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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Converting Non-Raid to Raid

I have a server that currently has one 1TB drive in it. I just bought a 1TB drive to put in Raid-1 with it. The server already has data on it, so my question is what do I have to do to make it a raid ...
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14 views

RAID Configuration P2000 and Dynamics AX 2012R2

we are in process of implementing dynamics ax 2012r2 in our office and our hardware is: 2 x HP Proliant DL380 G8 1 x HP P2000 with 18 15k SAS Disks 2 x 10gbe Switches We will be doing a straight ...
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0answers
21 views

How do you repair a Ubuntu 14.04 RAID-LVM-DM-CRYPT-LUKS Physical to Virtual system that won't boot?

I can't get a Ubuntu 14.04 Virtual server to boot correctly. It's recently been cloned "dd if=/dev/sda of=vmimage" The Physical has a RAID1-LVM-DMCRYPT-LUKS configuration, The boot sequence aborts and ...
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4answers
459 views

How do I configure RAID 5, especially stripe size, with 24 x 1.2 TB drives for CentOS 6?

For a Dell R920 with 24 x 1.2TB disks (and 1TB RAM), I'm looking to set up a RAID 5 configuration for fast IO. The server will be used to host KVM VMs that will be reading/writing files of all sizes, ...
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1answer
38 views

HP Smart Array P410 Stuck in Ready for Recovery 00.0%

We are using smart array disk controller P410 by HP on our supermicro server. Sadly of the HDDs in a RAID10 Array was damaged and we were forced to change that specific hard disk. After 3 days and ...
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1answer
12 views

mdadm array is active but is not listed

I am running Ubuntu Server 12.04. I did apt-get upgrade and received a warning from mdadm. update-initramfs: Generating /boot/initrd.img-3.11.0-24-generic W: mdadm: the array /dev/md3 with UUID ...
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3answers
719 views

Why is my RAID1 read access slower than write access?

I have done some simple performance tests and it seems that reading from my RAID1 is slower than writing: root@dss0:~# for i in 1 2 3; do dd if=/dev/zero of=/dev/sda bs=1048576 count=131072; done ...
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1answer
17 views

EPC mode on Seagate Constellation using Linux

I need to set EPC mode on Seagate Constellation disks connected to LSI 9690SA-4l controller. This is because the controller is not compatible with the disks unless the EPC mode is set – according to ...
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1answer
39 views

Data recovery from deleted raid array

Hello I deleted a raid 1 array on a hp b110i and I wanted to know if it is possible to recover the data. Also if Windows server was on the array that was deleted can it be recovered. Thanks
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2answers
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LSI MegaRaid live conversion from RAID 6 to RAID 0+1

I've currently got a lovely working server that has an LSI 9265-8i RAID card in it with 4x1TB RE4 drives, also running CacheCade Pro 2.0 with 2x180GB SSDs in RAID1. I currently have the main array ...
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1answer
50 views

Fixing partition table after writing 0s to beginning

I have a sw raid10 setup like: /dev/sdX > partition /dev/sdX1 > raid md0 > lvm > fs. I'm an idiot, and wrote 4gb of 0s to /dev/md0 with dd dd if=/dev/zero of=/dev/md0 bs=4k count=1000000 ...
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1answer
46 views

Steady red light on 2 HP SAS drives in RAID 1

I have a HP ProLiant web server with two HP 300GB SAS SFF 2.5 inch drives (Model: HP 507127-B21). Both drives have a solid red light, however there is no indication within the management software that ...
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0answers
19 views

Why MegaCli always returns blank?

Similar to this question (MegaCLI always returns blank output) with some differences. I am using perc h710p raid controller on Dell Ubuntu box. I download 1.01.39_Linux_Cli.zip (according to ...
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0answers
28 views

CentOS 6.5 hard disk not detected on ibm x 3650 7945 server

I tried to upgrade firmware and used BoMC to upgrade firmware, but the hard disk is not getting detected while installing CentOS 6.5. How should I get it detected, does it related to RAID ...
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1answer
38 views

HP ML350 Gen8: error erasing disk cciss/c0d0 on PXE

I Have a ML350 Gen8, that on first PXE Boot, will ask me whether I am sure I want to erase raid controller cciss/c0d0 giving me an option of Yes | No. This only happens when the disks are brand new ...
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2answers
64 views

Will expanding my Synology Hybrid RAID delete the data on the initial disk?

As the title states, I currently have my Synology NAS with a single 4TB drive in it. I now wish to expand this with another 4TB drive. If I expand the volume (it's currently setup as SHR) will the ...
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0answers
10 views

openSUSE encrypted root over RAID, given Yast doesn't support encrypted root?

