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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RAID10 array lost after reboot | Amazon Linux

I carefully followed this procedure to setup RAID10 on Amazon Linux: https://mongodb-documentation.readthedocs.org/en/latest/ecosystem/tutorial/install-mongodb-on-amazon-ec2.html I also upgraded ...
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57 views

Will a H310 Mini or a H200 support Samsung SSDs (840/850 Pros)?

I've been searching around and struggling to find out of a H310 Mini or a H200 will run Samsung 840/850 Pros. I know Dell have their officially branded SSDs, but unfortunately cost is a major issue ...
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13 views

Is a PERC310 Mini compatible with an R610?

I'm going to purchase an R610 soon which is sans RAID card. The spec sheet lists 2x PCIe x8 + 1 "storage x4" slot. However none of the X10 series cards are listed on the spec sheet. I presume that's ...
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3answers
850 views

Is using nested RAID 6+1+0 a good idea?

Currently I have 24 disks of 500 GB, and I would like to create a bigger nested RAUD using a Dell Power Edge R730 server, having 4 times RAID 6 with six times 500GB each, over them I want to add RAID ...
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1answer
38 views

Which raid array will be best practices with seven 1.2 tb hdd system

I have a server which have seven 1.2 tb hard disks. I have to create raid array but i don't decide which raid i use? First of all, first and most important matter is security. At any cost i must not ...
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20 views

Linux softraid showing failed drive, but smartctl shows no errors

I have a RAID6 array that is offline (shows 3 bad drives): cat /proc/mdstat Personalities : [raid1] [raid6] [raid5] [raid4] md2 : active raid6 sdh1[11] sdg1[10] sda1[0](F) sdm1[9] sdl1[8](F) ...
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26 views

Recovering grub2 after raid1 disk change: stage1 not read correctly

After recovering from a raid1 disk change I cannot install grub2 any more. I think that I recovered from the disk change correctly (the raid array assembles, I can mount and access the data, etc.) but ...
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1answer
19 views

RAID5 array over-provisioning by creating smaller array?

I did actually read the following thread: How to over-provision an Intel SSD RAID Array via the Dell H700 PERC RAID Controller It did give much information, however not an answer to my question in ...
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1answer
35 views

Configuring FreeNAS on Hardware RAID

I have a server with 16 Gb RAM and 4x1TB HDDs configured as RAID 10. Now I have to configure that server for the FreeNAS, but I have found that the FreeNAS won't support the Hardware RAID. Instead, ...
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3answers
58 views

find out RAID level on HP DL360 server

I have a HP ProLiant DL360 Gen9 server which has three physical 900GB HDDs. Those three HDDs are in some sort of hardware RAID setup. RAID controller is HP 3239 and it uses hpsa driver. For OS it ...
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15 views

PERC controller and all 12 hdds in RAID6

i have a question about my DELL ds12-nv7, the controller RAID is perc 6i, i have 12 hdd. The card controller has 2 controllers. I can see that i have 8 hdd on controller 0 et 4 hdd on controller 1. ...
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88 views

Install CentOS 6 on HP ML 150 gen9 server with b140i raid controller

I have HP ML 150 with Smart Array b140i controller. I want to install CentOS 6.6, but the driver isn't built-in the ISO. I have download the Driver and install in the USB(dd). I need the command for ...
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1answer
61 views

Slow RAID & system performance on large file write

I'm moving a large VHD file to a new VM host over the network. I've checked and double checked every point of bottlenecking here and it is 100% the server doing the writing causing an issue. It's a ...
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2answers
53 views

Can I setup Raid 1 after the system is already running

I just finished installing owncloud server using centos 7. My data is located at /var/xxx and I dedicated the hard drive/dev/sdb just for this /var directory. After a while, I decided that I wanted to ...
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1answer
55 views

Restore RAID 5 HP P410

I have: P410 + 512MB Battery Backup 4x4TB in RAID 5 I changed the PSU today and after starting OS (Windows 2008 R2) the array is gone. ACU sees 2 HDD as unassigned and original RAID 5 as 2 OK ...
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35 views

Having trouble mounting an mdadm array. Corrupted Filesytem?

