RAID, an acronym for Redundant Array of Independent Disks (sometimes incorrectly referred to as Redundant Array of Inexpensive Disks), is a technology that provides increased storage functions and reliability through redundancy. -Wikipedia
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79 views
3Ware RAID 1 drive failed… replacement drive is slightly smaller. Do I have any options?
The picture says it all. One of the drives in a RAID-1 array failed and I had a replacement drive with the same model number ready.
When I tried to rebuild the array using the web interface it fails ...
0
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1answer
45 views
Huge disk write speed difference between two different servers
I have two servers, with similar disks.
The first server has 4x300GB Seagate Cheetah 15K.5 model nº ST3300655SS 3.5'' RAID 10.
The second 4x300GB Seagate Savvio 15K.3 model nº ST9300653SS 2.5'' RAID ...
1
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1answer
63 views
Adaptec RAID array was not detected after updating the kernel?
Continue from this topic, the newer kernel booted successfully but it doesn't see my sdc - which is a hardware RAID array (level 10).
I'm sure the aacraid module is loaded:
# grep aacraid ...
1
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1answer
51 views
it is good and safe to use debian software raid?
My questions is as simple as the title: it is good and safe to use debian6 software raid?
How safe it is?
Can i have a software RAID configuration backup?
How can i deal/recover with/from a HDD ...
3
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0answers
120 views
Resize openSUSE 12.3 GPT ext4 partitions in a RAID1 disk array
I have a software raid configured (/dev/md2) which has assigned the partitions sda3 and sdb3 from two 3TB disks (sda and sdb).
The partition types are GPT not LVM and file system is ext4.
Now, the ...
2
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2answers
105 views
RAID 10 — how do you know a drive is going or is bad?
I have some servers with a datacenter all the servers have RAID 10 setup. How do I know when one of the drives is going bad or is bad and needs to be replaced?
EDIT: These servers are unmnaaged and ...
0
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0answers
37 views
mdadm: Growing a RAID0 Array Weirdness
I have created 3 RAID0 arrays using mdadm on 3 Rackspace CloudServers using Rackspace's CloudBlockStorage as their devices. Each array has their own set of CBS volumes. RS-CBS has an upper limit of ...
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1answer
69 views
mdadm Device or resource busy not by dmraid
I have an issue with a new mdadm raid.
When i try to:
root@dys:~# mdadm --add --verbose /dev/md0 /dev/sdb1
mdadm: Cannot open /dev/sdb1: Device or resource busy
dmraid i pointed as the usual ...
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0answers
50 views
GRUB is not loading - error: two disks with number 3
After rebooting my Debian 6.0 server I am getting these errors on load (captured it through kvm console):
error: found two disks with number 3
error: superfluous RAID member (2 found)
error: file not ...
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0answers
39 views
Resize virtual disk raid 0 MD1000 Perc 5/e
I've created virtual disk raid 0 of total size 2TB (one physical hdd), what if I will want to add next 2TB hdd into my storage dell powervault MD1000? Can I resize my existing virtual disk without ...
1
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1answer
115 views
Converting BTRFS filesystem to RAID1 fails with “Inappropriate ioctl for device”
I had a ~1.6TB BTRFS volume on a single partition, to which successfully I added another freshly created and formatted partition (on another device) of exact same size with the intent of mirroring ...
1
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1answer
39 views
Remove “faulty state” in RAID 1
I wonder if there is any possibility to remove the state "faulty" in a RAID 1 if (for example) someone failed the wrong hard disk.
I already searched for answers with Google and fout several ...
1
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0answers
60 views
Are there any Triple Parity RAID cards commercially avaliable?
I am looking to setup a triple parity raid system. I was searching for a hardware triple parity RAID card to use with a SAS expander from the usual suspects, but could not find any. Are there any ...
1
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0answers
50 views
Expanding raid5 software raid
I have recently bought 4 2TB drives to expand my existing 4*2TB raid5 setup, using mdadm software raid in debian. As a initial step, I have created a raid5 on the four new drives and created an ...
0
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1answer
51 views
mdadm - raid device name changed on reboot
I'm not sure why, but after I restarted my ec2 instance, /dev/md0 didn't start as it normally would. after I saw what's available in /dev/md*, instead of seeing /dev/md0, there is a device there named ...
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0answers
48 views
Error at booting server - ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
I installed Debian 6 on HP server with hardware RAID 5 configured.
RAID Controller Info
04:03.0 RAID bus controller [0104]: Compaq Computer Corporation Smart Array 64xx [0e11:0046] (rev 01)
Kernel ...
