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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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We have an Exchange 2010 server that will be decommissioned shortly but right now I need it to work.  It is rejecting mail from outside the organization as it only has 25GB of space left on the E: drive.  I'm worried about adding a drive to the RAID 5 the E: drive lives on and I want to know if it's possible and if it would be better to add a single drive to the server and set it up as the F: drive, create a mailbox store on the F: drive and move some of the mailboxes to that F: drive

Also how can I tell if a mailbox store is being used?  I believe I moved all mailboxes off of one of my mailbox stores but it is still showing that it is using 25GB of storage
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Hello experts,

I got to do a replacement of my T320 server failed hard disk drive.  I am currently in RAID 10 with 4 Hard disk drive, while each drive is (Part number:F617N, HARD DRIVE, 300G, SAS6, 15K, 3.5, S-EG, E/C), one hard disk is failed.

The supplier sale offer me "400-AJRR 300GB 15K RPM SAS 12Gbps 2.5in Hot-plug Hard Drive,3.5in HYB CARR" , I am not sure if this model of hard disk drive compatible with my server or not. the sale said it is compatible, so please help to advise any problem when I replace with this Hard disk drive, the server are running Win2008R2 and SQL 2008.

My Raid is PERC H710 Integrated RAID Cont roller, 512MB NV Cache, Full H eight

The original problem was yesterday when the user would click his mapped drive to the server c:/themainserver/bridgette. Well when he clicked on the shared drive and went to c:/themainserver/bridgette it would load a few times and allow him to edit the files and then when he would go to save everything it would freeze up and he would not be able to save any files.

When I was on the machine yesterday (The Actual Server) I was able to find the bridgette folder and started to copy it to a usb drive and it would fail after 30 seconds. I tried 2-3 times and same issue. I rebooted the machine and her whole profile disappeared. I read online there are issue with profiles and windows server 08 but  how would I go about getting the profile back? There are no server backups. I just took this job over so I'm slowly working to get it up to the proper standard.

The server has a RAID setup but idk what kind. The BIOS doesn't show me much at all. The hard drives plug into a controller. I'm unable to hook either drive to an external pc because the hard drive has  AIO for the sata cable and power adapter. I cant plug them into the drive individually

Now when I boot the pc it says "reboot and select proper boot device" in the BIOS, I have that hard drive set to boot first. I'm not a RAID pro but i think the RAID was setup to mirror. There were some files I needed off of it.

I have a newer server I'm going to move everything to assuming I can get this booted somehow so I can pull…
I am running a Dell T110 ii server with a PERC S100 controller, in what I am told is RAID 5, I am remote from the site so I cant confirm that it is defiantly RAID 5

We had a problem a few days ago when I saw the following errors in Dells Open Manager

Disk medium error detected: Physical Disk 0:1 Controller 0, Connector 0
Redundancy lost: Virtual Disk 1 (Virtual Disk 1) Controller 0 (PERC S100)
There is an unrecoverable medium error detected on virtual disk: Virtual Disk 1 (Virtual Disk 1) Controller 0 (PERC S100)

Disk 0:2 was Offline, and the Virtual disk was showing Degraded

I set disk 0:2 as Hot spare and it started to Rebuild the Virtual drive, which failed after 7 or 8%

I now have all 3 disks online but the Virtual disk is showing as Failed, the only option it gives me is Delete, which I am hesitant of doing, any pointers on what to do next, I don't know the condition of the drives apart from they say they are online

Disk 0:2 was offline but Disk 0:1 had the error?

So rebuilding a network and having to use existing hardware due to budget limitations, until we can replace hardware next year.

The server itself is an old Dell PowerEdge R900 - specced out with multiple CPU's and ~64GB of RAM. It has the PERC 6 / i RAID controller with 5 x 2TB hard disks.

My initial plan was 1 x RAID 10 Array with a hotspare. This worked and Windows loaded, however due to its age and non UEFI BIOS, it can't see anything more than 2TB. So i went back to the beginning and tried to create 2 partitions within the Windows server setup screen - but again it will create one partition and then throws errors trying to create additional partitions on the 1.6TB of remaining hard disk (doesn't matter what size).

