RAID

RAID stands for Redundant Array of Independent Disks.

RAID is data storage technology that allows multiple drives to be used together as a single virtual drive for reasons such as fault tolerance, reliability and performance.

There are several different levels of RAID that determine how the data is stored and the level of redundancy achieved across the drives.

Share tech news, updates, or what's on your mind.

Sign up to Post

Hi there,

We had a power cut and the server come back online and running. Completely fine, however the controller is showing a warning that it is queued for a rebuild however the disks are showing as ok and no failed drives, just the logical disk is ready for rebuild, I rebooted it again and it’s still showing the same, even the diagnostic reports are showing the logical disk as ok and the disks too, nothing obvious is standing out, really odd, it’s not running slower either.

Just can’t get my head around it, any advise would be greatly appreciated

Many Thanks,

Jason
0
10 Tips to Protect Your Business from Ransomware
10 Tips to Protect Your Business from Ransomware

Did you know that ransomware is the most widespread, destructive malware in the world today? It accounts for 39% of all security breaches, with ransomware gangsters projected to make $11.5B in profits from online extortion by 2019.

Server 2012 stuck in boot loop. Server gets all the way to ctl-alt-dlt and then promptly reboots. Can boot into safe mode, and safe mode with networking. Server eventually boots and stays on. Inherited this system from someone else. System has a Raid 1 and both driver do the same thing.

Cleared windows update file, reset network connections, removed antivirus, removed logmein (sometimes logmein causes this.)
0
We have a DELL PE R630 server with PERC H730P RAID controller. It has a RAID 1 VD containing Server 2012 R2 Standard. It has 2 more RAID 5 Virtual Drives containing data. Can an additional Virtual Drive be added with a group of new physical hard drives?
0
Hello,
    I have a 3 Drive RAID 5 on a Server and so far every Backup Software that we have tried has failed. We have run a program called HDTune Hard Disk Utility and the results showed 1 bad Block. Is their any way (software) to repair this or mark this block so that the backup software can bypass this?


HD_TUNE _RESULTS
0
I have a Windows 8 PC, where the D Drive is a RAID 1 array, using the onboard RAID.  About a week ago, I updated the BIOS, which inadvertently switched my ATA mode from RAID to AHCI (hence breaking RAID).  I didn't notice right away since Windows did not assigned a drive letter to the other disk.  I attributed the boot up failures to the UEFI update, and Windows was able to self correct the problem.

Once I found the problem, I went into the UEFI, changed ATA back to RAID.  The Intel management software showed that the disks were syncing, but it apparently caused corruption in the NTFS partition.  I have lost about a week's worth of data in my Access file, and my backup software (iDrive), has not been backing up my data as I thought it was.  My last successful backup of my Access database was about 2 weeks ago.

Is there anyway of recovering my Access database?  I tried using recuva, but it was run against the RAID array, which showed no recently deleted files.  I might send the hard drives to one of those hard drive recovery companies, but am hoping that there is a cheaper solution available.

Any ideas what I can do to resolve this issue?
0
The Adaptec Raid Controller Stripes failed for some reason, the controller details are given below. It is a live server, please give any suggestions to fix the problem without data loss. Restoring data on new disk/server is highly complicated.

Controller Model                  : Adaptec 5405


Logical device number 0
   Logical device name                      : DATA
   RAID level                               : 5
   Status of logical device                 : Optimal
   Size                                     : 571382 MB
   Stripe-unit size                         : 256 KB
   Read-cache mode                          : Enabled
   MaxIQ preferred cache setting            : Disabled
   MaxIQ cache setting                      : Disabled
   Write-cache mode                         : Enabled (write-back)
   Write-cache setting                      : Enabled (write-back)
   Partitioned                              : Yes
   Protected by Hot-Spare                   : No
   Bootable                                 : Yes
   Failed stripes                           : Yes
   Power settings                           : Disabled
0
I guys,
I got a windows 10 computer. Got 2 hard disks, running with raid 1

Not sure what happened, but today after weekend, windows not booting and the HDD light is red
- checked raid configuration it shows- raid 1 status rebuilding

Should I just leave it rebuilding in the rapid storage technology page, till the status comes as Normal ?? Because if I exit out of that page, it keeps trying to boot into windows and saying could not find harddisk

And how do I find which hardidisk is faulty in 2 harddisk ?
I tried removing one hdd- raid status showed as degraded
Tried removing second harddisk with first harddisk inside - came as failed

Does it mean the first harddisk is failed ?? Or any other way to find which harddisk failed or is it just raid problem ??
0
I have a server 2008 r2 that has a software raid 5 with 4 drives.  I have one drive failing and need to replace it.  Its not in a failed state yet but senses it is failing.  I have seen several horror stories on the process and and want to ensure I get it right the first time.  What is the correct process to do this?  I do not have a extra drive bay so I will have to pull and swap.  Do I need to do this with the server off or do a hot swap?

