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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129 views

Preseeding Ubuntu partman recipe using LVM and RAID

I'm trying to preseed Ubuntu 12.04 server installation and created a recipe that would create RAID 1 on 2 drives and then partition that using LVM. Unfortunately partman complains when creating LVM ...
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1answer
125 views

Clariion CX300: Removing system disks from a RAID group?

I have a raid group that includes every disk my DPE2. I want to remove the system disks (0-4) from this RAID group. From what I read I should i put them in their own RAID group and avoid storing ...
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1answer
834 views

Upgrading a PERC h310 to a PERC H710 mini RAID controller on a Dell R620

I have an ESXi 5.0 Free license host using an internal Datastore (RAID 5, 5 Disk) that was configured with a Dell PERC h310 RAID controller. The disk performance was very poor, so I upgraded to the ...
3
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1answer
61 views

ZRAID1 pool size bigger than expected

I have 3x 4TB drives for a ZRAID1 config (single parity drive) After running zpool create data zraid1 sdb sdc sdd I have a volume that's 10.9T in size, which is what I would expect from a stripe ...
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2answers
161 views

SSDs, Hardware RAID, and TRIM

I was told by my datacenter that all HW raid, specifically the LSI 9260-4i hardware RAID controller, does not support SSD TRIM command. My question is, are there severe longevity/speed issues due to ...
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1answer
82 views

Expanding raid 5 luks partition

I have just bought 2 new drives to my raid 5 array. I have successfully added them to the array and resynced. I now have a /dev/md4 drive that is 16 TB, but the crypt-luks partition md4p1 is still 12 ...
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1answer
147 views

Boot failed, continue to look for media

I have a new server that runs a RAID 1. I've had it off for about a month and I turn it back on and I am getting "boot failed, continue to look for Boot Media" and it just loops. Did my RAID die or ...
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4answers
342 views

Dell R320 RAID 10 with CacheCade

I'm looking for a higher-performance build for our 1RU Dell R320 servers, in terms of IOPS. Right now I'm fairly settled on: 4 x 600 GB 3.5" 15K RPM SAS RAID 1+0 array This should give good ...
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2answers
218 views

Missing over 100GB of Space on sda1 RHEL

I have a server setup with a RAID 5 using (3) 500GB drives, 1 as a spare so unused in the RAID. So in my mind i start out with 990GB with the RAID 5 in place. When looking at DF or the built in disk ...
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2answers
229 views

Fedora, fsck fails at boot

I'm facing a problem in my server during the startup. This is my actual configuration: 320GB each. Raid1 -> /dev/md127. Working. /dev/sda /dev/sdc 1000GB each. Raid1 -> Use to be /dev/md126, ...
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0answers
28 views

DIR $file “File Not Found” vs DIR $filedir shows it…not permissions, not USB

I was having this problem before on a USB drive, but now it's happening on my main RAID5-backed hard disk: 2013-10-17 9:37 C:\>dir "C:\Shares\Shared\Reference\Safety Management System\Vid eo ...
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3answers
281 views

How to identify faulty drive on a HP DL160 G6 - P410 Smart Array

I have a HP DL160 G6 Server with 4 HP SAS drive, firmware have been updated to the latest on the HD and the Smart Array... The issue im having is that one of the disk have a steady amber light turned ...
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2answers
76 views

What is the correct way to create new raid5 in Linux?

I added some new disks, and tried to create new array, using: mdadm --create /dev/md/2 --level=5 -x 0 --raid-devices=4/dev/sd{a,b,c,g}2 It creates the array, but after reboot - it's gone. What ...
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1answer
61 views

Growing a hardware RAID-10 array

I am interested how to grow a RAID 10 array on Windows SBS 2011 machine? Basically I have added two additional disks, expanded array and now I want to grow my c: filesystem to take advantage of new ...
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2answers
167 views

How to move RAID 1 to RAID 1+0

I have two HP disks in RAID 1 (300 Gb), and would like to at 2 additional disks in RAID 1+0 having in total of 600 Gb on C:. I would like to know is it possible to do it using Array Configuration ...
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1answer
71 views

MegaCli: when did a drive fail?

Using MegaCli64, is there a way to find out when a hard disk failed? I.e., /opt/MegaRAID/MegaCli/MegaCli64 -ShowSummary -aALL shows Connector : Int.Ports ...
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1answer
650 views

What is the correct way to install software RAID 1 in CentOS 6.4?