From reading online it appears you can't create multiple virtual drives on a single RAID 10 array like i've done in the past with HP servers.

This leaves me with two options that i can think of..

1) Create 2 x RAID 1 mirrors and use 1 drive as a hot spare. This will give me 2 x ~2TB drives

2) Create 1 x RAID 1 mirror and 1 x RAID 5 with no hot spares (I actually have a physical spare drive so the hotspare isn't critical). This will give me maximum storage.

The server will run 1 x 2016 Domain controller for about 20 users, 1 x 2008 RDS server for 3 - 4 users, and i was planning to run 1 x application/file server too.

Open to suggestions and ideas.
Server: R710
RAID controller: PERC 6i
DELL Openmanager system management version: 8.3
RAID 1 disk: 750G, not OS, for share data drive
Need to change two 750G to 2TB HD. I already changed one 750G to 2TB by offline one old drive, pull out old, push in new 2TB  HD, then do the rebuild.
The question is how can I replace second 750GB to 2TB and increase disk size to 2TB.
Simply replace just create another 750GB disk.
I wish I do not need to initialize disk or take any risk to lost data.
EDITED Update:
It appears I am looking for the drivers for the Raid controller for the HP server for Server 2012 Stadard R2.
HP dl360p Gen8
p420i is the controller.

-Original post-
Need to find where these drivers are located.
New Seagate 12G, 10k, 900gig, SAS drives.
Almost new server and RAID was set up on these drives from the server array utility just fine.
Installing Server2012 Standard R2 requires the drivers.

Anyone know where they can be obtained?
A friend got a new server with 8 HDDs, he created a raid5+1 hot spare. and installed the os. after that he wanted to test whether the hot spare would would and he pulled a disk from raid5. successfully the hot spare was added to the raid5 and rebuilt the raid5.

Now the question is that the HDD he earlier pulled; he wants to put it back and use as the new hot spare. since there is some data in this HDD since it was participating in the raid5 earlier, will this work as hot spare? or else will he have to format this disk? if so, how to format? from ACU?
Hello, I was wondering if I could get some feedback/suggestions regarding a failed RAID hard drive.  I'm helping an office and they have the following configuration:

HP ML350 G6
Smart Array P410i controller
1 Array/ 1 Logical Drive - 6 TB
Drive configuration: 8 drives.  Bay's 1 - 8 have: HP 1 TB drives inserted

The drive in Bay 7 has recently failed (Red amber light).  The office believes the drive in Bay 8 was configured as a "hot spare" and automatically rebuilt (I see activity/green blinking light on the drive) when Bay 7 failed.

A replacement HP drive (same part #/size) has been ordered.   This is a production environment so I can't shutdown/reboot the server until this weekend.

Can I just insert the replacement drive into Bay 7 while the server is running?
Will the RAID controller automatically configure Bay 7 as the "hot spare"
Will the RAID Controller keep Bay 8 as an "active" drive in the array

Based upon the info provided, I'm basically trying to determine

1) What's the "best practice" on how/when to add the replacement drive into Bay 7
2) What actions will automatically happen when the replacement drive is inserted into Bay 7 (What would the RAID controller do?)
3) Do I need to reboot the server and make changes in P410i ORAC to get a similar setup as before (seven "active" drives in the array and one hot spare)

Thank you

Thank you

I have a LSI 9260-8i HBA controller with a 3 drive RAID 6 configuration.  I'd like to add a 4th drive to it.  I've read the docs but am not sure how the controller behaves exactly.  Does it bring in the new drive in the background while the array is in use, or do you have to wait until the process is complete through the card's BIOS UI?  That could take a while with 3-4TB of data on the current set.


