A type of RAID redundancy that includes parity data spread across a number of member disks
1
vote
2answers
25 views
How picky are RAID controllers when replacing a drive?
I had a drive fail in a RAID5 array and I'm working on finding a replacement. It's an older drive that's fairly hard to find, and most of them out there are used. How close of a drive do I need to the ...
1
vote
2answers
34 views
One unknown drive in previously operational RAID5 array
I have a RAID5 array on my computer, 3X 200GB sata drives. Everything has worked great forever but all of a sudden when I turn it on the BIOS shows that only two of the three drives are functioning. ...
0
votes
1answer
36 views
Is it possible to use grub2 with a linux root partition under Soft-RAID5?
I need some more space in my computer, therefore I want some basic changes be done. One of those is setting a RAID up for all files to be a bit more robust (I have just had a hd crash, so I am a bit ...
2
votes
0answers
1k views
mdadm: safest way to grow RAID 5 (4x2TB) with 2x4TB
My situation:I am currently running a RAID 5 with 4x2 TB disks and would like to grow the array with 2 x 4 TB disks. The goal would be that there is a RAID 5 with 4 x 4 TB (the two 4 TB disks and two ...
3
votes
4answers
168 views
Upgrading from poor performing RAID5 array
After much investigation and the purchase of PCMark7, I believe I have identified the root cause of my PC system's performance issues -- my RAID5 disk array. The PCMark7 scores are listed below. My ...
0
votes
0answers
189 views
Raid 5 Rebuild after HDD Crash on LSI MegaRAID Device in WebBIOS
I've an ESXi 4.1 home server with a LSI MegaRAID card running one Raid 1 volume containing 2 physical sas disks, one standalone sas disk and one Raid 5 volume containing 3 sata disks. Unfortunally one ...
0
votes
0answers
32 views
Want to swap a spare with an active/clean device in raid5
I have a clean raid5 array running on Ubuntu 12.10 with 3 disks. Several months ago, mdadm marked one drive as faulty so I ran an extended SMART test and everything came back fine. I then forced it ...
2
votes
1answer
83 views
Interesting Windows install issue with RAID and an SSD
I have been trying for days to solve this issue, so any help would be appreciated. Here is the issue:
I have a Gigabyte GA-890FXA-UD5 motherboard. Here is a link to the manual and pages starting at ...
5
votes
1answer
93 views
Data Recovery from RAID5 disk - Promise Pegasus with Apple OSLion and Thunderbolt connection
I have a Promise Pegasus R6 - 12 TB RAID 5 disk for major storage purposes. One of the six 2TB hard disks were dead and the company provided me with a replacement. When the disk was inserted it ...
1
vote
1answer
315 views
Degraded RAID5 and no md superblock on one of remaining drive
This is actually on a QNAP TS-509 NAS. The RAID is basically a Linux RAID.
The NAS was configured with RAID 5 with 5 drives (/md0 with /dev/sd[abcde]3). At some point, /dev/sde failed and drive was ...
7
votes
1answer
211 views
Find files affected by bad blocks with md-raid5 and LVM
I've been doing a lot of research on this topic over the last few weeks - and I think I'm close to completing my recovery, as much as is possible at least. To make a long story short, I'll just ...
2
votes
0answers
42 views
Disk utilization 100%, no read or write
Our disks on one of our servers are showing 100% utilization but no read or write.
here is the output of iostat -xc 1 and errors on syslog
https://gist.github.com/4110533
status info from raid card ...
0
votes
0answers
40 views
How to create a new RAID5 array? [closed]
We have one HP DL380 G5 server has RAID1 for OS and Raid5 for Data. Now I would like to create a new array with RAID5 with 3 hdds.
2
votes
1answer
386 views
LaCie NAS failed - Recover Raid 5 From bad device
here is my problem: I have a 5disk (Seagate 2To) RAID5 working with a NAS LaCie 5big. Each disk is still working but the NAS device has failed and it refuses to boot with HDD inside (LaCie helpdesk ...
0
votes
2answers
3k views
Why is RAID5 disabled in windows 8?
I want to create a RAID 5 array in windows 8 with 5 Dynamic Hard Disks and it is grayed out.
If this is not possible why not hide that option.
If it is possible why it is disabled?
after your ...
2
votes
0answers
2k views
How to force mdadm to stop RAID5 array?
I have /dev/md127 RAID5 array that consisted of four drives. I managed to hot remove them from the array and currently /dev/md127 does not have any drives:
cat /proc/mdstat Personalities : [linear] ...
