file added to the filesystem is ...
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Can I determine how much CPU is used for calculating RAID parity?
I have a RAID 5 array off which a database reads and writes small amounts of data.
In normal circumstances, the database operations including commiting runs in acceptable time. However, when a large ...
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Are RAID controllers blind to partition tables on individual disks?
I'm curious how the concept of partitions (and partition tables) co-exist with the concept of RAID arrays. Here is my current understanding (correct me if I'm wrong anywhere):
A physical hard-drive ...
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Mega RAID suddenly, incredible slow after a consistency check and nothing found
I am having difficulty solving this problem. I have a RAID consistency check every Sunday, and I checked today after my colleagues complained about the server being painfully slow. I checked iotop, ...
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How can I fix wrong mdadm.conf in a working raid 1?
I have a server linux with CentOS Linux release 7.9.2009.
Server has 2 disks with a raid1 software.
Raid1 seems ok, and if i run cat /proc/mdstat this is the output:
Personalities : [raid1]
md124 : ...
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When transfering a RAID array to new computer, do the RAID adapter drivers need to be the same?
I have a Plex server running on Fedora 36 Server, with an ARECA 1883 controller running two RAID enclosures (approx. 500TB). I am currently building a new server, again on Fedora, with the goal of ...
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Synology SHR 2 disk: replace HDD with SSD
I have a DS218+ with 2x3TB WD Black, all allocated to single storage pool (SHR). The disks are hot-swappable.
The volume is almost full and I'd like to replace them with 2x4TB Crucial SSD. Only DSM 7....
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How do i safely add a missing partition to existing raid1 array in RHEL8
I did a RAID1 to lvm for / partition but i forgot to RAID1 /boot and /boot/efi standard partition, how do i safely add the missing partitions into RAID1 array?
click here for image of partitions
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