0
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1answer
31 views
3Ware 9500S - Do spare disks spin when not used
Does anybody knows if spare disks connected to a 3Ware 9500s controller will be spinning although not being used? This will wear unnecessarily the disk, possibly spinning for years before a unit gets ...
0
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1answer
209 views
VMware ESXi 5.1 can be installed RAID1 Software?
I am close to get a dedicated server in some data center and in the shopping cart there is no option to RAID1 Hardware only RAID1 by Software, since they will install ESXi it's possible that ESXi can ...
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1answer
90 views
Onboard RAID with Windows 2012 [closed]
I have SSDs in an onboard RAID array. I am running the Windows 2012 Server install, and it says "We couldn't find any drivers. To get a storage driver, click Load driver."
I tried to do some ...
1
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1answer
64 views
RAID 5 + hot spare, rebuild
I have a RAID 5 array that contains 5 HDD's + 1 hot spare (each is 750 Gb). Drive #1 just died, and the hot spare was automatically brought into the array for a rebuild.
My question is, do I replace ...
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0answers
50 views
Dell PowerEdge R510 SATA drives appearing as SAS
I have a Dell PowerEdge R510 with the following:
PERC H700
2 x 500GB cabled SATA drives (RAID 1)
6 x 3 TB SAS hot swap drives (5 in RAID 6)
I was testing an online expansion of the RAID array ...
0
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1answer
40 views
How can I estimate binlog size and whether binlogs should be on a separate disk?
We are about to setup MySQL Master-Slave replication on our production database. We intend to run backups from the slave (at the moment our master lags out for 15 mins every day whilst backups are ...
-1
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1answer
90 views
Mistakenly changed rack server hdds [closed]
I have an old rack server which is running raid config with 12 hdd in it. One of the junior engineers powered down the server for maintenace. He then swapped 3 hard drives while cleaning the server. ...
0
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1answer
58 views
Why can't i recover a RAID1 disk which apparently has no errors
For several years now we run a software RAID1 on a old Gentoo box with a custom Linux 2.6.31. The RAID consists of 2 harddisk with 4 partitions each. In the last years it happend about 3-4 times that ...
0
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1answer
82 views
Is there anything I can do with a software RAID 1 on linux to workaround temporary 'bad' sectors?
Basically I have two identical hard disks that are in perfect working order, they just don't have the vibration tolerance they need for the environment they are in. (I am making an educated guess that ...
0
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0answers
31 views
How to upgrade raid10 disks to bigger size? [duplicate]
I dont have extra server. Server is in IDC.
I have centos 5 OS installed.
with RAID bus controller: Adaptec AAC-RAID (rev 02) controller (Adaptec 4000SAS)
4 disks x 74gb sas 15k
no LVM
filesystem ...
0
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1answer
38 views
3Ware 9500-4lp - Single Disk to RAID 1 - Possible? [duplicate]
I have a single disk attached to a 3Ware 9500-4LP controller. The unit is configured as Single Disk.
I have attached 2 more drives, identical size. Can I pair the 3 drives in a RAID 1 config, without ...
0
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1answer
69 views
disk failure not detected by mdadm
I am using soft raid linux raid1 on my server. last saturday, on the disk has a failure because I could see error below from my log
Mar 16 08:38:40 storage-1 kernel: [694968.826388] ata2.01: status: ...
0
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1answer
56 views
Are there any significant differences between raid volume and partitions?
I have an option to create a single raid volume and partition it in the OS, or create multiple raid volumes (one for each partition)?
What are the performance or access time differences between two?
...
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2answers
91 views
Will Intel RES2CV360 SAS Port Expander Work With Adaptec 6805 RAID Controller?
Have both the expander and the RAID controller. Hooked everything together according to the docs on-line, but no drivers are seen. Can't tell if this is just a compatibility issue, or perhaps a bad ...
0
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1answer
65 views
MDADM not assembling raid0 that is part of a raid5 on boot
I use a RAID0 (md2) as a device in a RAID5 (md3) setup (see below). Now everytime the computer boots, mdadm will mark md3 as degraded and i am forced to re-add md2 as a new spare. Of course mdadm then ...
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2answers
52 views
Is it possible to build a server array [closed]
I am researching a redundant server system,
And i came with the following question:
Is it possible to build multiple server s in a raid 1 configuration (like hard drives).
This because if one server ...