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Further to my last question, here goes.
I have a gigabyte z97 mb with intel rapid technology on it that provides raid 1 that I require with a pair of Samsung ssd,s. I also need to encrypt the drives with bit locker  however I am confused regarding the mechanism when and if one of the drives fails.
Could someone please clarify if I am chasing my tail or is what I want to do practicable ?
We have a  Windows 2012R2 hyper V host. I was shock to find out my predecessor didn't set up RAID on it even it is equipped with a hardware RAID controller. Currently the OS is running on a single disk without any RAID. My plan is to clone the single disk to network drive and then put in two new hard disks to build a hardware RAID1. Then clone the disk from network to the RAID1 disk. Would it work?
I have a old Server with 2x SAS 73gb  hard disk and raid created. Windows 2012 installed on it, now i have a Problem not enough hard disk free space. There are two more free hard disk Slot on the Server.

i bought 2 x the same SAS hard disk . can i install These new hard disk without RAID and Windows delete?

Thank you so much for your help
I have a client who has a resident management system with a MS SQL Server 201x backend.

I built the server 8 drives with 3 raid groups
  1. has the OS,
  2. has the DB and
  3. has the Word Doc/Pdf/Xray Image Files stored in a folder structure.

The software vendor hasn't been able to answer some questions relating to the Db making think the vendor outsourced the DBA role and only know the basics.  e.g. every server they have build for clients I know, is built with the OS, SQL Server, DBs' etc on the one partition - they didn't know you could nominate the locations or spread them across different drives/arrays.

We use SQL FTP to backup the DB, which to my knowledge uses the Native MS Sql Backup to backup the DB, then FTP it to a NAS.

My Question
I asked the question "is the folder structure outside the db included in the backup".  They didn't know!!!!

So when the DBA designed the DB would they:
  1. Physically configure SQL server to include the folder structure in SQL backup  or
  2. Would the folder structure out side the DB be collected as part of the DB backup by default or
  3. (shaking now) it not get picked up by SQL's native backup util and rely on says Windows Server backup to backup those files

I cant restore the DB to check as I don't have the credentials, and the customer and I are getting v nervous that after 3 years running the product it has never backed up the hundreds of thousands of files attached to a resident record
I have used Dell's FREE OpenManage software multiple times, but never http://www.bitcon.be/hp-oneview-for-free-yes-indeed/

Is above the recommended FREE software so I can view my HP DL380 server's raid rebuild status ?

If not, what is recommended ?
I have a Dell Precision T7600 with a H310 RAID Adapter. there are two Virtual Disks. One for the OS (Ubuntu) and another for data. Two months ago I replaced the data volume with four new Western Digital 5TB drives in a RAID 10. Suddenly, this volume is unavailable. When I go into the RAID Controller and look at Physical Disks all disks are present but all four WD disk show as Foreign. Under Virtual Disks, the data volume shows only two of the four disks. One says Ready, the second says Rebuild and the other are Missing.

It seems highly unlikely that two disks failed simultaneously. There haven't been any electrical anomalies and all the fans and temp sensors in diagnostics are normal. I re-seated all of the drives and RAID Controller connections and no change. I tried Importing, which fails.

The data on this volume is really important. What would be the best way to recover this RAID?

Thanks in advance

We have a Dell PowerEdge T710 and there are a total of 8 x 450 GB (15k) SAS.  There are 2 Raid partitions:

- 2 hard Drives = Raid-1
- 6 hard drives = Raid-10

Someone else setup this server and I am not sure which hard drives are set for which raid partition.  I do not want to assume that hard Drive Slots '0' - '1' are set for Raid-1.  How can I verify?  Please see the attached picture.

Replace - 1
I know how big each partition is and I can see what is installed on each partition so I want to know which partition is in jeopardy.  My questions are:

1.  How can I find out which partition the bad hard drive is assigned to, the Raid-1 or the Raid-10?

2.  How can I replace the bad hard drive with a replacement hard drive without loosing the data?
I can obtain an old Poweredge 1950 III server with an Intel Xeon 5420 processor installed  and a SAS6ir raid controller. The spec sheets says it supports virtualization, I plan on using 2012R2 as the host. Are there any issues I need to be aware of as this is obviously an old platform. This config is for testing purposes
I am looking into Dell architecture for Exchange 2016 implementation using Dell servers. In storage section they are saying " Fourteen independent Raid 0 disks can be used to store copies of Exchange databases ( A Raid Controller Can be used to create independent Raid 0 volumes by using internal drives. ) " 

Are they saying to create 14 Raid and each Raid 0 with single disk?  Can any one elaborate this please?
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We have a old windows 2003 server with 4gb of ram with hardware raid 5. We are going to retire this server, but before we do so we need to transfer/clone/mirror about 900gb of data.  The problem is that it has almost 6 million files and any type of data transfer I have tried runs really slow.  I am thinking if there is a way to do with clonezilla or any other software that you guys can suggest.

