Questions tagged [raid5]
RAID (redundant array of independent disks, originally redundant array of inexpensive disks[1][2]) is a storage technology that combines multiple disk drive components into a logical unit. Data is distributed across the drives in one of several ways called "RAID levels", depending on what level of redundancy and performance (via parallel communication) is required. RAID 5 is a specific implementation.
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Create superblock for software raid-5 array
I have created a raid 5 array with mdadm. I created partitions on all five of the disks created a raid-5 array with mdadm on these five partitions).
Everything seems fine however when i try to mount ...
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Optimising a large array for use with Oracle
I have 20 hard disks the are going to be deployed into multiple RAID 5 arrays for use with Oracle on an AIX host.
What is the optimal way to create/lay out the arrays?
Tomimak
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RAID Disk shows foreign status after being removed and inserted into the wrong slot
First of all forgive me that my understanding of Dell RAID system is limited. I have a dell PowerEdge server with PREC H330 Mini controller with 6 of the 8 slot having a physical drive (each 2.182TB) ...
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Add disk to QNap Raid 5
I have a QNap TS-569 Pro configured with Raid 5 of 4 hard drives of 1 Terabyte each.
It has 5 disk slots and I want to increase the size of the Raid of another Terabyte.
Reading the manual seem pretty ...
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How is RAID3/4 is implemented for more than 4 drives?
I understand that, RAID 3/4 for 4 drives is: Parity Drive = D1 XOR D2 XOR D3. But what is there 5 drives or more? For example 5 or 6. How many parity drives is needed, and how XOR algorithm is working ...
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Access clean RAID5 on new machine using 2 of 3 disks
A server of mine is dead. On the server I had 3x disk with a software raid on the second partition of every HD.
Now I have inserted two out of three HDs in a PC (no place for the third!). Here what I'...
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Can I replace a drive with a slightly smaller one in a RAID5 array?
I've got an ancient Dell server with 4 disks in RAID 5. One has become faulty and needs to be replaced. I ordered an identical model drive but when it arrived it is slightly smaller. The RAID ...
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NAS RAID 5 HDD recovery
I have a broken NAS. The system is not broken but the hard drive is. The NAS system is ASUSTOR AS5108T with 8 bay of HDDs. The NAS originally purchased with 8 units 3TB WD GREEN (I know it is wrong to ...
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How to Shrink Raid 5 SAS to 3 Local Disks on windows server R2 2012?
I've installed Windows server 2012R2 on HP ProLiant with 5 SAS Disks (300GBX5). after configuring Raid 5, the total visible size became 825 GB as Disk C. Is it alright?
if i want to create Disk D and ...
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Is it not possible to use 4x1TB disks in RAID5, when booting from the same VD?
I've just got a couple of 2010 Dell servers. One of them has 4x 1TB disks. I configured them in the RAID controller to use all of them in RAID5 to give me 3TB of storage + 1TB for parity. There are no ...
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Why would a RAID5 rebuild fail?
I have a IBM System x3650 server with a ServeRaid controller and two RAID5 arrays, each consisting of 3 disks.
Yesterday, one disk failed (It was the Raid array that holds the data, the system is ...
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Dell PowerEdge 2900 with a faulty disk (among a Raid 5 array). Can I replace it with one with a different firmware?
The original Seagate ST3146855SS disk is running firmware 515, while the one I'm going to buy has a more recent firmware.
All other features are the same (15K5, 146Gb)
Will the controller just ...
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Different sizes of drives - proper RAID setup
We need to setup a Dell server w/ a PERC controller (I forget the exact models because I don't have access to the datacenter, but I can get that information if vital). I have 8 drives like below:
5 x ...
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How to temporarily remove RAID5 drives
Situation:
I have a 3-drive (SSD) software RAID5 (mdadm) array (SATA) on the server (Linux Debian 8.5) for data only. I need to temporarily remove these drives in order to do something with some ...
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RAID5 recreate without loosing data or recovery [closed]
I have problem with RAID5 failed. Intel Matrix Storage on Asus motherboard
The configuration was
- 500 GB NON RAID (System C partition)
- 1 TB - RAID 5 with 3 hard drive (System D partition)
Main ...
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PERC H310 Raid 5 - Fault - Turn array into RAID 0
Yesterday one of the three Raid 5 disks I have configured into my DELL Server PERC H310 controller cannot be found anymore.