-2
votes
2answers
80 views
RHEL 6.0 enterprise intallation probelm on hp gen8 server [closed]
i am unable to install rhel 6 enterprise edition on hp dl380p gen8 server. with a p420i raid controller with 512 mb cache.
whenever i boot from my media.. after asking for language and keyboard type.. ...
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2answers
36 views
Are RAID 1 disks usable transparently?
I was wondering if RAID 1 disks are usable straight away, without the RAID controller. Possible?
2
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1answer
60 views
Recovery RAID array LVM
I have a NAS, the unit became unresponsive so after some research I pulled the drives out of the box, and hooked them up to my Ubuntu box. I now see all 4 drives, and all 4 partitions on the drives. ...
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0answers
123 views
Removing raid metadata from drives
Normally when I have a drive which contains raid metadata e.g. from fakeraid or a hardware raid card I can get rid of it with:
dmraid -r -E /dev/sdX
Or if that doesnt work, doing a simple dd ...
1
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0answers
40 views
SAS RAID Card not accepting disks
I have just purchased a Dell 6/IR SAS RAID card for a Dell SC1435 Poweredge Server that I bought a few months ago on eBay. When I got it, the SAS RAID card fitted (a 5/IR) was faulty and it was ...
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0answers
32 views
Linux CLI program to verify/control nVidia hardware RAID?
I have a server with a Supermicro motherboard that has an nVidia RAID controller on board. When I boot up, I can hit F10 and see/modify the RAID settings.
However, I don't want to reboot this server ...
0
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1answer
32 views
Expand a RAID50 array on Adaptec
It's possible to expand a RAID50 array on Adaptec 6805 without data loss ?
0
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1answer
68 views
RAID: replacing a disk before it fails
We have a RAID 5 setup (Megaraid SAS ROMB) with 4 930 Gb physical disks running as a 2.7 TB VD. Recently (a few months back) we had a drive fail and had to leave it in degraded mode for ages (various ...
0
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0answers
79 views
How to prevent Ubuntu server from hanging due to jbd2/sda2-8 and flush-8 processes
I have an Ubuntu server running Apache, PHP, Memcache. The problem is that the server hangs for a few seconds every minute or so.
Running iotop, I see intense disk activity when the server hangs, due ...
1
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2answers
60 views
Strange behavior with `find -delete`
I'm using Ubuntu 12.04 with 2 x 2TB SATA3 harddisks in software RAID1. The filesystem is ext4 with data=writeback.
When using find . -maxdepth 1 -name '*' -delete to delete a large number of files in ...
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2answers
49 views
RAID config for write heavy postgresql 9.2 database with four disks
I have a server with 32GB ram, one intel E3-1245 and four 15k SAS disks with a BB LSI MegaRaid controller. I wan't the optimal performance for my server, which will be pretty write heavy at times, and ...
0
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1answer
56 views
Mirror two software RAID volumes
I have two software RAID volumes of differing speed and reliability on Ubuntu 12.10. I want to mirror the contents of the faster, but less reliable /dev/md0 to /dev/md1.
My plan was to build a ...
1
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1answer
67 views
Cloning software RAID 1
I got any order for seven Linux-HA NFS clusters, which consist of two nodes a piece. Each node has a software RAID 1 configuration. I'm trying to speed up the process here.
How could I go about ...
1
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1answer
68 views
HDD compatibility to rebuild for RAID
Last year we build a RAID 1 with Western Digital 2 TB drive model number WD20EARS. Unfortunately one of the drives failed. We are unable to find any new drives of the same model number. What do we do?
...
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2answers
124 views
Is it possible to change disk in RAID0 array of Intel Rapid Storage Tehnology?
My BIOS started to report red line with error for one of 2 drives in RAID0 array during boot.
But file system appears to be working without any visible problems, so I was able to make system image and ...
0
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1answer
87 views
PERC - Create RAID1 from single drive without losing data
I have a PowerEdge 2950. I have one 1TB drive with critical data on it that has been running alone for months, and I want to add a second 1TB drive and make a RAID1 out of these 2 drives, but without ...
0
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1answer
157 views
harddisk hot-plug issue for Dell PowerEdge R720
Now I have 2 SAS harddisk plugged to R720 and formed a RAID 1 array.
What if I want to add more SATA harddisks to it without adding to the RAID, is it ok for me to add directly without reboot and ...
0
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2answers
28 views
Scripted partition creation
I need to routinely do these steps on various machines that have the same hardware:
delete any partitions on /dev/sda
create a 100G primary partition on /dev/sda
change partition type of created ...
