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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.

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Hi,

I have a couple of 9260-8i raid HBA cards in different servers and would like to extend them beyond the default 8 drives.  The docs talk about an extender/expander hardware option but I've never gotten a clear idea of what it is, much less where to buy one.  

Thanks!

--Ben
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Hi

I have a HP MSA 1040 and I've accidentally added all disk to my raid 5 configuration when i should have had 1 warm spare. Can I remove the disk and add it as a spare
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Hello, our Buffalo NAS (with 4x 2TB HDs) got attacked and the attacker deleted our RAID5 and started the build of a RAID0.  It got about 50% complete and we rebooted it.  Now we get the E14 error that the Array wont mount.

My understanding is that our data is gone but just thought I would double check to see if anyone else knows different.  Is there anyway to recover our data or at least some?  Thankfully this was only backed up data and not live data but could really use some of that data back.

Thanks in advance,
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Hello!
 Have a client that had 2 drives fail on a HP 212 Smart Array which caused a rebuild.  Upon opening the U1 rack HP server (DL120 G6) I see the raid controlled circuit board looks a little brown, like its beginning to burn up.  The system with the replaced drives is operational and the server reinstall is completed.  For the extra $50 for the controller I don't mind replacing it, however, my concern is will replacing the controller wipe out the array config (3x1tb raid 5).  I don't want to go through the install again. The cables will stay in the same spot, and the array controller only has 1 connection which then branches out to the hard drives.
 Anyone know for certain if replacing the raid controller will be a safe and non-destructive swap?
 Thanks in advance.
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Hello guys,

I´m trying to get some information from my LSI raid controller via MegaCLI - running on Windows server 2016...but all commands from help end with errors...
How to use MegaCli on windows properly? Im kinda lost... :(

Jiri
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Hi there,

Can you please let us know how to configure a hot spare for the OS RAID?  We have 5 drives as part of the OS RAID and there is a hot spare, but we don't know how to configure it so that it can be used as a hot spare.  We're using Navisphere and it doesn't mention anything about a hot spare.  All of the drives are 146GB.

Thanks,
- Christian
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Windows 2012 R2 server
RAID 5 array of 3.8tb
Windows disk 0 has C: drive and D: drive and only can use 2tb due to being initialize with MBR.

C: contains WIndows only and programs.  D: is just data.   C: is approx 125gb and good free space.  D: is 1.8tb and out of space.

Since the server was built with single Disk0, can the D: partition itself be converted to GPT?  I can delete and restore no problem.  Or does the entire disk have to be converted?

Or Would a third party tool  like Acronis or EaseUS partitioning tool be best bet to convert.  I need the unavailable 1.8tb of space...

Thanks
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We had 2 identical R620's both using K09CJ PercH310 Controller. Our main server went down with error "R620  A bus fatal error was detected on a component at bus 0 device 2 function 2" which turned out to be the K09CJ controller.  We took this controller out of our secondary server and our main R620 started working again.

However, we purchased a good K09CJ controller and put it in our secondary sever and it wont come up ?? What gives ??
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Dear Experts,

I have Lenovo x3650 M5 with a M5210 raid controller. I currently have two 300GB HDD, hence configure Raid-1.

If later I want to add three more HDDs to the current server and configure Raid-5, which means two HDDs - Raid1 and three HDDs - Raid5.

Is this allowed on the Lenovo server?

We are not doing raid expansion.
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System will not boot. The following error message is displayed on the screen:

"PCIe Training Error : Integrated RAID. System halted!"


A bus fatal error was detected on a component at bus 0 device 2 function 2

How can we fix ?
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Hi All -

We have a Dell R720 with 8 300GB 15k SCSI drives in a RAID 10. Recently one of the drives reported a predicted failure. Purchased a new 300GB 15k drive and pulled the predicted one and replaced with the new. The RAID started the rebuild and completed successfully. From the Dell Open Manage program - you wouldn't know anything was wrong. RAID is healthy and disk shows happy. What we noticed was that after that - performance dropped. (Its an app server with a few IIS apps and runs SQL)

End users were stating they were getting timeout messages and such and I could tell in the OS it felt like it was dragging. I took a look at the history of the SQL backups prior to the drive placement and post placement and it was indeed 5-10 times longer to do simple transaction log backups so something was up.

I popped the new drive out of the chassis (which of course degraded the RAID) and found the speed came right back and its quick again. I've not had any issues replacing bad drives before where the performance changed post rebuild with the same size and speed drives.

I'm guessing upgrading the PERC H310 Controller firmware may help - it does show out of date (and I'm pretty sure it was previously) and if that doesn't give any relief - purchase a second new drive? Sound about right?
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I want to change megaraid_sas code to change some behaviour of my Lsi raid card but till now i am even unable to study the exact behaviour of this code. There is no way to study and change the code.

Please guide me the correct way to go through this code.
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Hi,
I have 6 1TB hard drives that I intend to use in a RAID 5 (So 6TB minus 1TB for parity is 5TB usuable space.
On the 5TB, I am planning to install Windows 2012/2016 server and use the rest of the space to store hyper-V VM servers.
My question is, are there any likely problems with this disk configuration?
If so, what should I do instead to avoid problems?
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Hi Friends,
I have a motherboard with Hardware RAID (Megaraid) in my server,
I installed StorCli for management it in Centos 7 ,
so, when i get disk properties from Storcli, it show wwn for disk,
next, i create disk as JBOD for Show in centos,
when i list my disk as:
ls -l /dev/disk/by-id/

it dont show same WWN in Output StorCli,

can you help me for relation between WWN in output StorCli and in output OS , please?

