RAID

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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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i have an intel s1200btl mother board trying to install raid drivers.. no drivers to seem to work even from intel site any suggestions
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I've got 2 T430s, with an Intel Xeon E5-2630 v4 2.2GHz (10 core), 64 GB RAM, a mirrored 300 GB SAS drive for os & 6 2TB SATA in a RAID 10.
Looking to set up Exchange 2016, network version of Quickbooks enterprise, Trend Micro worry free business security, a remote access server, file & print server, as well as the MS stuff, DC (or 2?) DNS, DHCP, etc.
In complying with licensing, I gather the only role I can have on the host is Hyper-V, which is on my 300GB, would any other VM 'parts" go here, as well?
When setting up VMs, does one VM encompass the OS & data, which would normally be on 2 different arrays the 'old way'?
The two directories for VMs would both be on my RAID 10, correct?
Any suggestions on the best way to spread all my pieces between 4 VMs?
If I've got too much stuff here & would be better splitting between questions, lemme know.
Thanks!
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Hi all,

Really need some help please.  Have a small domain network running on 2012 with less than 10 users set up on it that is running painfully slow for all users.  Even saving a 20K file can take a minute.  600MB folder transfer is reporting as needing about 20 hours.

I have just installed this brand new Dell R430 server, 32GB Ram, Dual Xeon Processors, Perc H710 card with 4 x SAS 10K drives in Raid 5 for the main data partition.  Running Server 2012 R2  as a host server and have created a single VM running 2012 Standard which has been set up as a single domain controller/file share with DHCP and DNS server roles. I made sure I updated all of the Dell drivers on the host before installing the VM and have run all updates on both the host and the VM.  There is a brand new 24 port gigabit unmanaged switch into which the server,  a Watchguard T30W Firewall, a Wireless access point, a Synology NAS device and 4 laptops are all plugged in.

I've checked there are no IP conflicts, get a steady ping to the server at <1ms.  DHCP is working fine and there are no issues accessing websites however everything is so slow.

I've disabled VMQ in the advanced properties of the VM Host NIC and also disabled SMB signing so I know the issue isn't with those.

Would really appreciate any pointers.

Thanks

Adam
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Hi

Info on server :
DL 385 G8
Server is running VMware ESXi 6.0
Controller card P420i

We rebuilt 2x600GB SAS drives in a raid 1 to 2x1200GB without any issue.
When trying to expand the disk space on the logical volume it prevents us of doing this or there is no option as it complains there is a 600 GB Hot-spare drive configured to the same array (Array A).
I do not have any option in ACU on removing of Hot-Spare drive, i have the option to erase the drive.
Will an erase of the drive tell it that it is no longer a hot spare drive ?

How can i remove the Hot-Spare drive ? I would like to repurpose it to another Array B as a hot-spare.

Update, i tried to do this from ESX console using hpacucli using command ./hpacucli ctrl slot=0 array A remove spares=2I:2:8
but got Assignable spares not available (see attached screenshot).

Hot-spare-issue.png
Show command on Array A

hot-spare2.png
Regards
Roger
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Hi we currently have had a failed harddrive in our server i have replaced the drive i no seem to be gettin a warning as posted below thanks chris
Untitled.png
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I have a box that I configured to use MD RAID during the install process for the OS and boot drive. It's this weird /dev/md0p# structure that confuses me.

The installer produced /dev/md0p1 (/boot), /dev/md0p2 (/var/lib/mysql), /dev/md0p3 (/), /dev/md0p4 (extended), /dev/md0p5 (swap). I noticed it did this for all physically installed machines from the CentOS 6 DVD.

How do I increase the size of the /dev/md0p3? I need this root partition to be expanded. I feel like I need to delete the /dev/md0p3, /dev/md0p4, /dev/md0p5 partitions and then create a new one for /dev/md0p3 with the extra space. I don't care for p4 and p5, because they don't contain actual data. I can create them after the fact.

I am confused on the order of deleting partitions and adding the space in respect to /dev/md0. fdisk -l shows the drives /dev/sda, /dev/sdb and then finally /dev/md0 with all of the sub partitions.
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Hello,

I have a PowerEdge 730 with H730 RAID controller. I created a RAID 5 array with 2 x hot spares. The total available disk space is about 4.4TB.

I created a single VD using all the available space.

