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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We have Dell r730 running Solaris 11 and MD1420 storage array connected through perc h830 raid controller. MegaCli is unable to collect disk information.

The command is /MegaCli -PdList -a0

and the error we get is:
ERROR:Could not detect controller.
Failed to get ControllerId List.
Failed to get CpController object.

Any suggestions? Is there a different software that can be used under Solaris 11. Mainly we are trying to check disk status every few hours through cron job, so that any disk failure can be notified through email in a timely manner.

Similar hardware running Solaris 10 x86 works fine.

/MegaCli -PdList -a0 | grep -i "Firmware state"
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
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We have a PowerEdge R410 with a PERC S300 Raid Controller.  We had an issue with one of the drives not being recognized by the Raid controller, so we decided to rebuild the RAID and reinstall Windows.  The RAID appears to be set up fine in the card, but no OS installation is able to detect it.  We've tried Windows 2012 R2, Windows Server 2016 and Linux, but none can see the virtual drive.  Any suggestions??
hi experts:

intel rst is monitoring  the PC with raid 1.

how to remotely get the report / health information?

powershell / wmic , etc are welcome.

no vnc / rdp to screen dump, please :)

Probably a fairly "classic" issue but I have surprisingly not found definitive info about it online.

What is the best practice managing hardware RAID controllers on ESX Hosts ? Ideally, we would like to be able to "reach out" to the controller from a Windows guest VM but if not possible at the very least have some management capability (expand RAID, check array consistency) from ESXCLI.

How should we go about it ? In our specific and immediate case ESX6.5 with Intel RMS25CB080 controller.
I have HPE ProLiant DL380 Gen8. 8 HDDs with RAID 1+0 configured. Hdd at bay 1 corrupted. Mistakenly unplug HDD at bay5. Then BSOD BAD_SYSTEM_CONFIG_INFO error appear. Please help.
NAS lost a shared folder completely?
Currently have a QNAP TS-451 which has a Shared folder called Storage, this appears to have gone missing off the NAS somehow, can't see it if i log into the NAS but i can see the NAS is using all of the storage.
Going to Resource Monitor i can see the Storage folder taking up  10.82TB but this is the only folder that i can't find?
Nas currently does have a degraded drive and is running in RAID 5 with 4 disk (I understand this needs to be replaced and i can't have another one fail) Would the degraded drive cause an issues with displaying shared folders?
Any help would be great
RAID StatusHi,
I have DELL PowerEdge T320 Server with three 600GB SAS HDs. First two HDs are in RAID 1 and third HD is a hot spare.
Current light status is as follows:
1st hard drive (Physical Disk 0): Foreign (toggling between green and amber)
2nd hard drive (Physical Disk 1): Failed (blinking amber)
3rd hard drive (Physical Disk 2): Online (blinking & solid green)

I understand that 2nd hard drive is shot and needs be replaced.
But what does "Foreign" mean in 1st hard drive?
Is it fair to say that only 3rd hard drive is keep the system going at this point or 1st hard drive and 3rd hard drive is being mirrored?
Can anyone suggest an exact model of raid controller card (along with web purchasing link) that I do not have to reflash and is ready to use with my HP z800 workstation/server:

It needs to:

be compatible with vmware ESXi 6.7?
support at least 4 sata/sas drives with 6.0Gb/s transfer speeds
meet my budget of 200$ or lower

I am looking to use sata drives with the controller card to configure 2 or 3 - 2 TB drives in a raid configuration - considering this drive potentially:

However i am not sure on which raid level to choose - i know it will have to be raid 1 or 5 but am not sure which one to choose. I would like the option to potentially start with 2 or 3 - 2 TB drives in some raid configuration but then add more disks as i could afford them. What raid level number would be best to achieve this functionality? Or is adding drives after the raid is built not even an option with raid?

Thank you for all your time and effort to answer my questions. I really appreciate it!

We have a client who is using NAS QNAP TVS-882 with 5 drives(6TB NAS DISK EACH) configured in RAID 5.