Again, I don't want to get in to the situation where it is not recoverable and need to know the correct steps to take.

Thanks in advance.

Cecil
0
After I lost a RAID5 of three disks, I added a new RAID1 of two disk to reinstall vSphere ESXi 6.5 U2 (previous was VMware-ESXi-6.5.0-4564106-Fujitsu-v400-1)
I had another RAID1 with a VMFS datastore and also a RAID0 (Don't be rude with me...)
During installation of vSphere ESXi 6.5 it didn't recognized the VMFS datastore unlike the RAID0.
I don't think I broken the  RAID1. I read this : https://kb.vmware.com/s/article/2148265
But I don't think it apply because I installed back the previous 6.5 version (4564106-Fujitsu) and a 6.0 version too.
The RAID adapter is a LSI MR9240-4i
I used some tools to check one of the disk of the RAID1 and theses tools can locate the VMFS datastore and the files I'm looking for (a vmdk) but theses tools are not free when it's time to recover...
- https://www.diskinternals.com/vmfs-recovery/
- http://www.vmxdb.com/soft/81.html

I also tried to use the Open Source VMFS Driver but it can't see the VMFS partition when I run : java -jar fvmfs.jar  \\.\PhysicalDrive1 info

I have a backup but I would like to get some files only present on the current RAID1.

I did not yet tried to install linux (instead ESXi) on the server with vfms-tools to check if I see the VMFS partition...
Is there a quick way, free tools, that let me read this partition en extract the VMDK I'm looking for?

Thank you for any help.
0
I recently got an older server. 6gb RAM, 1x2tb RAID array. 4 core CPU. Literally an old file server.

I upgraded their server and took this one.

It originally came with Server 2008, but I was unable to recover the key (they wiped the drives and it didn't have a sticker on it.

I was wondering of a linux OS with a web-based GUI. I have used Webmin in the past, and I like it, but it doesn't seem to be updated very often.

I want to know if there are any similar to you Webmin that you like to use. I don't really want to hang out in my office staring at a screen and I ain't great with terminal commands (through SSH). I like the module options like in Webmin. I have also tried Cockpit project, but it doesn't have much on it. And ClearOS is not that easy to use when setting up samba share. Amahi, I have the same issues.

What are your recommendations??
0
Get Cisco Certified in IT Security
Get Cisco Certified in IT Security

There’s a high demand for IT security experts and network administrators who can safeguard the data that individuals, corporations, and governments rely on every day. Pursue your B.S. in Network Operations and Security and gain the credentials you need for this high-growth field.

Have a pc running with one hard disk. What is the good solution to prevent data loss? NAS / additional hard disk to running raid? any other good solution?
0
Hi there,
I have a big problem with a server of a client. After the holidays, the server was down. On starting up it complains about a disk error. It is a Proliant ML110 G6 and it has 4 drives configure3d in raid 10. It complaints about 2 bad disks which have been found again.. I replaced one with a new disk, but it says it needs 2 new disks to start rebuilding. So I also replaced the other one (Disk 2 and 4 were bad). The raid controller is a B110 btw. Now it says it is recovering, but on startup it says " A disk error occurred, Press ctrl-alt-del to restart". If I go into the raid bios, it still says "recovering". However I can't see anything and can't hear the drives either. How do I know if it really is recovering, how far it is and what it is recovering?

Thanks,
Roger
1
Trying to Install SBS2011 on a Dell Poweredge T160. Have created Raid 10 boots from CD but freezes at WPEINIT Cmd Prompt.
0
Hi again guys thanks for all your input previously.  I'll start again.  Starting with 3 sata I found Sata drive 00 was beyond repair, so I had no OS, raid 5. Repostioning the two remaining satas drives to 00 and 01 i installed esxi 5.5 which is stable, raid 0. Reclaiming 3 other sata drives (now a total o 5 drives) i'd now like to use all drives in a new esxi setup (probably losing the first esxi install), can you advise how to bring the extra 3 drives Online?
i'd like to use raid 5 so if a drive collapses again i don't lose all data in my new esxi build, the drives are all various sizes, 00-150Gb 01-150Gb 03-250Gb 04-80Gb 05-1Tb is this a viable setup?
thanks again all. steve.
0
Hi,

Usign ILORest API I want to change one parameter "ReadCachePercent", my command is getting successful and commiting the changes but when I check this parameter value in Intelligent provisioning  > RAID Configuration >  SMART Array Controller > Tool > Cache Manager,