I'm going to install CentOS 6.4 on HP ProLiant ML310e Gen8 server. This server has fakeraid controller so i decided to use software raid. The problem is that i don't know how to correctly install GRUB ...
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1answer
149 views

How do I check if server really has RAID 10 enabled?

I have a dedicated server with 4 hdd and RAID 10, with Cent OS 6.4 How can I check if RAID is really enabled. I'm in doubt because on another server with RAID 10 enabled, I can see in /dev sg0 sg1 ...
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0answers
35 views

How to rearange disks with a new SSD

Here is the problem: I have a Debian server with only 4 disk bays. At the moment there are 4 x 1GB SATA disks in software RAID 10. I'd like to swap one of the SATAs with a 1GB SSD disk and move the OS ...
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1answer
366 views

CloudLinux server won't boot [closed]

I have a cPanel server, running Cloud Linux, it's a dedicated server that originally ran CentOS 6.4 and SoftRaid 1. I converted it to CloudLinux after a fresh re-install. I didn't have a need to ...
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1answer
43 views

Witch is the RAID level meeting the follwing critiria? [duplicate]

We have 3 HDDs, same capacity (2TB). Witch RAID level allows me to use 4TB of space and in case any of the 3 HDDs fails (but only one) i have all the 4TB untouched and safe?
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1answer
33 views

Mirror drives on Exchange 2k3 server, larger drives than OS partition RAID ok?

I have an Exchange 2k3 server that uses a backup process that is at times unreliable. Part of the process is to nightly truncate those transactions logs (we receive ALOT of email). Currently I have ...
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1answer
198 views

Does Dell's PERC S100 RAID controller support hot-swapping?

I have a Dell Poweredge R310 w/ a PERC S100 RAID controller, and want to replace & add HDDs. The R310 backplane itself clearly supports hot-swapping, but I can't figure out if the PERC S100 ...
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1answer
107 views

RAID 5 drive upgrade

We have an HP ProLiant ML350 G5 server with an 8-bay RAID 5 array configured on a Smart Array E200i controller. The system volume and data are on the same logical drive. The drives are 72GB each and ...
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2answers
88 views

Migrate 2-drive RAID1 Hyper-V host (4 VMs) to 4-drive RAID6

I have a Hyper-V server w/ 2x500GB drives on RAID1. I would like to replace these with 4x1TB drives on RAID6. I have four VMs on one host, and can get by with just restoring the VMs on a new host ...
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2answers
187 views

Remove a duplicate lvm physical volume uuid?

After upgrading a rhel 5 server today I rebooted to the new kernel: curr=2.6.18-371.el5PAE prev=2.6.18-348.18.1.el5PAE. In the boot sequence I saw a message indicating Logical Volume Management was ...
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1answer
61 views

Server DR configuration

I have 2 Dell PowerEdge Servers, a Dell T310 and a Dell T320 - both running Windows 2008 Server. My main application runs on the T320 (with Raid 1 on the data drive - configured using Dell utility), ...
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1answer
59 views

Sharing an EC2/EBS RAID10 Array using NFS

I created a 10 disks RAID10 using EBS on AWS EC2 using mdadm on a ubuntu 12.04.2 LTS instance. Let's call this instance A. It works fine and I can create files and folders perfectly in the volume. I ...
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2answers
122 views

RAID / FS choice for 12 hard drive machine?

I'm going to purchase a 14 bay HP 2U server with ECC memory and bunch of 3TB enterprise SATA drives. I would prefer to make 2 x RAID6 with 6 drive each. This will be used for local office storage and ...
2
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1answer
2k views

Poor Disk Performance on VMs; Host using PERC H310 RAID 5

I have a Dell R620 running 5 500GB 7.2K RPM SATA 3Gbps 2.5in Hot-plug Hard Drives in a PERC H310 controller (which I am beginning to regret buying). I am getting awful read/write speeds on Linux ...
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2answers
244 views

Slow software raid with SSDs

We have moved a web application with an Oracle database to a new server because the old one was dying. The old server had two mirrored hard discs plus a separate non-mirrored SSD for the Oracle ...
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0answers
116 views

Windows Deployment Server Answer Files for PC's with RAID Controllers

I currently have a Windows Deployment Server running on Windows Server 2008 R2 Standard, and so far it has worked without any issues. I am able to capture and deploy images to the majority of the ...
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1answer
44 views

Improving Hard Drive controllers and Software RAID [closed]

I believe the biggest pro of hardware RAID is that, providing your RAID controller is battery backed, you can enable write-back cache. This can also be achieved similarly through software RAID with ...
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1answer
54 views

Does RAID1 also checks for corruption? [closed]

I have two 1.5 TB disks, and I don't trust both of them because of weird noises and bad clusters. I was wondering if I put them in a software RAID1 array (mirrored volume in Win7) it will write my ...
2
votes
1answer
137 views

Is my hard disk failing?

