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, we have a new Dell PowerEdge R540 and I'm looking for opinions on how best to configure the RAID(s). The system has 12 - 8TB SATA drives, PERC controller and has 512GB of RAM. The system will be a Hyper-V Host and will have many (probably a dozen or more) Hyper-V Virtual Machines on it. Some will be database servers like Oracle and SQL and others will be application servers and file servers. The OS will be Windows 2016. The VMs will be mostly 2016/2012 servers with a couple of W10 workstations sprinkled in. Interested in knowing how you would configure those drives. I usually like to use the hot spare option especially if the RAID only allows one drive failure. Years ago we had a RAID (5 I believe) with no hot spare and we lost two drives at the same time and all of our VMs … definitely would not want to go through that again. Thanks for your input.
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Our file server (Win Server 2012 R2, soon to be migrated to 2019) has a single share (on a RAID) that is now over 3TB in size and it keeps growing. Since it's a VM I can easily expand the VHD. However, I am approaching the storage capacity of the physical hard disk on which it lives. Splitting up the share is not an option, as the entire organization uses this file server and UNC paths to files are used by everyone. I am considering just moving the entire VM to a larger RAID, but having a single 3TB VHD worries me. What is best practice for large file shares? Any recommendations? (I don't have a SAN. I'm happy with the performance of the Hyper-V VM)
Had our server Raid array fail and this had the key, how can I restore without they key

We are in the process of building a new server for all of our vessels. With the G8 DL380 we used all mechanical SAS drives in a raid 1 config with 2 arrays.

In order to duplicate the server (all our vessels run the exact same server) we would simply switch off the server and remove slots 1 and 3, place them in the new server and boot - no problem, worked every-time as long as you pressed F2 to accept that there was drives missing from the array. We would then put new drives in and mirror both arrays before being able to repeat the process.

Now with the new Gen 10 its not so simple it seems. When we have the drives in the new server it will recognize the the arrays, if we go into the array controller we can see that its aware of the missing drives and presumably would mirror OK however we have not tried. The problem is that it will not boot, even if we set what the boot volume is in the array controller. If we try to use Hirens boot USB with the array controller driver added it will see the SAS SSD (boot array, we use SSD for boot as the vessels need faster boot times in case of emergency) however the disk is not initialized and wont. The mechanical SAS is seen with a volume but its not accessible.

Does anyone know what process we should follow to move the array? We are making sure the source server is fully shutdown before we take disks 1 and 3 out. The drives are new HP drives. The process has been tried twice. Hirens boot USB can see the volume's OK on …
I have a single 12TB Drive with a VM Datastore I would like to move to another existing esxi server.  The server is a Dell PowerEdge T610 that has a free drive bay out of the 8 bays.  Question is can I add the drive to the RAID controller without having it formatted?  I am not looking to create a raid to the drive.  Just want to use it as a single drive and use the datastore on the drive.
Had a client that had a RAID Array failure, which resulted in lost data, that had to be recreated mostly by hand. The HD's did not fail, but the RAID Controller lost connection to 3 drives in cascading fashion on a 4 HD RAID 6 Array. The drives are good as they were put back in to function with the same RAID array for over a year now with zero issues. Including zero issues on the RAID Controller.

The insurance company is denying the claim for loss of use and cost to repair the OS and VM's and restore company functionality. The exclusion is "Wear and Tear".

The question is, what AGE range is considered to qualify for "Wear and Tear" for an Enterprise level server, with enterprise-level HD's? Obviously, a desktop computer would be rated lower than a server that is designed to run non stop and have less of a rate of failure.
I have a HP ProLiant DL360 g8 (2 processors, 64GB RAM, 2x quad port Gigabit LAN cards, and a HP P420i RAID Controller that can handle all RAID configurations including Raid 6 because of the Advance License) that I am upgrading to server 2016 enterprise edition from SBS 2011. I have 8 10K 900GB SAS drives that I would like to configu workre in a RAID configuration with various volumes built on top of the RAID array(s).  I am taking 6x 300GB 10K SAS drives out of the machine (to be used else where as needed).

The server will host at least 2 hyper-v VMs's - one to host exchange 2016 and the other as a file/app/web server which will require SQL Server Professional to run on the second VM. There might be a third VM to host sharepoint but this might be hosted elsewhere.

Additionally, I have an external raid array in a standalone device that is connected to the server via USB 3.0.  I also have 2 1TB SSD drives likethat I would like to attach the server via a dual USB drive cradle connected via USB 3.0.  There are also multiple USB 3.0 8TB external hard drives that are connected to be used as drive/data backup using Windows Server Backup (differencing backup running at least 1 but probably twice a day with replication to a remote off-site QNAP as a backup several times a week).

What is the best raid/volume confugaration for this setup. The Raid card does not have the optional battery installed.

OPTION 0: Should I do 4x 2-drive pairs in RAID 1, each for a different purpose …
I have a PowerEdge T610 with a Perc 6/i Integrated controller. when i look at it in Open Manage i can find the predictive failure drive and have i identified it by enable blinking on the drive. but i can't tell if it is a RAID level drive so i can replace it without shutting down the server? OpenManage shows 2 connector(s) the first Connector 0 RAID has 4 drives 0:0:0:0, 0:0:0:1, 0:0:0:2 and 0:0:0:3 all on line and good status. the other connector, Connector 1 RAID only shows 1 drive ID: 1:0:4 Physical Disk: Status show Non-Critical.  Drive details below. what i am trying to figure out is, is the drive part of a RAID array? Seem odd to have 1 drive sitting by itself not as part of a RAID.  Also, what data is on this specific drive?
in the OS Disk Manager is shows.
Disk 0  basic, Online and it has System Reserved and C: 323.15 GB NTFS (Boot)
Disk 1 Basic, Online and D: 930.50 GB NTFS
ID 1:0:4
Status Non-Critical
Name Physical Disk 1:0:4
State Online
Bus Protocol SATA
Media HDD
Failure Predicted Yes
Revision 1AJ30001
T10 PI Capable No
Capacity 465.25GB
Used RAID Disk Space 465.25GB
Available RAID Disk Space 0.00GB
Hot Spare No
Vendor ID DELL
Serial No. S2B6J90ZB04626
Part Number CN06R63F695180B701ISA0
Sector Size 512B
SAS Address 1221000004000000
3ware raid 5 assigning wrong unit number to replacement drive
I have a Lenovo P520c with 3 HD's and I want to RAID the drives. I have Intel Rapid Storage installed, I went into the UEFI and changed it from AHCI to RAID. How ever when I do that the PC wont boot and there is a warning on that setting stating changing it may cause it not to boot. My question is there a way I can get this RAID built out without blowing away the OS and rebuilding it?
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Dell PowerEdge T320 H310 RAID controller does not recognize all physical drives?
I have two identical T320 servers with Perc H310 controller. I'm trying to add an additional RAID 1 virtual drive for data partition. I purchased compatible drives for this server and installed then. When I enter the controller BIOS I only see drives 0,1 and 3 don't see drive 2. Both servers are giving me the same result. I thought it may have been a defective drive but I was able to eliminate that theory. I have updated both servers to the lasts BIOS, iDrac and controller firmware's. Any thoughts?
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 :)

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.
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.
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?
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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.
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]


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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