I bought several of these servers off ebay and need to configure RAID (50 hopefully). After pressing F9 how do I get to the 410i controller (or whatever it is) to configure a RAID level?
I purchased four HP DL 380 G7 servers off ebay. The final goal is to eventually load ESXi 6.0 on each, but my question here is about the first step -  configuring the RAID array.

I've looked through some youtube videos and it appears the folks are using HP SmartStart Setup and Install CD (ver8.70) and using the Maintenance/HP Array Config & Diag utility to control the P410i in creating the array.

I had a very hard time finding this software CD. I had to choose HP DL 380 G7 and then choose an O/S in order to see it listed. I saw it listed under Windows 2003 and Windows 2008R2.
Windows 2003      - Shows a 32 bit version
Windows 2008R2 - Shows a 64 bit version

Does it make any difference which "HP SmartStart Setup and Install CD" I choose? I downloaded the 64 bit version from Windows 2008R2  thinking it doesn't matter if all I'm doing is using the RAID utility. Does it matter if its 32 or 64 bit version? Again the end game is to install ESXi 6.0.

We have Dell server poweredge 610T and one of the disk is failed.  We need to replace the disk and rebuild the raid 5.
What are the steps I need to do after I put the new disk.  Can someone explain step by step? Thanks in advance.
Dell R710 - 4 disks in a RAID5
Disk in Slot 3 - Predicted Fail - status light blinking green to amber, back to green to amber..
NO IDRAC in this server
Host OS - XenServer 6.2
VMs - 1 Virtual Machine running on XenServer

Using MegaCli ran the following command to force the drive offline
./MegaCli -PDOffline -PhysDrv [32:3] -a0
(returned that drive was offline)

Verified drive was offline by running
./MegaCli -PDInfo -PhysDrv [32:3] -a0

*** NOTICE LINE BELOW THAT SAYS Firmware state: Offline ***
Enclosure Device ID: 32
Slot Number: 3
Drive's position: DiskGroup: 0, Span: 1, Arm: 1
Enclosure position: N/A
Device Id: 3
Sequence Number: 3
Media Error Count: 21
Other Error Count: 0
Predictive Failure Count: 34
Last Predictive Failure Event Seq Number: 17284
PD Type: SAS

Raw Size: 279.396 GB [0x22ecb25c Sectors]
Non Coerced Size: 278.896 GB [0x22dcb25c Sectors]
Coerced Size: 278.875 GB [0x22dc0000 Sectors]
Sector Size:  0
Firmware state: Offline
Device Firmware Level: 0008
Shield Counter: 0
Successful diagnostics completion on :  N/A
SAS Address(0): 0x5000c50048669fa9
SAS Address(1): 0x0
Connected Port Number: 3(path0)
Inquiry Data: SEAGATE ST3300657SS     00086SJ3FV95
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: Unknown
Link Speed: Unknown
Media Type: Hard Disk Device
Drive Temperature :36C (96.80 F)
PI Eligibility:  No
Drive is …
Hi there,

this is a very simple question. What's the Dell utility that allows you to monitor the state of the server, including HD status..?

the point: i worked on a new client the other to replace a HD in a raid system, it was a Dell poweredge t130 i belive, it was running windows.  The utility was loaded on the server and one of the office person logged in into it for me, i was able to see the faulty HD id, sn, etc..

we're replacing that sever but i don't really remember the name of the Dell utility they had me use, i found it so useful that i'd like to purchase along the the new server.

Your help is greatly appreciated..


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.