She uses this to edit videos from her PC. The main problem here is when she edits the video, video lags and becomes slower than editing a file from a local PC directly.

She only uses one SSD as cache pool.

What would be the best solution to improve the read/write performance?

Would it be possible to add two SSD into RAID 1 and keep the RAID 5 with existing HDD? Then create a logical drive for only current editing files in the SSD. Keep the nonediting files in the RAID 5?
Hello, I am trying to extend my C:\ drive on a server that is running RAID1 on a dell FC630.  It’s a hardware raid that is a Dell PowerEdge RAID Controller H730 and would like to just replace one drive at a time and once the RAID rebuilds go into the controller and extend the disk.  Can anyone tell me if there is an issue with this? This server is a SQL server that is clustered with two nodes and running Windows 2012 R2.
Thanks for any and all advice.
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I have a client that has a Dell PowerEdge T420 with Perc S110 Raid controller. This server has Lifecycle Controller 2 on it. The os is Windows 2008 R2. There was a power outage and when it came back up it went into recovery mode. It won’t repair when I do the repair. I can go to the command prompt and it shows x:\windows\system32 If I try to go to c: or any other drive letter it does not exist. If I do diskpart and do list disk it shows no disks list or the same on list vol. But I can click F8 on boot up and get the normal boot menus, I have tried safe mode, command prompt only, boot log, and last good boot nothing works. It looks like it’s going to boot even has black screen with mouse that you can move around then it reboots. When I go into the raid controller it shows all disks online. I have also tried to but from Windows 2008 r2 and windows 2019 server from usb and it does not see any disks. Does any body have any Ideas?
I am in the process of setting up HP Proliant Ml110 G7 Server. I am a novice at this and would appreciate some help. I just had a rAID 0 setup and lost three of my hard drives. I am using my server for streaming movies. I wil be using Esxi VMware-VMvisor-Installer-6.7.0.update02-13006603.x86_64 and Windows Server 2008R2.   I have 4TB HDD and four bays in my server. I was told to use a RAID 6 but my HP only has RAID 50, 5, 1+0, and 0. I would like to install ESXi on to a USB drive and have the server use this to boot off. Is this possible. If someone has instructions on how to setup from beginning to end that would be appreciated. I am even willing to setup live.
Looking to replace a failing hp mediasmart server.
Customer is a small business, 3 person shop.  I prefer hp equipment, but
would consider dell.  Not looking at fancy dancy flash storage.  Looking
for something that can use sata drives, least 4 so can setup at least raid 5.
They are running a mix of windows 10 pro and home for clients.  Not looking
for Linux.  I Don't want to run active directory, for 3 users not needed.
Suspect that since raid is setup in bios, I would be able to run windows 10 pro
on this system.  Setup raid 5 in bios, setup user shares, repoint storage
location from my computer to the these shares.  The preferred box should
be a tower.  I would also need to be able to use a external usb drive to back
changed data from the server shares to it.
I suppose a decent amd workstation with least 8gb ram would probably work
for this as  well.
Receiving the following error when I tried to restart my VM:
Cannot open the disk '/vmfs/volumes/55fb6cc5-06834bbb-558f-009c02a8359a/AJSWAN001/AJSWAN001_5.vmdk.
After doing more troubleshooting it looks like one of my RAIDs failed. See attachment.

Hoping someone can help us here. We are going through the process of developing a new OS and part of the backup process we used to use when doing this was to pull the the 2nd drive in each array (Raid 1) and keep that safe. If for whatever reason we need to revert changes we can simply boot those disks and mirror them. Now that process worked nicely with the G8 servers - when we plugged the older disks in we would get an advisory message that certain slots where missing and we could continue in interim recovery mode - this worked every-time without fail for many years in many different servers.

Now we have a new Gen 10 380 LFF server with the P408i array controller and that process nhas stopped working (it did when we tested it at the start of the project) - the server gives us the same advisory message and when we accept (F2) to continue in interim recovery mode (see below) the system does not boot, it tries to PXE boot instead (indicating its not seeing an OS). When we look at the arrays controller everything seems normal for the fact it has missing drives. Arrays all there as normal with the expected error messages. It just wont boot from them.