This is for a fresh install of 13.1 I'll be making. Four drives in RAID10 need to be on the bottom. I'd rather the RAID be software, MD, rather than hardware, though I'd use hardware RAID if all else ...
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1answer
26 views

Repair or recreate virtual drive on raid array

I have raid array intel srcsas18e. Today I saw that OS was shutdown and status two hdds is "foreign unconf bad". Both hdds were in one virtual drive. But I do not find this virtual drive in a config. ...
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1answer
31 views

Read RAID disks on another RAID adapter

I have a server with a failed motherbord. The motherboard has an embeeded Adaptec RAID controler. The server has 3 SCSI disks in a software RAID5 array (so the RAID controller is used only as a SCSI ...
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0answers
10 views

IBM x 3650 M4 - enable disk slots 4-7

I have a x3650 with a ServeRaid 5110 controller. I have six disks installed - first 3 as one RAID5 array, and I want to set the second 3 up as another RAID5 array. However, only slots 0-3 seem to be ...
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1answer
111 views

Kernel panic after boot Centos 6.5 HP DL320 B120i HPVSA

Im working with a new HPDL320 micro server (gen8-2) with a HP Dynamic array B120i My problem is after the setup. I provided the DiskDrive to the installer and everything is fine. at first i used kick ...
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1answer
33 views

Adaptec configuration has changed - Why can't it show me what it sees before blindly “accept” or “reject”ing?

I work with Adaptec cards on a regular basis; 2405, 5405, 6405e, 6805, and a few others. I am dismayed by the BIOS' terseness and lack of any utility at all. I can set card setting toggles; but the ...
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0answers
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Using Small RAID5's to prevent data loss [migrated]

I'm currently using 3 RAID5 controllers in each of several media systems. This is being done in an attempt to preempt future data loss. I store large amounts of scanned, video and audio historical ...
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30 views

Software-RAID with ext4 but without 64bit support

last year I set up a Software-RAID5 with 5x3TB yielding 12TB of usable capacity. Just today, needing more storage, I have finished growing the RAID to two more 3TB disks: Personalities : [linear] ...
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1answer
52 views

Reconstructing the disk order in RAID 6 with 7 disks

a little background to this question first: I am running a RAID-6 within a QNAP TS869L external RAID/NAS system. I started with 5 disks of 3 TB each back in the day, and later added another 2 disks of ...
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1answer
65 views

Degraded RAID1 on debian 7.5

I am in a bit of a problem with my root server and a degrading RAID. Unfortunately, I'm no expert when it comes to RAID. System informations: Debian 7.5, SSD software RAID1, problem occur since a ...
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0answers
62 views

SuperMicro 119-7 - Install Problems 'no device driver found'

I have a set of servers that had Debian installed, and need to have Windows Server 2012 R2. Supermicro 119-7 / 10274-WRFT+ MegaRAID SAS 9266-8i Mount R2 in a flash drive, boot from it in UEFI mode ...
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2answers
62 views

Move OS from RAID5 array to RAID 1 arrays

I want to give a last boost to my old ProLiant ML350 G5 server which just needs to be reliable for a few more year only ! With a defined budget of about 1500$ (I do not have more), i plan to replace ...
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1answer
63 views

Anyone tried dd'ing Raidmembers?

I want replace all disks in a 10 disk raid6 (linux software raid). I could do this by pulling a disk, let the array rebuild, rinse, repeat. But this would take a very long time, and cause 10 ...
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0answers
66 views

Dell PERC 6 - virtual drive goes offline because a drive went into the “ready” state

I have a Dell PowerEdge 2950 with four drives, and this raid controller (Dell Perc 6/i): lspci -nn RAID bus controller [0104]: LSI Logic / Symbios Logic MegaRAID SAS 1078 [1000:0060] (rev 04) ...
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2answers
73 views

RAID Configuration & File System - What to RAID 1 and what to RAID 0 [closed]

I recently received my first server - it is a HP ProLiant 320e G8. I've installed Debian Wheezy on it. I had to disable the HP Smart Array controller (B120i) because it was creating problems with the ...
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1answer
49 views

How to copy RAID 1 HDDs from one server to another Identical server

I have one IBM X3100M4, type 2582 windows server and having 2 x 500 GB HDDs in RAID Copy. Now brought new server and having blank HDDs. How can I copy RAID HDDs from Old server to new server? I have ...
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1answer
38 views

Missing partition from RAID 0 array - what can be recovered?