I see no changes there.  Commands used

# ilorest rawpatch storage.json --biospassword=XXXXXXXX
iLOrest : RESTful Interface Tool version 2.3
Copyright (c) 2014, 2018 Hewlett Packard Enterprise Development LP
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
The operation completed successfully.
# ilorest commit
iLOrest : RESTful Interface Tool version 2.3
Copyright (c) 2014, 2018 Hewlett Packard Enterprise Development LP
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
Committing changes...
No type currently selected. Please use the 'types' command to
get a list of types, or input your type by using the '--selector' flag.
# ilorest rawget "/redfish/v1/systems/1/smartstorageconfig/settings/"
iLOrest : RESTful Interface Tool version 2.3
Copyright (c) 2014, 2018 Hewlett Packard Enterprise Development LP
0
I have an older server Dell Power Vault NF 500.  It was running Windows 2003 storage server.  A week back the drive holding the OS failed.  There are two drives on one controller (C: drive)  and 3 drives on another controller.  The data is held on an array (Raid5) with three drives.  I simply want to get the data off the array (Raid 5) drive and onto a backup disk. I am guessing the two drives holding the OS were a RAID 0. How do I go about getting the server back up and not risk the drive with the data?  I can stick another drive in there and install an OS on the drive but will it see the data drive after?   Will the install leave the RAID 5 alone?

I have never had to do this in the past and I cannot afford to make a mistake.  I would love to get some advice and queue up a conversation with someone who has experienced this before.

Reggie
0
vcenter server 2008 throwing event ID 1, onload():cannt find any HBA or networking controller also no raid controllers found. wondering if anybody has encountered this before.
0
Hi Folks,

I'm a Server Admin albeit for a small company with a Single Gen 9 HP Prolinient Server that is Virtualized.

The storage is RAID 10 (8 x 1.2TB Drives).

Am running low on space so need to increase.. want to add another (4 x 1.2TB Drives) giving me an extra approx 4TB of space.

Looks like this is all I need to do? Start an Expand and once started I can boot up server? Do it on a Friday night probably let it go over the weekend.
https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c03510253
0
I have a client with a windows 2012 server r2 with data drive that fragmented with 1.8 terabytes of data. It's taking forever to defrag, i mean days. This is very nice server with raid 5 (LSI card with 6gbs support and all shows optimal in the web gui) Two 8 core Zeon CPU's, 64 gigs of ram. it has has 6 1 terabyte seagate serial attached scsi drives in it. it has been running fine for a long time. Now it's not. when I noticed the drive was fragmented at 82 percent. Has anyone got any ideas to share?
0
Problems using Powershell and Active Directory?
LVL 8
Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Hello, I'm looking for a good local backup solution. I'm considering either direct attached storage or a NAS device. I'm looking for something that has the ability to utilize NTFS permissions using my existing AD user/security accounts so that various users within our domain would not be able to access this data without being given specific access. Can anyone recommend something preferably in the "under $500" range with around 4TB of usable space? I'm not real concerned with RAID configurations as this would just be a local redundant backup (already backing up to Carbonite).
Thank you!
0
Hi Guys, we are a small business we are trying to implement a file server using windows server 2016, we can't afford a h/w raid for now to have a proper NAS. so i'm researching the alternative. so for the data experts out there what file storage NAS can we use in a windows server 2016 AD environment. so far we are comparing unRaid, FreeNas, stablebit drivepool and windows native RAID.
0
We have to serve 50,000,000,000 requests per day, our app can handle that, but we're not sure if our database skills are there to pick this up. We have a database server with 256gb of ram and 512GB SSD RAID using percona edition. Some of the data needs to stay on the database for 30 days, the transaction table where all requests are stored. what approach do we need to scale this horizontally? each endpoint requests runs about 4 queries...
0
Hi, trying to replace a failed disk on a Dell Perc S110.  When I try to hit insert to assign the global hot spare as I have done in the past I get the following message/errro.

Not selectable: Disk is in use by a virtual disk

The two hard drives that are still OK are 500 gig Dell drives, I tried a 1 and a 2 T Toshiba, same error.

Thanks all
0
Hi, we have an HP ML350 G9 server with a raid 5 array, now i am adding 2 new SSD drives and wanted to build a Raid 1 array additional. Does anyone have steps for this so i dont screw it up?

Thanks!
0
Dell PowerVault MD1200 with 8 drives in RAID 5, (2 TB each) (2, 4 drive arrays).
There were 3 arrays but two drives simultaneously crashed so I pulled all 4 out. About 2 weeks later the whole system died. When you unplug it (and reboot the server too) and replug it in, it starts to boot, recognizes all the drives the the fans in both power supplies go FULL blast and REALLY loud.
The virtual drives are recognized by the OS for about 10 or 20 minutes until the system dies again.
Only thing I can find is on the back the EMM light is blinking amber twice at a time but I'm not sure thats it.
I've tried booting up with either one or the other PS plugged in, same result.

Thanks!
0

RAID

RAID stands for Redundant Array of Independent Disks.

RAID is data storage technology that allows multiple drives to be used together as a single virtual drive for reasons such as fault tolerance, reliability and performance.

There are several different levels of RAID that determine how the data is stored and the level of redundancy achieved across the drives.

Top Experts In
RAID
<
Monthly
>