I installed Windows Hyper-V Server 2016 core. During the install I did not manually create partitions since I intended on having only a single partition of all the available space to allocate to VMs so I just selected the raw disk space, which displayed as 4.4TB. This was the first mistake since now the entire partition is MBR. That being said, it only sees 2TB max.

Now I need to shrink the OS partition to about 500GB so I can create 2nd GPT partition so I can make use of the remaining space.

My second mistake is what complicates the situation a little more. I installed and deployed 3 production VMs assuming I had all the disk space to work with.

I have made a backup of the VMS using Veeam backup and replciation and I moved the production VMs to external storage for the time being so I can adjust the C:\ partition.

Now, my question is... Can I use diskpart to shrink the C:\ partition and then create a second partition with the remaining space on a single VD or do I have to shrink the VD in the RAID utility and create another VD.

Is what I'm trying to accomplish possible without destroying the OS?

I know there is always a risk, which is why I have backups, but I would like to do it with the least amount of down time. I've already had the VMs off…
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I have IBM server 3650 with 4 hard disk install slot no 1,2,3 is have HDD 750GB and they are in raid 5 and the same array.
in addition. the slot number 4 have hard disk 300 GB this hard disk was faulty I have removed and inserted into the running server and it went to an orange solid light and flashing green light. I assumed at that time it was rebuilding the drive. it is still it rebuilding the drive.

Moreover, I found one partition disappear

Does anybody know why the light is flashing green light? on the drive?  Any suggestions for?
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I 'm stuck in this problem and have no Ideas.
Can somebody help me, please?
Thank you
Uli
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i have ibm x3200 m3 server with hardware raid 5 configure (4 hdd) with simple swap . so how to know all 4 hdd status. & what to do if os is crash
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Hello,

       I bought the server about 4/5 years ago, it came with "windows small business server 2011".
This is the chassis
http://www.supermicro.com/manuals/chassis/tower/SC748.pdf

       I replaced all the old hard drives recently and decided to start from scratch with new windows setup. I chose RAID 6 expecting to get about 8GB of usable space(ie from 4 * 4GB disks with 2 disk redundancy) . However I wasnt familiar with the difference between MBR and GPT when partitioning.  I guess I chose MBR if I was prompted, because now that is the partitioning system and Im limited to 2GB per Volume. I created 1 Volume (C drive).

Is there anyway to convert this current bootable volume to GPT or perhaps there is a way to allocate the remaining space to some other drives?

btw, the BIOS version is "American Megatrends Inc. 3.0b, 01/02/2013" but I seem to be having trouble logging into the BIOS now at startup, Ive tried all the usual key combos.  

Any help or suggestions much appreciated

Thanks
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Hi,

I bought HP DL380-G4 server from eBay and it seems to work but I'm having problems installing Win 2003 OS- I've 6-hd @ 146 GB/ - I created the RAID containers- 2-RAID-1 and 3-RAID-5.  I tried to separate 6th had as a spare but I unsuccessful or couldn't figure out how to-?
This is my home network- lab I want to practice with it before joining the server team in a month or so.  
I tried to run SmartStart 8.70B for x64 and booted to the CD but it ran for a good 5-7 minutes loading but then I was left with a HP screen and no activity. So I decided the power down the server.
Windows is not able to see the hard drives? What am I missing here?
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I have a problem to resize my hardisk from the Raid bios. There is no option to resize. So I move to command line.

The actual size of the disk is 1TB but Virtual disk only show 571GB.
root@main [~]# MegaCli -LDInfo -Lall -aALL


Adapter 0 -- Virtual Drive Information:
Virtual Disk: 0 (target id: 0)
Name:
RAID Level: Primary-1, Secondary-0, RAID Level Qualifier-0
Size:571250MB
State: Degraded
Stripe Size: 64kB
Number Of Drives:2
Span Depth:1
Default Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU
Access Policy: Read/Write
Disk Cache Policy: Disk's Default
Virtual Disk: 1 (target id: 2)

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The disk that should be raid as below;
root@main [~]# MegaCli -PDList  -aALL

Adapter #0

Enclosure Device ID: 252
Slot Number: 4
Device Id: 22
Sequence Number: 1
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
Raw Size: 953869MB [0x74706db0 Sectors]
Non Coerced Size: 953357MB [0x74606db0 Sectors]
Coerced Size: 952720MB [0x744c8000 Sectors]
Firmware state: Unconfigured(good)
SAS Address(0): 0x73a13c2fa27fc39f
Connected Port Number: 4(path0)
Inquiry Data: ATA     WDC WD1003FBYZ-01V03     WD-WCAW3K9A34RC

