The software-raid tag has no wiki summary.
0
votes
0answers
13 views
Installing LILO to software-RAID1 with failed item
Item /dev/sda1 of software RAID1 /dev/md0 has gone to a better world. md0 is mounted to a root / directory, and it contains /boot directory.
My lilo.conf configure is
boot=/dev/md0
root=/dev/md0
...
0
votes
1answer
37 views
Software Implementation of RAID 10 on a Windows Server 2008 running on Amazon EC2
Does anyone know of a software implementation of RAID 10 that will work on a Windows Server 2008? Specifically I'd like to use it on a virtual instance running on Amazon's EC2, connected to EBS ...
0
votes
1answer
84 views
Creating RAID1 on Windows Server causes not enough disk space error
I have three disks. Disk0 (boot), Disk1 and Disk2. Disk 1 and 2 are both unformatted and unallocated drives. I am trying to mirror Disk0 to Disk1. They are both Dynamic and are both the same size ...
0
votes
2answers
32 views
recovering data from raid1 component disk
Need to recover data from raid1 component disk using ubuntu live usb disk. The existing software raid was broken. After many attempts, I removed degraded raid setup from BIOS but ubuntu live could not ...
-1
votes
2answers
109 views
How reliable is CentOS 5.x RAID 1? I'm considering the SuperMicro MicroCloud product which has everything i need except for hardware RAID
The SuperMicro 3U blade server looks very promising - MicroCloud!
If i configure RAID 1 on the 2 SATA drives in each of the blades, how would that work out in terms of reliability?
Compared to 8 1U ...
-1
votes
1answer
23 views
IRP/DRP for CentOS software RAID
We're finally trying to start doing things right by getting proper servers. We've got a HP server (With B110i but it's not being used as RAID controller) and it's running a CentOS 5 derivative with a ...
5
votes
2answers
98 views
Convert linux software raid from raid5 to raid6
I currently have a file server with 3 1.5TB disks in a RAID5 array. Since it's pretty much full, I got three additional disks (also 1.5TB each).
Now I'd like to switch to RAID6 since 6TB space is ...
0
votes
2answers
53 views
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 ...
1
vote
1answer
38 views
“hot swapping” linux md raid1 - does re-mounting file-system temporarily read-only enable safe disconnection?
There's is an ext3 filesystem on top of Linux md raid1, array consists of two hard drives. Various services, including databases run on and write to it.
Let's say for argument's sake that to minimize ...
0
votes
2answers
75 views
Creating a partitioned raid1 array for booting a debian squeeze system
I'd like to have the following raid1 (mirror) setup:
/dev/md0 consists of /dev/sda and /dev/sdb
I created this raid1 device using
mdadm --create --verbose /dev/md0 --auto=yes --level=1 ...
2
votes
2answers
80 views
Does Windows Server 2008 software RAID-5 protect against bad clusters?
I have tested rebuilding a Windows Server 2008 RAID-5 after a whole disk fails, and this works pretty well. It's a bit harder to test a few clusters going bad.
Will Windows detect this, correct for ...
2
votes
1answer
46 views
Reboot during software RAID1 rebuild?
I have two disks in a software RAID1 in OSX 1.6
One of them failed, and I'm rebuilding it now but it is taking 10 hours to do...
I was wondering if it's safe to shut down and continue this at ...
4
votes
1answer
83 views
Recovering linux software RAID array without removing it's items
I have linux software raid (RAID10),
md2 : active raid10 sda6[4](F) sdd5[3] sdc5[2] sdb6[1]
390620160 blocks 64K chunks 2 near-copies [4/3] [_UUU]
which has degraded state. Can i start recovery ...
1
vote
1answer
137 views
Ubuntu EC2 Raid0 Ephemeral — SSH connection after reboot
First, I launch a fresh large instance using the Elestic AMI ami-c162a9a8. Initially, I run:
df -h
/dev/xvda1 9.9G 814M 8.6G 9% /
udev 3.7G 4.0K 3.7G 1% /dev
...
0
votes
1answer
72 views
Software Raid 5 in Enclosure - Server Crash - Hope?
I'm a software guy. I have inherited a Windows 2008 server that had a 4 disk raid enclosure (one of those Rosewill ones from NewEgg I think) connected to it via eSata. The Windows server was ...
-1
votes
1answer
44 views
Filesystem encryption settings during install?
I'm installing CentOS 6.1 on a server and exploring the encryption settings in combination with software RAID.
Should I encrypt the drive partition, the software RAID device, or
both?
Should I ...
0
votes
2answers
78 views
Forgot to create a second RAID for swap partitions in Software RAID 1. Will it work?