Does anyone have any advice on what me might be doing wrong?

Here is what we have tried:
1.  Deleting the array config with all drives removed from the server
2. Adding one of the disks to another serer and creating a raid 0 array where it sees all of the data perfectly intact
3. While in the array config …
I am having issues with reliability with 2 new servers I recently installed. I am running Server 2016 Standard as Remote Desktop Servers on Dell PowerEdge R640, Dual Xeon 4110 processors, 192GB RAM, 4 - 480GB SSD Mixed Use 12gbps in RAID 10 w/ PERC H730P Controller. BIOS version 1.6.13, PERC firmware, Driver version 6.603.06
I am running ESET File Security  version 4.5

Issue I am running into are random lockups that require a full server reboot. The system runs fine and then every 3-4 days it will just lock up. Very little info in the event logs to look through and troubleshoot with. I was running Webroot but found some cases online where Webroot was causing BSOD. I have not seen the BSOD since going to ESET.

I am curious if anyone else has had issues with this type of configuration.

I am trying to set up an OEM VMware server for in-house use with the following components:

ASUS Prime Z390-A motherboard socket 1151 motherboard
Intel Core i7-8700K CPU
32 GB RAM DDR4 2133 MHz

In addition, I am wanting to use an LSI MegaRAID SAS 9260-4i SATA RAID controller with SFF 8087 mini-SAS interface on the controller, and hook up a pair of SATA drives in RAID-1 configuration for the VMware datastore.  FYI I have 6 VMware servers running in house already with the same controller, but with different motherboards.

When I power the system on, the ASUS motherboard comes up OK and I can get into the mboard BIOS fine.  But the LSI card never shows up anywhere.  Normally the LSI card shows up in the overall boot process with a display of e.g. its BIOS version, firmware version, etc.   It will say something like "HIt Ctrl-H to enter controller BIOS".    But it is as if the card is not even in the system.  I tried 2 different cards and neither shows any sign of being in the system.  The system boots into the ASUS BIOS and stays there.  It does not show the card as a bootable device.  I tried booting with the controller without any drives attached, then with a SATA drive attached to the controller.  Same result each time - the controller is essentially invisible to the rest of the system.

Any thoughts on what to do to get the motherboard to recognize the LSI card?  Or is this mboard too new - or maybe too fast - for the LSI?

Thanks in advance for …
[embed=file 1418213]Hi,

I just received a new server  and tried to install Windows Server 2019, but I get an error.
I have never seen it before.
Can you help?
[embed=doc 1418213]
We have several Dell PowerEdge R515's with PERC 700 controllers. Each has several sets of RAID 1 mirrored disks. I would like to know whether there's a procedure which will allow us idle/offline a mirrored pair, remove both of them from the chassis, and later re-insert them without incurring a rebuild. If so, then is it also possible to use a similar procedure to move the two drives to another server, import the foreign configuration and also to resume operations without a rebuild?
HP Proliant ML350p Generation 8 Server, I can't seem to figure out why it won't boot to a USB stick. In the one time option it says USB Key but when I select that it immediately tries to boot of the raid volume I created. Stumped big time. Anybody run into this ..

The setup is pretty simple, 4 drives 2 raid one configurations. I have looked in BIOS and I don't see any sort of legacy option..

Any help would be appreciated ..
I'm having an issue with a Thecus n12000pro and would like to get an advice on the way to solve it.

My issue is that after some time the 10 HDD 10K raid 5 stop responding till I restarted the NAS.
I believe the error message appearing on the screen was that the nas failed to mount the volume which is strange because it was mounted and working just before ?
The issue has appeared when I configured the the storage to be used for replication and for active internal storage for a Server hosting VMs

The VMWare 6.5 Internal storage is done in ISCSI through a 10GB link on interface connected directly to the server on a 10GB card
The management of the NAS is done on a third interface through a 1GB link on interface

I tried to add 1TB of SSD cache in writeback mode but it didn't help. I thought that it was a IOPS issue but it doesn't seem the case.
The management is still available on the management interface and we can see that when the issue occur the network is unused on the 10GB interface even if it doesn't answer and the server is freezed due to that situation.
The firmware version is I could try to upgrade the firmware to but I'm not sure it would solve the issue.
Should I backup everything elsewhere and rebuild the whole configuration ? Should I buy another NAS ? Is this a simple configuration issue ?
As you see I need advice :-)

Any help or advice on how to solve this is welcome.