3
votes
0answers
193 views
RAID 5 array degraded - Intel Matrix Storage Manager suddenly says all 4 disks are “Non-raid disks”
Long story short, I have a linux (ubuntu 10.04 LTS) server with a 4 disks configured as a 2 TB RAID 5, set up with Intel Matrix Storage Manager v8.0.0.1038 in BIOS. My power went out, and the UPS ...
1
vote
2answers
522 views
Debian installation and RAID5
I just bought a HP Microserver for use it as dns, http, vpn, file storage and also for backups of other computers at home. I already have 2 1Tb HDD's, so I thought to buy another 2 HDD's and install ...
0
votes
2answers
784 views
FreeNAS RAID5 Server - CPU Choice
What factors should you consider when choosing a CPU for a FreeNAS server? What are the implications and limitations based on CPU in this context?
Currently I'm looking to build a FreeNAS server ...
1
vote
1answer
88 views
Hardware RAID 1 With ERC/TLER/CCTL
I am aware of the problem when using standard consumer-grade drives with RAID levels 5 and 6; if a drive takes too long trying to read and/or repair a bad sector, it will be dropped by a hardware RAID ...
1
vote
2answers
986 views
Testing software RAID5 by pulling a HDD live. Bad idea?
I'm running Ubuntu Server 10.10, with software RAID5 and LVM running on top of that. I have four 2TB HDDs. I also have a separate boot drive with incremental full-system snapshots that run every four ...
0
votes
0answers
64 views
Intel Matrix Raid and Raid5
I suffered failed raid0 and now I'm buying 3x1TB drives to setup raid5 on Intel matrix storage manager that comes with my MoBo (Ausus 5pk-e).
The questions is: how safe am I with the decision (raid5 ...
1
vote
1answer
990 views
How do I tell mdadm to start using a missing disk in my RAID5 array again?
I have a 3-disk RAID array running in my Ubuntu server. This has been running flawlessly for over a year but I was recently forced to strip, move and rebuild the machine.
When I had it all back ...
5
votes
1answer
356 views
A weird issue relate to ext4/lvm/raid-5 after partition recovery
I have 3 hard disks, in the following paragraphs named /dev/sda, /dev/sdb and /dev/sdc, newest came first. Note: /dev/sdc has one primary partition /dev/sdc1, one extended partition /dev/sd2, and 3 ...
1
vote
1answer
63 views
GRUB only sees first of 2 identically-configured drives in RAID 5 array?
Has anyone ever come across a case where of the two (virtual) disks that are members of the same hardware RAID 5 array (LSI 9750), GRUB can only see the first?
It's a 100% hardware RAID 5, to the ...
0
votes
1answer
505 views
Safety of Truecrypt for Large Raid5 using ubuntu, mdadm, lvm, ext3?
I'm planning to set up a large (probably 6-9Tb) raid-5 array on ubuntu using mdadm, lvm and ext3. Does anyone have any opinions or suggestions on the safety of using a Truecrypt volume for that amount ...
1
vote
1answer
216 views
RAID5 + Samba Woes
I'm in the process of setting up a brand-new CentOS 6.2 server. The boot, swap and root partitions live on a 320GB SSD, and my archive files are on a 9,000 GB RAID array.
Problem is that if I setup ...
0
votes
1answer
455 views
Adding Space to RAID5 using mdadm, lvm and ext3
I have seen a few descriptions about using mdadm with lvm to create an easily expandable raid, such as this question, but I still think I'm missing something. Say that I create the raid using mdadm ...
1
vote
1answer
1k views
Will this RAID5 setup work (3TB Seagate Barracudas + Adaptec RAID 6405)?
As the title states, will this RAID combo work, and if not what needs to be changed? Overall opinions would be most helpful.
I currently run a small file server of about 5TB or so. I keep outgrowing ...
0
votes
1answer
138 views
How to expand Raid 5 on ICH10 - Gigabyte ex58-ds4?
I was wondering if there is a relatively simple way to expand my HD space.
My setup is 4 x 640 GB drives. Motherboard has 4 ports on 1 controller and 2 ports on another controller, however they can't ...
2
votes
1answer
685 views
Filesystem corruption (?) and appropriate use of fsck
Last week at work, our linux server (CentOS 5.5) was unresponsive to log in attempts, so I had to hard shut down it. After pulling out a couple of disks, on boot up it reported a degraded raid array ...
1
vote
1answer
112 views
ReclaimMe Recovery of the Table used to identify member disk in RAID 5 array
I have seen this issue posted on many forums with only one possible solution (suggested below) and before I attempt I thought the community could weigh in on this solution and then we can share it ...
1
vote
1answer
210 views
Restoring Raid 5 Meta data / Table
2 part question at end of this text
My problem:
My CMOS was cleared, BIOS was set to IDE instead of RAID.