I have a Ubuntu 11.10 headless machine setup with Software RAID 1. It has two drives, each drive has a main boot partition (sda1 & sdb1) and a small swap partition. I created a raid for the boot ...
0
votes
1answer
37 views
Debian MD software nested RAID0+1 autoassemble issues [closed]
I'm starting out with software RAID on Linux and hit a roadblock when using a nested RAID schema. I have three small disks that I'm RAID0ing, and then RAID1ing with a partition on another larger HDD. ...
2
votes
1answer
56 views
Does my server have software RAID 1 set up?
I recently got my dedicated server it has 2x 1TB HDD's, so I asked for software RAID 1 on set-up and my provider asured that server have RAID 1 (software). I tought that if I will run RAID 1, I will ...
0
votes
1answer
61 views
Bandwidth efficient software RAID [closed]
I have this crazy idea .. that might just work if I find my missing piece
Take network with 40 windows workstations (on 24 hours)
Each machine uses 20 GB out of 500 GB capacity
Install free copy of ...
2
votes
2answers
45 views
UnRaid software raid - CentOs
I have a linux ( CentOS ) server that has 2 hard drives, and it configure by software raid1,
Now I need to un-raid hard drives, and use both of them.
How can I Un-raid them ? ( I just has SSH access ...
0
votes
1answer
58 views
Redundancy on the Freenas install itself?
I'm wondering what kind of redundancy I can put in place for the Freenas install itself. If the drive that Freenas is installed on fails, does that mean all my raid volumes are gone since its all ...
0
votes
1answer
64 views
Allignment of ext3 partition on LVM RAID volume group
I'm trying to add a partition on a LVM that resides on a RAID6 volume group and fdisk is complaining about the partition not residing on a physical sector boundry.
My question is, how do you ...
0
votes
1answer
51 views
mdadm scheduled check [closed]
I now have several devices that start the monthly mdadm scheduled check. I can let them all run monthly, stagger the checks, or disable them completely. I had the misfortune of several disks turning ...
0
votes
1answer
59 views
RAID 1 with motherboard software or SiI hardware?
I have to setup 2 servers with RAID 1 and the company cannot provide funds for the hardware needed until december, here is the hardware available:
Computer A
OS: CentOS 6.0
MB: EP41-UD3L
RAM: 4GB
...
1
vote
0answers
126 views
MySQL INSERT … SELECT renders server unresponsive
Solution: Although I haven't found a proper solution yet I'm at least sure that this is purely a disk I/O problem and has nothing to do with MySQL...
I have a MySQL server (5.1.54-1ubuntu4-log) ...
0
votes
1answer
47 views
Grub install devices & Software RAID
Server has a software RAID 1 (sda+sdb) configured as /dev/md0 device.
Later system upgrade was launched and grub updated. Now it promped to select grub unstall devices from the list to finish update:
...
0
votes
2answers
158 views
How to remove swap partitions from RAID 1 Array on Ubuntu?
Can anyone point in the right direction on how to remove SWAP out of a RAID1 configuration on Ubuntu 10.04 server? According to the Ubuntu Advanced installation guide, here, it said to add swap to the ...
0
votes
4answers
174 views
What RAID Level Should Be Used
I am working on a server build project for work and have inherited the following items that I need to figure out the best way to handle and configure.
2 of these: I/O Crest SY-PEX40008 PCI-e SATA ...
0
votes
1answer
83 views
identifying and cloning the superblock of a raid0 mdadm v0.90 array
/dev/sdb13 174706938 976768064 401030563+ fd Linux raid autodetect
The size of that partition is 802061126 sectors. From what i read - mdadm should have placed the actual superblock ...
2
votes
1answer
99 views
FreeBSD vinum striped (RAID0) volume - performance issues
I've experimented with different striped volumes in vinum under FreeBSD 8.2-release. I have current hardware (Intel i5 processor, adequate MB and 8GB RAM).
My test-setup consists of 2 or 4 disks in a ...
0
votes
2answers
143 views
How do you know if your Windows Server 2008 R2 Software RAID has failed? [closed]
Possible Duplicate:
How do you monitor the health of a mirrored disk in Windows?
I have software RAID (RAID-1) enabled on 2 pairs of Drives on Windows Home Server 2008 R2. To test the ...
0
votes
2answers
132 views
md-RAID5 - How fast should it be or where is the bottleneck?
I set up a new server with a LUKS encrypted RAID5. On the former server, the bottleneck was definitely the CPU, as it was a 7y old single core and the load went up to 100%.
Now it is different. I ...
2
votes
1answer
157 views
Software RAID1 ready to fail - How can I degrade manually?
I have a Centos 5.4 server in production with 2 drives in software RAID1.