Thanks for …

I've a strange problem with our new Dell Poweredge T640 Server. The Server was originally equipped by Dell with two SSD Drives and a Perc 730P RAID Controller. Everything was fine until we decided to add two more NLSAS HDDs from Dell (2 x 4 TB 7,2K 1/min NLSAS 12Gbit/s 512n, 3,5" Hot-Plug). The server fans jumped to 50% and are very nosiy (constantly even while the CPU is idle). We have 8 slots for HDDs. The first two (0 & 1) are used by the SSDs while the next are occupied by the new NLSAS (slot 2 & 3). We also tried to move the new HDDs to slot 4 & 5 or 6 & 7, but this doesn't help.

We made a update of the firmware, everything is up to date and iDRAC doesn't report any problems. The only thing we observe is that the hypervisor ESXi 6.7 U1 (Dell Customized Image) ist giving us a warning in the hardware logs (attached). Could this be an issue, affecting the fan speed? If yes, how can we fix that? Is there a way to update the drivers ESXi is using or how can I get more information about this reported problem?
We have a Supermicro SMC2208RAid

    Basics :
    Controller = 0
    Model = Supermicro SMC2208
    Serial Number = FW-ACC***********
    Current Controller Date/Time = 02/19/2019, 16:36:25
    Current System Date/time = 02/19/2019, 16:36:40
    SAS Address = 500304800e9c8500
    PCI Address = 00:82:00:00
    Mfg Date = 00/00/00
    Rework Date = 00/00/00
    Revision No =

The second Operating System drive failed:<br>
- Enclosure ID:252<br>
- Slot:1<br>
- Model: `INTEL SSDSC2CW240A3`

This drive is on its own backplane, and is handled by the RAID controller as a RAID1 (mirror) of only two drives.

    EID:Slt DID State DG Size Intf Med SED PI SeSz Model Sp
    0:0 3 Onln 1 1.817 TB SATA HDD N N 512B Hitachi HUA723020ALA640 U
    252:0 28 Onln 0 222.585 GB SATA SSD N N 512B INTEL SSDSC2CW240A3 U
    252:1 27 UBad - 222.585 GB SATA SSD N N 512B U

Because that Intel model is no longer available, we replaced it with a:
`Intel SSDSC2KB240G801`. It is the same size and form factor, with very similar specs. All the critical specs are - I believe - the same EXCEPT this new drive is AES256 hardware encrypted. The old drive was AES128 encrypted. My understanding is;…
I have a Dell poweredge R900 with a Perc 6/i integrated raid controller. The controller only supports 2tb drives, and I only found this out after buying 4tb replacement drives. The server is a good server and won't to utilize it for storage. I was told I could purchase something like a PERC H200 to upgrade the controller. However, when I opened it up there was no sata ports and no sata power cables.

Everything runs from the front of the server into a board that feeds everything. Most of the connectors look like oversized IDE cables (not sure what they are called). I just want to make this a storage server.
Hi I have a RAID 6 Adaptec 7805 Controller

I have 4 SATA drives in a RAID-6 configuration running on Windows 10 Pro for Workstations - under NTFS.

I realize that if a drive fails then the other one takes over.

So here is a few questions

1. How does the RAID controller will help me protect me? (I am assuming it does).
2. Would a bad sector only be detected when it is accessed?
3. If a bad sector is detected - can I assume it is reconstructed from the other good sectors on the other disks?
4. I was considering moving the file system to ReFS with integrity streams on - would this give me any extra benefit?

So what I am looking for is a more detailed explination on how this works. Plus any other info that would be usefull.




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.