Enclosure Device ID: 252
Slot Number: 5
Device Id: 21
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
Raw Size: 953869MB [0x74706db0 Sectors]
Non Coerced Size: 953357MB [0x74606db0 Sectors]
Coerced Size: 952720MB [0x744c8000 Sectors]
Firmware state: Online
SAS Address(0): 0x738d3620a180a892
Connected Port Number: 5(path0)
Inquiry Data: ATA     WDC WD1003FBYZ-01V03     WD-WCAW37322576

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I have add another disk and using below command to resize.

root@main [~]# MegaCli -LDRecon -Start -r1 -Add -PhysDrv[252:4] -l0 -a0

Failed to Start Reconstruction of Virtual Drive.

Open in new window


I read from this link : https://serverfault.com/questions/729711/lsi-replace-disk-in-raid1-with-larger-drives-how-to-expand-raid-to-use-free-spa 
I could expand to use Free disk space but unfortunately not working as expedted.

root@main [~]# MegaCli -LdExpansion -p100 -Lall -aAll
Invalid input at or near token -LdExpansion

Open in new window


Appreciates that anyone could help.

Thanks.
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Hello guys,

I´ve been looking for this solution quite long time...and still dont have proper answer...so...what is the best practice for setting up RAID10 storage for VMware VMs?
Do i need to setup same strip size for all layers? - vmware, vm´s, os?
Whats the best practice for large files stored on virtual disks?

Thank you!!

Regards

Jiri
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I have this server with 1 tb x 4. Inside I have 4 cables in one
I also have another 1 tb

How to raid all five in one?

In F2, three is option to select raid with 4 drives by a click
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Hi,

I ejected each of the two disks in my Readynas NV+ v2 NAS in order to remove dust in the bay. Following this my NAS no longer mount the drives.

When I insert one of the drives it says "new disk added" in the lcd display. Is there any way to recover the content of the disks?

Web interface also stopped working and only shows "permisson denied" message when I try to access the site without presenting a login screen.
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I have a customer with a Dell PowerEdge T320, the main drives are running RAID 0 and then they have (3) 1TB drives running RAID 5.  Last week, drive 4 came up with a PDR1101 error but everything seemed to work.  When I had this before, I just swapped the drive with a new one and RAID took over and wrote everything to the new drive.  This time, I swapped it and everything was working fine - I could access all the mapped drives so left the site.  Today they tried to get into their programs and there is only one mapped drive showing and it says that new drives must be initialized.  I tried to put in the old hard drive but get the same message - thoughts?  The system is running SBS 2011
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I have a hp ML350 g9 server which is configured with RAiD 5.  It has 4 SSD hard disks.  recently we had a power outage and our master boot record is damaged, and I can only get to "the drive where windows is installed is locked.  Unlock the drive and try again.  I cant fix this, so wanted to restore the whole windows backup I have.  

When I launch from the CD, I go into the option to restore, but when I select the target destination, there is no drive showing.  I went into the HP untility and can see the array there, but not when I launch from CD and try to run the backup.  

i did a fresh install just to another single disk, and still when I launch off the CD, i cant see the disk when I try and run the recovery.  I think im having the same issue where the drive cant be seen because I don't have the drivers for the smart controller.  I tried those links you provided, but they are just executables.
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I have a hp ML350 g9 server which is configured with RAiD 5.  It has 4 SSD hard disks.  recently we had a power outage and our master boot record is damaged, and I can only get to "the drive where windows is installed is locked.  Unlock the drive and try again.  I cant fix this, so wanted to restore the whole windows backup I have.  

When I launch from the CD, I go into the option to restore, but when I select the target destination, there is no drive showing.  I went into the HP untility and can see the array there, but not when I launch from CD and try to run the backup.  

i did a fresh install just to another single disk, and still when I launch off the CD, i cant see the disk when I try and run the recovery.  I think im having the same issue where the drive cant be seen because I don't have the drivers for the smart controller
0
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Hi,

I have a HPE ProLiant DL360 G7 Server which has stopped responding so its been powered off/on and its not picking up the boot drive. The server has 4 drives in raid 5 and all of the drives are showing online and good health (no amber or red leds). How do I fix the raid array so it detects the boot partition etc? Its currently booting up and then just trying to boot from CD Rom or Network. I cannot get as far as windows. the server is out of warranty so I need to work out how to resurrect it without loss of data etc.