I cannot replace the faulty driver now, so the thing I actually would like ...
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Raid 5-Disk Faulty [closed]
I have the following Raid-5 Configuration with one disk faulty.
http://i62.tinypic.com/2z6rxck.png
I need to do a swap out. Not sure with the current configuration if it will affect the other disks, ...
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RAID 5 30TB File storage - filesystem and strip size on large files
Nowadays my storage is 6TB and as I will grow up to 30TB in few months I would like to hear some tips/recommendations on filesystem and element strip size to not to have problems in future.
90% of ...
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Raid 5 scsi fault
I have no much knowledge about servers and I was looking all day around the internet about finding a solution to my raid 5 problem. All of a sudden two disks failed. The server won't boot (HP Proliant,...
user179789
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RAID5 Bad Superblock, not booting to OS
I've been running Ubuntu 12.04 LTS for about 6 months on a computer that has 3 180gb SSDs in EXT4 RAID5 configured through the motherboard's BIOS. The OS froze and computer had to be forced down. On ...
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Age of hard drive via software tool on Windows 7
I an running Intel Raid 5 on Windows 7, and one of my hard drives is reporting an error. This is the second time I've had a hard drive error, and last time I replaced the problem drive.
Now I've had ...
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Can I recover data from a RAID5 after accidental changed of disk order? [closed]
An intern yesterday accidentally changed the disk order, now we get there error, "Following containers have missing required members and cannot be configured. Container #0 RAID-5" Then no boot device ...
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Migration of HDDs in RAID 5 from a P410 Controller (Urgent)
I'm kind of totally lost right now.
I have a server with a P410 Controller (256 Mb) and 4 Drives in RAID5. The server don't start :/
I need to find a solution in emergency, but don't know wich one ?
...
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Can I remove and test hard drive from Raid5 controller without rebuilding?
I have a new PowerEdge T320:
Intel Xeon E5-1410 @ 2.8 GHz
16GB
Windows Server 2008 r2 configured as Domain Controller
Dell PERC S110 Software Raid
4x 7200 rpm 1TB drives configured in Raid5
I have ...
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Shrink windows server 2008 software raid
I have a windows server 2008 with 5*2TB disks in a windows server software raid 5. I want to shrink the volume down to 3 disks and use the other two disks elsewhere but can't find a guide on how to ...
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Failed Redundancy for RAID 5 Disks
I'm facing difficulties in regards to some disk issues if you guys can help me. I am using Windows Server 2003 for my File Server. For the past few days in Disk Management the status of two of my (...
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Windows 2008 R2 raid 0 over hardware raid 5
I am consider using windows raid 0 and raid 1 over two hardware 4x2tb raid 5 arrays. (thinking Seagate green drives). 2x Rocketraid 2680 controller but that could easily change.
So, that would give ...
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Debian squeeze, mdadm. Degraded RAID5 array after each reboot
/etc/mdadm/mdadm.conf
ARRAY /dev/md0 level=raid5 num-devices=4 metadata=00.90 UUID=54e55d36:c3971e21:d484c166:6e86c3d7
devices=/dev/sdb,/dev/sdc,/dev/sdd,/dev/sde
MAILADDR root
mdadm -D /dev/md0
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Data integrity after RAID5 crash
After a hard drive died on a RAID5 setup on a legacy system, the Vmware Virtual Machine on it kept on running for a period of 6 months. Needless to say, finally it crashed bad. Now, the dead hard ...
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RAID 5 setup not being noticed with Windows Server 2008 R2
I have just received a new DELL PowerEdge R310 Server and according to my job I need to set up all 4 500GB drives to run using the RAID 5 configuration. When I go into the controller configuration ...
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How to identify RAID (5 or 6) controllers that allow dynamic resize of the array
I'm building a server with a RAID5 array, based on a hardware controller. I want to be able to later add additional disks and have the array rebalance across all of the disks, enlarging the usable ...
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question on I/O stats in linux
In one of our lab machines,I found a disk i/o error suddenly.It was running for a while doing lot of i/o on the disk due to our application processing huge data.My machine is hardware raided which is ...
sriram
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trying to rebuild RAID 5 array with failed drive, `/dev/sdc1 has no superblock - assembly aborted`
I have ~20TB MD array spanned across 5 6TB hard drives. yesterday one of the drives failed and the system stopped booting. I'm not very good at Linux, so whenever this happened in the past, I'd simply ...