Thanks for your helps,
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windows server 2012 r2 installing on hp z440 raid 1 cannot see the drives
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Need to replace the raid controller with different type ,I need instructions for how to install without loos data ?
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Hi,
 
 I have DELL Poweredge T420 Server with H710 RAID  and like to update all drivers and firmware - BIOS, Chipset, iDRAC, Lifecycle ... etc. Instead of downloading necessary files on each component individually, is there some type of utility program that I can use to install firmware/drivers all together?

Thanks.
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This is virtual disk in Raid 5, where Disk 7 is hotspare.
When Disk 11 removed (failure disk), Disk 7 is Rebuilding.
Should I wait for Disk 7 rebuild completely, or I can insert new Disk 11 now?
Dell PowerEdge R510 with PERC H800 Adapter
Many thanks!
Capture.PNG
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hello i have ibm server where i by mistakely change raid option in bios to ahci..and now when i restart thge server it does not go to login page and it gives me error boot manager failed...can anybody give me the solution..i have in problem.
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Hello,

running a Dell R 610 with 2 Disk (Raid 1), I had one disk failure (blinking orange).
computer was shut down, disk was replaced.

after the disk was changed:
 -  RAID 1 was set-up (F10 - sytem service) using express wizard,
 -  computer was boot on Windows 2003 server CD for Windows installation.

when Windows set-up is asking to define the partition, I can see the following:

285562 MB Disk 0 at Id 0 on bus 1 on percsas (MBR)
 - unpartitioned space 285562 MB
55 MB Disk on disk (MBR)
- unpartitioned space 55 MB

As I understand this "55 MB disk on disk (MBR)" is the MBR set-up from the newly installed disk which is keeping its previous MBR configuration (from previous computer. Would you know how to get it removed in order to see only the main disk and only one "unpartitioned space"?


Pat
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Hello,

 in RAID 5  I have 4 disks
if any  of  the two disks get fails  then my Data is highly available?
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I have a Dell server with RAID card using 3 600GB SAS drives.  Noticed that one of the drives was blinking orange.  Rebooted to go into RAID manager to check and these are screen shots of the issue.  Server is still booting into Windows 2008 with no issues.  Do not have a lot of experience troubleshooting/repairing RAID so I would like to get some feedback as to what the issue is and how to resolve it.  Thank you in advance for any assistance.

1. What does this mean?
2. How do I fix it?

Boot screenRaid Manager Screen 1Raid Manager Screen 2Raid Manager Screen 3
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Proliant ML350 G5 with Smart Array 200i embedded.
Firstly the cache battery failed and was replaced with no problem.
The Raid is set up as 2 logical drives with 2 drives in each - mirrored. Logical drive 1 is composed of 2 SAS drives with Windows Server 2012 R2 on it. Logical drive 2 has 2 SATA drives mainly with data.
One of the drives failed in Logical drive 2 with a warning in Smart Storage Administrator and an amber light on the drive. 2 SATA drives identical to the remaining one were purchased and one was inserted with the server off. F1 was pressed on re-starting the server in order to rebuild the array and all seemed to go well, however when it finished Smart Storage Administrator reports 'Logical drive 2 is queued for rebuilding' and on rebooting I am asked to press F1 again to rebuild which it tries to do again.
The second purchased SATA drive was thoroughly tested using WD software and a full delete was carried out. This was then inserted to see if the fault was with the first replacement drive but exactly the same has happened. The rebuild seemed to finish at around 87% complete.
I have looked at what is on the first replacement drive and it looks as though it did mirror successfully. There are no errors in the Smart Storage Administrator reports other than the drive queued for rebuild and the lights on the drive seem to be acting normally.
Any advice would be appreciated.
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Hi,

I am getting this error in HP P410I smart array controller. I have replaced a faulty drive out of 6 with raid 5

Error 785 Background parity initialization is currently queued or in progress on Logical Drive 2 (2.3 TB, RAID 5). If background parity initialization is queued, it will start when I/O is performed on the drive. When background parity initialization completes, the performance of the logical drive will improve.

Please help me. attached the diagnostic report.

Thanks

Sreekanth
ADUReport.htm
ADUReport.txt
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I have three virtual servers running on a pretty hefty machine among like 5 other physical machines. each virtual has its own NIC and it plugged into one of our three switches somewhere. We are having some major slowness on two of these virtuals as far as transfer speed across the network. The virtuals are all server 2012 R2 and all are located on a raid 5.
    My first thought is that we dont have enough throughput between our switches which are Managed Cisco Switches. im about to use LAG to connect these together with increased throughput. Im seeing less than 200MBps to the slow ones and well over 300 up to 600 at least for the rest. i have seen 85 MBps on one virtual and unfortunately that was our DC. i will be putting all the servers on the same switch soon which should not limit throughput as much. is there any settings i need to look for in HyperV manager that could impact this.
   Again all my virtuals are on the same physical machine in a Raid 5. each Virtual is connected to its own NIC as well. the Server and the Switches are all less than a year old. Im using LAN Speed Test from Tutusoft for my testing and we test from multiple servers to another server to have multiple speeds to look at
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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.