Is there some raid utlities which can be accessed?

Thanks
SycamoreIT
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Have a Dell PE T310 with a Perc 6/i Raid Controller configured as a (3) Disk Raid (5).  Raid has been configured and disks are recognized.  The disk presently has two partitions.    The system has no OS,  I am attempting to load Windows 2008 R2 from original install DVD's.  The install process reaches the point where it realizes there are no Perc 6/i drivers, the install halts and prompts to load drivers.  I am having a problem finding the correct drivers and/or method to load the drivers during the install.  I have located, on the Dell website, under the Service Tag of the T310 Server, several versions of what it refers to as firmware updates to the 6/i controller.  I have navigated deeper into the Dell download pages and found file or files that are referred to as 6/i Adapter drivers, which is what I think I need.

I have down loaded, extracted the adapter drivers to a flash drive and then inserted the flash drive in the server at the appropriate time (when being prompted for drivers), browsed to the flash drive and executed an install only to have the system search the media for the compatible drivers and reports that it finds no compatible drivers.  I have tried this same approach using the firmware updates with the same results.  

Can I assume I am not finding the correct drivers or,  is my method of loading them during the install incorrect?    I should also point out that the server is out of Dell warranty so they are not anxious to assist, but I did in a chat, …
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I am setting up a server and installing Server 2012 R2. I am not very familiar with Server 2012 and server pools. I am trying to do a software raid 1 however with Server pools i am encountering the following issue. I have two 3 TB Sata HDs. They are both connected. The first drive has the OS and the second drive is unallocated. Both are set to MBR. When i try to create a storage pool it allocates all 4 TB from the two HDs as one which is cool. However when i try to do a Virtual disk it does not find any more that 92 Gbs . My two questions are what may i being doing wrong and the second is since both disks are in the storage pools is there already fault tolerance so that if one drive fails the other will still carry the OS until the other one is replaced?
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I am running low on space on a Server with 8 72GB Hard Drives in a Raid 6 Array

I would like to purchase 8 250GB Hard Drives and expand the space.

What is the best procedure for doing this.

I assume I will add 1 Hard Drive at a time - let it build and then add another - I guess that will take several days as each drive is added (or am I wrong)

My goal is to add the 8 new hard drives and then Expand the array for the added Hard Drive space.

We have the Primary Server and 3 Virtual Servers all using Hyper-V

Thank you for any suggestions

Can anyone help me with the best way to do this?
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I have a HP8300 CMT that I want to add RAID 0 to.  It has a 500GB drive I have ordered a matching drive.  Do I have to enable RAID in Setup (BIOS SATA Emulation) before using Intel Rapid Storage Manager from Windows?  Can I avoid doing a full OS Install and just have the new disk come online as a mirrored copy?

I have read the manuals available online and it isn't clear.  I'm using Windows 7 Pro - 64
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We have a ProLiant ML350 G6 with an integrated p410i Smart Array storage controller.
We were looking to add a disk to the 8th drive bay to expand the array, but the 8th bay appears inoperative.
Drives inserted into bay 8 don't even spin up and show now activity lights.
We suspected this might point to an electrical issue, so we tried replacing the backplane, but no change.
Instead, the controller is detecting the internal tape drive as being connected to bay 8.

The tape drive is connected via a break-out connector on the miniSAS cable for bays 5-8 between the drive backplane and the controller ports on the motherboard.
We've tried just disconnecting the tape drive, but the controller still shows the tape drive (disconnected) as being on bay 8 and never see's the SAS drive.
We also tried switching to a miniSAS cable that doesn't have the break-out connector for the tape drive, but the controller reports that none of the drives in those bays is detected when we do so.
We tried this with a second miniSAS cable in case the first was defective, but had the same result.

We've confirmed the controller is on the newest firmware, and it does have a battery unit connected.
It also lists having a "Flex License" on the controller.

Is there some special step required to disable the tape drive and make the controller see the SAS drive in bay 8 instead?
0

RAID

2K

Solutions

1

Articles & Videos

3K

Contributors

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.