The last days /var/log/messages has a lot of messages, showing that one of the drives is ready to fail:
Sep 23 00:48:38 ...
1
vote
1answer
142 views
Replacing a PERC S300
The PERC S300 card that came with our Dell PowerEdge T110 servers is Windows only (see here). As a result, we're looking for an alternative that works under Linux.
We had planned to use software RAID ...
2
votes
1answer
183 views
e2fsck / resize2fs problems
I've got 6 drives (each 1.5T, all same model and firmware revision) that are part of a RAID5 array. The RAID5 makes a LVM volume group and a logical group. The latter contains only one ext3 partition.
...
0
votes
2answers
138 views
Can I configure a RAID 1 on the Dell Poweredge 860 with the onboard SATA Controller
Is there a way to set up a RAID 1 with two SATA HDD on a DELL Poweredge 860 that has no specific RAID Controller? I want to use the on board SATA controller to set up my RAID 1.
0
votes
1answer
201 views
SCSI error: return code = 0x08000002, sense key: Aborted Command
The kernel logs:
ata2.00: exception Emask 0x0 SAct 0x7fffffff SErr 0x0 action 0x0
ata2.00: irq_stat 0x40000008
ata2.00: cmd 61/08:f0:6f:5b:97/00:00:00:00:00/40 tag 30 ncq 4096 out
res ...
3
votes
2answers
259 views
Slow DL360 Smart Array P400i RAID
We recently acquired two "decked out" DL360's, complete with the Smart Array P400i RAID raid controller, 512MB BBWC, and (6) 10k SAS drives.
They are configured in a RAID 1+0 set up, running LVM and ...
0
votes
1answer
99 views
spares missing on ubuntu mdadm software raid 5 how to disable?
I want to understand and if it makes sense, disable the alert message I receive about spares missing on my ubuntu linux software raid 5.
I used mdadm and set up a /dev/md0 raid volume made up of 3 ...
1
vote
1answer
71 views
Hot swap failed software RAID drive with Windows Server 2008
Does Win2k8 natively handle hot-swapping of a hard drive?
I have an existing server with 2 hard drives in it that are currently setup in a hardware RAID-1 configuration; they are each hot-swappable. ...
0
votes
1answer
218 views
LVM-on-RAID vs RAID10 vs RAID6
In the spirit of the question LVM mirroring VS RAID1 I thought I'd push a bit further.
Suppose I have 4 identical hard drives (e.g. 1TB) that I want in a RAID setup for a backup/media server. LVM ...
5
votes
1answer
193 views
Poor Linux software RAID 5 performance with NCQ
While salvaging a 2-disk failure in my 3-disk RAID 5 setup, I happened to notice reconstruction was faster with NCQ disabled (~90M/sec) than with the NCQ enabled (~50M/sec). Running bonnie++ to ...
0
votes
0answers
74 views
Configure Windows RAID-5 “drive failed” timeout?
When a hard-drive controller detects an error, and needs to remap a sector, the drive normally becomes unresponsive for the seconds (or possibly minutes) it takes to try to complete the re-mapping.
...
0
votes
1answer
88 views
Missing RAID 6 array + LVM volume after hard reboot
After a restart which stalled, I did a hard reboot and now mdadm can't see the RAID 6 array anymore, LVM can't find the volume which was on that raid array. I have looked into /etc/mdadm/mdadm.conf, ...
1
vote
2answers
277 views
Software RAID 5 vs RAID 6 performance
I had an original software RAID 5 setup under Ubuntu 10.04.03, 3 devices, 64k chunk. Performance was acceptable:
# 4GB write
dd if=/dev/zero of=ddfile.big bs=1MB count=4k
4095290816 bytes (4.1 GB) ...
1
vote
1answer
65 views
Warnings about partition tables on /dev/md? during preseed installation. (Debian Lenny)
I'm setting up an environment to install many Lenny machines at once and I need to avoid any dialog with the process, corner cases aside. One thing that consistently troubles me is that after my ...
1
vote
1answer
676 views
How can I re-assemble (or recover data from) a mdadm RAID5 array?
I'm trying to recover whatever data I can from a RAID5 array of a failed NAS.
The disks were physically moved to another server that so they could be imaged,
but Knoppix "helpfully" detected and ...
0
votes
2answers
91 views
rebuilding raid5 array
I inherited a machine that was running Debian with a RAID 5 array. I installed a bunch of updates (1700 or so) that the OS recommended, then after rebooting, the raid array did not mount. The device ...
3
votes
3answers
102 views
Degraded partition in RAID5 system
I've got a server running Debian Squeeze and a 3x 500 GB-drive RAID5 system which I haven't set up myself. When booting, the status of one partition in the RAID-array seems to be bad.
md: ...