I have a server that crashed and won't power on. I don't care about the server, but I'd like to recover the data attached to 2 external usb drives that were mirrored (raid 1) using mdadm. This system ...
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1answer
41 views

Which RAID configuration is better for hypervised Virtual Machines with three 300GB SAS drives [duplicate]

Probably a noob question, but I'd like some guidance on which RAID configuration is best in this server scenario. I am aware of and understand the different RAID configurations, but am after guidance ...
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1answer
19 views

Is it possible RAID/LVM Stripe that can lose a disk/data but volume itself stays available?

Firstly, I want to make it clear I don't care about data loss, and I understand the risks involved. What I'm looking for is guidance and if what I am hoping for is even possible. My Scenario: I ...
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1answer
30 views

Raid device on rename appended with _0

I am creating various raid configurations. When I create a raid device say 5 with 3 disks mdadm --create /dev/md/md5 --level=5 --raid-devices=3 /dev/sda /dev/sdb /dev/sdc It does create a device ...
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1answer
68 views

CentOS 6: SATA link down when scanning for unused drives

I recently inherited a CentOS 6 server with 8 installed hard drives. 6 of these drives were going to be configured as an LVM, but never got that far. The drives are installed and, from what I can ...
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1answer
26 views

RAID 10 (2+2) and (4+4) - terminology or physical setup?

I understand what RAID10 (2+2) is (stripped mirror) whereby there are data are striped across 2 groups and each group have a pair of mirror devices (2 disks). This is how i have understand "2+2" For ...
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34 views

Server Frozen - RAID Card throws PD errors and BBU missing

Our server runs Win Server 2008 R2 and has an Intel Raid Card. We have been seeing PD errors from it. The PD errors have appeared on 2 drives out of the 8 in the system. We also saw errors like these ...
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8 views

LSI- Consistency check keeps restarting after completion

I have an Intel/LSI controller that keeps looping a consistency check after the creation of a RAID10 or a RAID6. All of the disks are fine from what I can tell (SMART is good, and they all pass ...
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2answers
45 views

mdadm not assemble after restart

I have 2 disk with the next structure: lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 3,7T 0 disk ├─sda1 8:1 0 2,7T 0 part └─sda2 8:2 0 931,5G ...
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3answers
90 views

How do you securely shred a file from a RAID 6?

I'm looking for a way to delete a file from a RAID 6 implementation in a secure fashion (shredding). Do I need to delete the file from the RAID, disassemble the RAID, wipe the free space of each ...
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1answer
27 views

why all hard drives in a HPC cluster must be of the same size and part number? [closed]

One of the hard drives of my HPCC is broken and I have to buy another one. I've heard it must be of the exactly same size and part number. Could anyone explain me why? Thanks
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25 views

Cannot restore RAID 5 configuration

We have recently come across a problem and we would like your input on what is the best way to solve this. We have a QNAP TVS-871 and it was configured as a RAID 5 Storage Device. Today the system ...
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1answer
52 views

Raid 5+1 considerations

I am charged with upgrading a persons private business network and was thinking of putting a bit of backup and centralisation. So for that i though of getting a small NAS with 4 drives and having 3 ...
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1answer
18 views

Can a RAID 10 array be transferred from a Windows box to a Synology (or other) enclosure? [duplicate]

Currently I'm debating about whether I want to use a spare workstation running Windows 10 and turn that into the enclosure for a 4x6TB RAID 10 array since it has decent hardware specs or wait until ...
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1answer
44 views

RAID mirror, combine 2,5 and 3,5 inch HDD, different capacity

I have two HDD, both are WD Black series, one is 2,5" and the other one is 3,5". Both have 64 MB of cache and 7200 rpm. The former one is 750 GB, the latter is 1 TB. I would like to create RAID ...
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295 views

Using Dell PERC H330 RAID controller with not-dell-certified SSDs

we think about replacing our Dell PowerEdge T100 (2009) with a Dell PowerEdge T330 for our small business. Up to 15 clients are using the MSSql Server, some fileshares and printers. The database size ...
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3answers
63 views

Datacenter steal data from raid 1 server

I have a server (HP DL380pG8) in one of data centers in my country. As I was thinking about securing my data, I was thinking about what if, someone in data center, extracts one of disks which are ...
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1answer
36 views

Upgrade RAID 10 with 7200RPM SATA

We have a Dell T320 with a S110 software RAID with 7200RPM SATA drives. The RAID level is 10 with four drives. I underestimated the demand on the disk, and it is now a major bottleneck of the system. ...
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2answers
51 views

How does does a Dell MD12XX DAS appliance show up on a server

I have a Dell PowerEdge Server with a HW RAID controller and a 12Gbs HBA SAS Storage adapter. I'm are looking to add more storage for backup/archiving purposes. I'm looking at using the MD1200 or ...
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0answers
35 views

How to match a drive seen by esxcli to the virtual drive seen by RAID storcli

I have a small project to collect the RAID-level information on VMware ESXi. I have a ESXi host with LSI RAID controller setup. I'm able to run storcli on the host to get the RAID controller ...
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2answers
35 views

HP Proliant RAID setup; does the order matter?