System is Fedora Linux, there is RAID 0 array set up via mdadm that have bound together partitions /dev/sda4 and /dev/sdb4. Lately, /dev/sdb failed and became unreadable. Naturally, I started ...
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1answer
84 views

Are FC and SAS DAS devices standard enough?

Before I ask my questions, here is some background info that may or may not be useful: For the first time I find myself needing a DAS solution. My priority is data through-put in a single direction. ...
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2answers
100 views

HP Server with P420i - Migrate to RAID 5 Error

I have an HP DL360 G8 with a Smart Array P420i with 3 physical drives, currently setup RAID 0, I would like to migrate to RAID 5. When using the Smart Storage GUI when I attempt to migrate the ...
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1answer
28 views

Raid1+0: create stripe over two /dev/mdx on partition or not?

Given that I haven't found a way to define how a Raid10 is created with mdadm, i went the Raid1+0 solution. How to display/define Mirror/Stripping pairs with mdadm mdadm --create /dev/md0 --level=1 ...
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2answers
90 views

Dell Power Edge R515 - Replacing a Bad Hard Drive in a RAID

I've ordered a new hard drive to replace a bad one in a Dell Power Edge R515. The manual covers obvious topics regarding physical replacing of hard drives, but I've never done this before on a ...
2
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2answers
81 views

When to use hot-spare?

On my newly purchased HP MDS600 with 70x 4TB Nearline SAS disks, I now need to configure the disks, and I want raidz2, so the raid sizes follows 2^n+2. The options I therefore have are 7 raid sets ...
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1answer
54 views

How to display/define Mirror/Stripping pairs with mdadm

I want to make a standard linux software Raid10 over 4 HDD. The server has 4HDDs, 2 pairs from different vendors in order to avoid batch problems. I want to have the mirror over two different ...
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2answers
281 views

What steps should I take to best attempt to recover a failed software raid5 setup?

My raid has failed, and I'm not sure what the best steps to take are in order to best attempt to recover it. I've got 4 drives in a raid5 configuration. It seems as if one has failed (sde1), but md ...
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1answer
71 views

How to set two RAID1 on the HP SA-E200i controller?

I have an HP ML350 G5 with a RAID 1 between two SAS disks. I want to add 2 extra disks and configure a new RAID 1 separated from the other one. Reading this topic Multiple RAID arrays on E200i it ...
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1answer
63 views

Migrate Windows Server 2008 R2 to a RAID 1 Configuration

I have a Dell PowerEdge T110 server running Windows Server 2008 R2. It is a DC (among many other things) and runs my home network, but after 4 years in operation I am starting to get worried about ...
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1answer
81 views

Best practice on hot-swapping disk

I've been putting myself to find an learn more about the product before posting a question. Well, I've tried my luck and didn't got a proper answer to my questions. So I'm posting it here. Had an ...
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3answers
61 views

4 Disk - RAID(5) - 1 alleged faulty drive

I have a OWC Mercury Pro Elite Qx2. I have 4 4TB Hitachi drives setup on a RAID 5. One day, the red light came on indicating that my C drive has failed. I took it out, and put it on my docking ...
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1answer
57 views

How to view progress in ESXi of RAID recovery

We have a RAID configuration. After a failure when a new hard drive is being written to, is there a way to use ESXi to view the progress so we know how much longer until completion?
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1answer
38 views

LSI Raid 5 with 2 disks “not synced”

I have a system with a LSI 1064e SAS raid. The system is not booting, and when I enter the raid configuration utility, It says, that has 2 disc "Not synced". I didn't find the option to resync them, ...
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0answers
64 views

Solaris 9: Degraded mirror unmanageable with raidctl after drive replacement

We have a pair of Sunfire v20z's (WITH LSI MPT raid) that have each had one drive in their mirrors die. bash-2.05# cat /etc/release Solaris 9 4/04 s9x_u6wos_08a x86 ...
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3answers
56 views

3ware Raid Controller - Wrong Size after upgrading one disk

I have a 3ware raid controller. I replaced both 750GB disks by new 1TB disks. But the unit size is still 698GB. How can i "resize" the unit size to use the 1TB size. Screenshot: ...
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43 views

Upgrade Raid 1 to Raid 0+1 and bootloader issue

I am trying to convert my current RAID 1 to RAID0+1 and facing issue in installing bootloader - please have a look what i am doing. My current configuration is RAID1(2*10GB): [root@localhost ~]# ...
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4answers
292 views

RAID level confusion (MegaCli vs megasasctl output)

I'm utterly new to working with LSI MegaRAID controllers and I'm confused as to what RAID level I am actually running. My server is equipped with 4 disks, 4TB each and I would like to have them ...