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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 --...
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Can RAID 5 be made, when one or more of the disk is actually RAID 0?
I have this question since (I think) 3 years ago, but since I was never actually planning to build server, I just shrug it off. But tonight, I literally can't sleep because of this burning question.
...
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Ways to make a backup on RAID5 filesystem (mdadm) with many files
I have a NAS containing RAID5 array (5.4TB in total, 2.9TB in use) using mdadm.
Now I plan to modify some hardware of it (especially SATA controller), so I'd like to have a whole backup of this RAID5 ...
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highpoint rr62x RAID 5 status disable, recover saying parameter error
I have been using a Highpoint rr62x controller(BIOS version 1.3) for about a decade now. The RAID-5 volume is containing 4 disks-each 3TB.
For the last five years my RAID has been disabled. I have ...
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Replace RAID 5 without losing system on a Dell r710 Perc6 Debian
I have a Dell r710 running Debian and just got it tuned to my use. It boots from a RAID 5 array of 4x300gb SAS drives. I have just converted some 600gb NetApp drives to 512 sector and they are ...
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Create RAID 5 with 2 new and 2 data disks without losing data [closed]
I would like to create a RAID 5 for my file storage. For that purpose, I currently use 2 drives without any RAID configuration. I would like to upgrade to a RAID 5. I want to add 2 new (and empty) ...
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Remove Raid Memory from HP DL380 G7
Hello,
i have a problem in HP G7 raid memory and need to remove it
i have Raid-5 array configured in this server but no cache configured
what will happen when remove the memory ? is the raid-5 ...
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Unable to use/mount the full size(20TB) of configured RAID5 array on centos7
Actually i have created software RAID 5 array md0 using mdadm linux. In this configuration i have used 6 Harddisk (4 TB each) and the final raid5 array size is 20TB approx. As we know raid 5 use n-1 ...
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Unable to mount a RAID 5 volume
Evening all,
Total n00b when it comes to Linux, I use Xpenology (Synology) as NAS software and following a faulty SATA cable lost my RAID 5 volume - within the OS it's sat in a crashed state.
...
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Disadvantages of more RAID 5 arrays in a RAID 50 array
We have a 24 disk SAN, currently configured in RAID 50, with a RAID 0 stripe across two RAID 5 arrays with 11 disks in each RAID 5. The two remaining disks are allocated as hot spares, one for each ...
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Synology blue led of death (led blinking)
My Synology (10 disks) suddenly doesn't reboot.
Connecting it with the serial port, I could manage to boot on "Synology 1" and "Synology 2"
Synology 1, is a kind of "recovery partition" allowing ...
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Raid Controller: Activating Write Back [closed]
We need to activate "write back"-mode on a raid controller in a storage server.
Do i need to reinstall the operating system or rebuild the raid setup after activating write back?
We can´t test it, ...
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Does data get bottlenecked when copying from one server to another when the two servers have different RAID configurations?
Suppose Server 1 is configured with 8 1TB disks in RAID 5. Server 2 is configured with 8 1TB disks in RAID 0. There is a link between the two servers but for the purpose of this question, lets suppose ...
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Best RAID level for NAS [closed]
I just bought my first computer that I'm going to run as a NAS with OpenMediaVault as OS. I bought two HDD (WD red 5400 rpm) with the capacity of 3TB each (and one 120GB SSD that I'm going to run the ...
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Would this RAID 5 solution work?
I have a question about RAID 5 rebuilding.
Let's assume the following: A RAID 5, 3 disk (5TB each) array (i.e. 10TB useable).
If a disk fails, the data remains accessible (e.g. employees could ...
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How to solve performance problems with VMware ESXi 5.5 on old Dell PowerEdge 2900 hardware [closed]
I have a couple of old Dell PowerEdge 2900 servers that have come free and I would like to use them to host a mail server cluster.
They are a bit old, but have been running workhorses for a while, ...
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When exactly does a RAID5 reconstruction happen?
Let's assume the following scenario:
A RAID5 array consisting of 3 disks is happy and running
One of the disks crashes
We replace the broken disk with a spare one
The system is up and running again
...