This should be a simple answer but I need to know before proceeding with my configuration. I have an HP Proliant DL380 G6 6-port server. I need to create a Raid array using 4 drives but port 1 and 3 ...
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1answer
128 views

Mix HDD and SSD in same RAID 1 array

I have a Dell Poweredge R410 with Perc H200 controller. I would like to upgrade my 15k RPM arrays with SSD. Both disks are SAS 6Gbps. Will it work if I remove 1 of the 2 disks, replace by the SSD, ...
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0answers
81 views

Btrfs multiple devices with dm-cache

Unlike md-raid, when you create a btrfs file system with multiple devices, there is no special block device exposed (ex. /dev/md0). With the lack of built in cache support (ex. L2ARC), can one set up ...
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1answer
33 views

Should I expect both disks in my RAID1 array to fail at about the same time?

I have an Ubuntu server with two HDD drives in a software RAID1 array. These are identical drives, and I'm assuming they're seeing the same level of read/write activity over their lifetimes (correct ...
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1answer
59 views

One disk accessed more than others during md RAID6 rebuild

I am rebuilding one drive of an 8-drive RAID6 (using 'md' Linux software RAID), and have noticed that it doesn't seem to be going as fast as it could, presumably because one of the drives is being ...
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2answers
39 views

One disk member of two Disk arrays

I will start with my question and then make a short example: Is it a good idea to split a disk into multiple partitions and create different disk Arrays (raid1/raid5) with those paritions? Are there ...
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1answer
56 views

How can I check if my server have RAID-1?

With lsblk command I get: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 232.9G 0 disk ├─sda1 8:1 0 32G 0 part │ └─md0 9:0 0 32G 0 raid1 [SWAP] ├─sda2 8:2 ...
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1answer
82 views

How do I reconfigure my disk array on a Dell machine under Linux?

I have a Dell R620 with a PERC RAID controller (lspci shows "RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05)"). I had placed a single disk in it, made it a ...
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1answer
120 views

HP Array P410, HDD changed, but still predict to fail soon

On HP Proliant DL G6, one disk in RAID 1 on P410 array broken. It was HP EG0300FBDBR. I changed it on compatible HP model - HP EG0300FAWHV. (both 300 Gb, 10K) But HP Array Configuration Utility still ...
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0answers
24 views

How to backup mdadm RAID superblock info?

I'm Looking for a simple command that will backup the mdadm superblocks on a RAID volume. A quick way to scan you system would be: mdadm --examine /dev/sd[a-z]* > raid-volumes.txt Now after ...
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2answers
60 views

Is it possible to ask ReFS to use hardware RAID6 for parity calculations?

Does ReFS use FPGA-based XOR engines for RAID parity calculations? If not, is it possible to get it to use such tech?
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3answers
73 views

LVM and RAID setup

I am relatively new to LVM and RAID. I have a Server (HP ProLiant) with a Hardware Raid (RocketRaid 2710). Given two HHDs (500 GB) I wanted to setup RAID 1 (Mirroring). When installing Ubuntu I made ...
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0answers
75 views

Can't stop and reformat /dev/md0

I want to reformat /dev/md0, which is a RAID0 array consisting of 4 disks (sd[bcde]). However, when I tried to run the command mke2fs, I received the following error message: /dev/md0 is apparently ...
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120 views

Got kernel panic with 3w-sas driver after kernel update

I use CentOS 6.7 and I've got kernel panic related to LSI 3ware 9750-4i Controller after kernel update from 2.6.32-431.17.1.el6.x86_64 to 2.6.32-573.12.1.el6.x86_64. It is minor update, so I think it ...
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1answer
102 views

What speed should I expect from an MSA60 attached to an HP p212

I have an HP DL380 G5 with a P212 controller and a 256MB cache card/battery. The P212 is hooked up to an MSA60 enclosure, which for testing, I have populated with 8x 500GB 7.2k SATA disks. I know ...