I've just had the hard disk on my server replaced. It was part of a RAID 1 array. The sdb1 partition keeps failing every few hours now. # cat /proc/mdstat Personalities : [linear] [raid0] [raid1] ...
2
votes
1answer
213 views

mdadm: failed to write superblock

I'm quite new to RAID, and I'm having a problem. My server warned me that some drive is faulty, so I investigated: root@server:~# cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid10] ...
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0answers
343 views

HP P410 “Parity Initialization Status: Initialization Failed” How to fix?

I'm using HP P410 raid card with BBU with 12 x 3TB drives on RAID50 After a power outage at the datacenter, the hpacucli shows this: Parity Initialization Status: Initialization Failed However, all ...
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votes
1answer
221 views

Solaris10 Hard Disk Information

I am trying to inventory hard disk information remotely (serial number, disk size, manufacturer...) but am having trouble. I know the drive(s) are configured under a raid controller, but can I view ...
0
votes
1answer
100 views

PowerEdge 2850 RAID 0 Configuration - Drive not found

I have two 73GB 15,000RPM HDD in my PE2850 that I need to stripe as one logical drive so I can install MS SBS 2011 (which requires an 80GB volume minimum). I enabled RAID in the BIOS and paired the ...
0
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1answer
294 views

Fakeraid doesn't show up in /dev/mapper

I have the following setup: 1 256GB SSD / Win8-Ubuntu 13.04 UEFI Dualboot 2x1TB in RAID 1 (Detected and working) 2x4TB in RAID 1 (Not Detected not showing up in /dev/mapper) The problem is that I ...
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votes
1answer
274 views

Adaptec 5405 fails to rebuild array

Yesterday one of the disks in RAID 1 mirror attached to Adaptec 5405 died and was replaced by new one but after about 2 hours of rebuilding array went offline. Hoster staff updated firmware on ...
0
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1answer
73 views

Does the built-in CentOS software RAID distribute writes?

Will I see a write performance increase going from single disk to CentOS Software RAID10? Any industry estimates on the % increase?
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1answer
360 views

Vpd r/w failed This is likely a firmware bug on this device [closed]

Does this mean my RAID 1 device is failing? EDIT: seeing this is a raidcare issue. How can I pull the specs and download/install the driver? netlink: 12 bytes leftover after parsing attributes. ...
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1answer
31 views

How to restore windows server raid 1 setup?

I have a machine that was running software windows raid 1. Somehow, after restart raid configuration failed and now two drives are separate volumes. I can't find an option to restore raid ...
2
votes
1answer
165 views

How to get email alert if one of raid 1 disks fails?

I need to know how can I get email alert if one of raid 1 disks fail to work/crashes. I have CentOS 6.4 64bits, software raid. I did some mistake folowing this tutorial, because it was a bottom note ...
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2answers
151 views

grub always will boot to grub command line

I have a remote CentOS 6.4 server (with KVM access), when I received the server it was running with LVM on single disk (sda) I managed to remove LVM and install raid 1 in sda and sdb disks the ...
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2answers
114 views

M1015 pass-through and hot-swap in Linux with md raid (IBM x3620)

I'm setting up a small, but hopefully durable server for a student community, and the hardware is an IBM x3620 M3 with a builtin M1015 RAID card. To make the setup future proof and avoid vendor ...
2
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1answer
53 views

5 dead hard drives in a span of 2 months - what should I be checking?

So we got a nice new HP DL380 server with a fancy RAID card about one year ago. 2 months ago a hard drive failed. Thank goodness for RAID5... except that the RAID card only sort of worked and the ...
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2answers
609 views

HP P410 RAID CARD Issue - unassigned drives not detected by the OS

i just bought lot of HP DL180 G6 Servers, it's using HP P410 RAID Card, i plugged 12 x 2TB SAS Drives + 2 x 73GB SAS (for OS - RAID1) all drives showing up IN RAID Creating array page, so i just ...
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1answer
71 views

Debian Software raid not getting synced

my Software-Raid under Debian suddenly says: Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md2 : active raid1 sda3[0](F) sdb3[1] 2917156159 blocks super 1.2 [2/1] [_U] md1 : ...