My understanding (from other sites) is that motherboard Intel ICH10R data is stored in BIOS ...
2
votes
1answer
253 views
RAID 5 Recovery Reset CMOS and drives show up as 2 Member 4 non-Member
How do you restore a raid array (not part of your C drive) after resetting BIOS and installing a new C (Windows) drive.
My setup: (its a LOT of data, i cannot afford to lose it, most of it is ...
0
votes
1answer
251 views
Disk durability when using RAID 10 vs RAID 5
Most of the time technical articles about different RAID levels mostly about
how redundant they are, how fast on read/write etc.
But I can't find information about would a disk in a certain RAID
live ...
1
vote
0answers
639 views
mdadm raid5 read error not correctable
I have a software raid5 setup existing of 4 disks.
sda, sdb, sdc, sdd
Since everything was up and running I wanted to test the array. To do this I pulled the plug on one of the disks (sdd).
Everything ...
0
votes
3answers
180 views
Is it better to partition hard drives for a RAID?
I have four 1TB hard drives and want to set them up in a RAID (5). Some calculations:
4x1000G = 3000G usable space
8x500G = 3500G usable space
16x250G = 3750G usable space
Does this mean it will ...
5
votes
2answers
9k views
Can I set up a RAID 5 with a bunch of drives of different sizes?
I currently have 3 1TB drives, a couple 500GB ones and some 750GB ones. Can I put them all in a RAID 5 configuration or do they need to be of same size?
2
votes
1answer
198 views
RAID5, Can you clone the drive and access the media from Windows?
So my server is about to die and all of a sudden my RAID5 isn't accessible anymore.
Is it possible to access the files on those drives some other way? Like maybe plugging them into another comp, ...
2
votes
0answers
454 views
Recover data from Dynamic Disk (MBR) bigger than 2TB
Here is the situation: Promise Array FastTrak TX4310 with 3 disks (750 GB each) in RAID5. This comes to around 1500 GB of data.
Last week I had the idea of expanding the RAID with an additional 750 ...
1
vote
0answers
153 views
What caused my RAID 5 array to become corrupt?
My machine has an Intel ICH9R RAID controller built in to the motherboard and an additional SIL3124 controller. I had two 1Tb hard disks in a RAID0 array on the Intel controller and 3 1Tb disks in a ...
2
votes
0answers
191 views
Reading or writing with a 4 WD5000AADS drive RAID 5 array drops to 0 speed
Edit, 10/31:
Crash-- complete system lockup. Booted computer, had strange lag for visiting ANY webpage in Chrome.. Figured that either a network problem existed, or Chrome could not write to disk ...
4
votes
3answers
392 views
Several questions about software and onboard RAID 5
I have a few questions on how software and onboard RAID 5 compare:
Is there any way to add a disk to an existing RAID 5 array using either software or onboard RAID?
All motherboards I'm interested ...
5
votes
1answer
1k views
4 x 2TB drives, safe to use RAID-5? What is failure rate?
I've read a number of opinions on the risks of running a RAID-5 using 4 x 2TB drives. Apparently the failure rate of the 2TB drives is so high that there is less redundancy than is generally expected.
...
0
votes
1answer
54 views
RAID Reconfiguration
I have 4 1TB hard drives that I'm about to put in RAID 5. One of the drives is defective to the point that it isn't usable. I have a spare 1TB drive, but it runs at 5900RPM as opposed to the other ...
0
votes
1answer
172 views
How to increase the capacity of a RAID 5 array?
Assume that I built a 2TB RAID 5 array, and it's running and some data is stored on it.
Now I need to increase its size to 5TB.
Can I increase capacity, particularly by adding extra drives? How?
If ...
1
vote
1answer
182 views
how to find bad disk in raid array?
I have a RAID5 array and one of the disks clicks whenever I start up the array. During array operation, it seems to run fine though. This has me worried that I'm going to start running into problems ...
2
votes
2answers
1k views
Can a Raid5 array be optimized using defragmenting or other maintenance tools?
I have a Lian Li Ex-50 Raid Array setup to be 4x 2TB WD Black in a Raid5 formatted to HFS+ (journaled).
The raid array is a hardware raid running through a Sil3132 chipset (SATA2 via eSata ...
1
vote
1answer
368 views
Intel Rapid Storage RAID 5 error, “Missing Drive”
Just recently I purchased a new motherboard for my PC due to the fact I had a motherboard with the defective 67 Intel chipset. The reason I bought the new motherboard was because I started getting ...
3
votes
1answer
137 views
“Breathing” sound from Linux File Server
I have a Ubuntu file server and it makes the oddest sound. I can hear a HD making a "breathing" type sound, like the disc spins up for a moment and then cycles down. It happens on a very regular ...
