Post Install RAID Configuration?
I have a stand alone server running Arch 2009.08 x64 and it was configured via the 'Netinst' CD however during the time of the installation, the server had only one physical disk. I installed the system as follows:
* /dev/sda1 = swap
* /dev/sda2 = boot
* /dev/sda3 = /
* /dev/sda4 = /var
Now I have since obtained identical drives on this system which show up as /dev/sdb and /dev/sdc. Both of the new drives are identical. I have the system running perfectly however I would like to create /dev/sdb and /dev/sdc in a mirror. I can use 'cfdisk' utility to create RAID partitions on the newly installed drives using the 'fd' code. Can I simply just use 'mdadm' utility to create a mirror after I create the partitions with out messing up my configured / working Arch Linux server?
mdadm --create --verbose /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1
The Wiki has a write up (which I have never been able to get working) on RAID / LVM but this appears to be configured during the installation of Arch which I have already done. Not to mention I have followed the Wiki guide dozens of times to no avail. I even gave up on trying to install the swap and root partitions on the RAID and just do /home and it still fails.
Anyone know if I will run into any issues?
Well...
I think I finally got this working in a RAID1 mirror! I am pretty stoker right now because I have no idea what I did different every other time but it's working and she looks good...
FDISK
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0003e44e
Device Boot Start End Blocks Id System
/dev/sda1 * 1 498 4000153+ 83 Linux
/dev/sda2 499 5478 40001850 83 Linux
/dev/sda3 5479 38913 268566637+ fd Linux raid autodetect
Disk /dev/sdb: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000ba720
Device Boot Start End Blocks Id System
/dev/sdb1 1 498 4000153+ 82 Linux swap / Solaris
/dev/sdb2 499 5478 40001850 83 Linux
/dev/sdb3 5479 38913 268566637+ fd Linux raid autodetect
Disk /dev/md0: 275.0 GB, 275012124672 bytes
2 heads, 4 sectors/track, 67141632 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk identifier: 0x00000000
Disk /dev/md0 doesn't contain a valid partition table
MDSTAT
[root@mail ~]# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sda3[0] sdb3[1]
268566528 blocks [2/2] [UU]
/dev/md0:
Version : 0.90
Creation Time : Tue Dec 1 11:00:43 2009
Raid Level : raid1
Array Size : 268566528 (256.13 GiB 275.01 GB)
Used Dev Size : 268566528 (256.13 GiB 275.01 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Tue Dec 1 13:37:24 2009
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 94c95cea:6ead73dd:d14ae7e0:061e6ea4
Events : 0.36
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
Looks like this is exactly what I wanted!
Last edited by Carlwill (2009-12-01 18:47:09)
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As we all know,
the Windows Server Essentials Experience role is available in Windows Server 2012 R2 Standard and Windows Server 2012 R2 Datacenter. We can add the Windows Server
Essentials Experience role in Server Manager or via Windows PowerShell.
In this article, we introduce the steps to install and configure Windows
Server Essentials Experience role on Windows Server 2012 R2 Standard via PowerShell locally and remotely. For better analyze, we divide this article into two parts.
Before installing the Windows Server Essentials Experience Role, please use
Get-WindowsFeature
PowerShell cmdlet to ensure the Windows Server Essentials Experience (ServerEssentialsRole) is available. (Figure 1)
Figure 1.
Part 1: Install Windows Server Essentials Experience role locally
Add Windows Server Essentials Experience role
Run Windows PowerShell as administrator, then type
Add-WindowsFeature ServerEssentialsRole cmdlet to install Windows Server Essentials Experience role. (Figure 2)
Figure 2.
Note: It is necessary to configure Windows Server Essentials Experience (Post-deployment Configuration). Otherwise, you will encounter following issue when opening Dashboard.
(Figure 3)
Figure 3.
2. Configure Windows Server Essentials Experience role
(1) In an existing domain environment
Firstly, please join the Windows Server 2012 R2 Standard computer to the existing domain through the path:
Control Panel\System\Change Settings\”Change…”\Member of. (Figure 4)
Figure 4.
After that, please install Windows Server Essentials Experience role as original description. After installation completed, please use the following command to configure Windows
Server Essentials:
Start-WssConfigurationService –Credential <Your Credential>
Note: The type of
Your Credential should be as: Domain-Name\Domain-User-Account.
You must be a member of the Enterprise Admin group and Domain Admin group in Active Directory when using the command above to configure Windows Server Essentials. (Figure 5)
Figure 5.
Next, you can type the password for the domain account. (Figure 6)
Figure 6.
After setting the credential, please type “Y” to continue to configure Windows Server Essentials. (Figure 7)
Figure 7.
By the way, you can use
Get-WssConfigurationStatus
PowerShell cmdlet to
get the status of the configuration of Windows Server Essentials. Specify the
ShowProgress parameter to view a progress indicator. (Figure 8)
Figure 8.
(2) In a non-domain environment
Open PowerShell (Run as Administrator) on the Windows Server 2012 R2 Standard and type following PowerShell cmdlets: (Figure 9)
Start-WssConfigurationService -CompanyName "xxx" -DNSName "xxx" -NetBiosName "xxx" -ComputerName "xxx” –NewAdminCredential $cred
Figure 9.
After you type the commands above and click Enter, you can create a new administrator credential. (Figure 10)
After creating the new administrator credential, please type “Y” to continue to configure Windows Server Essentials. (Figure 11)
After a reboot, all the configurations will be completed and you can open the Windows Server Essentials Dashboard without any errors. (Figure 12)
Figure 12.
Please click to vote if the post helps you. This can be beneficial to other community members reading the thread.Part 2: Install and configure Windows Server Essentials Experience role remotely
In an existing domain environment
In an existing domain environment, please use following command to provide credential and then add Server Essentials Role: (Figure 13)
Add-WindowsFeature -Name ServerEssentialsRole
-ComputerName xxx -Credential DomainName\DomainAccount
Figure 13.
After you enter the credential, it will start install Windows Server Essentials role on your computer. (Figure 14)
Figure 14.
After the installation completes, it will return the result as below:
Figure 15.
Next, please use the
Enter-PSSession
cmdlet and provide the correct credential to start an interactive session with a remote computer. You can use the commands below:
Enter-PSSession –ComputerName
xxx –Credential DomainName\DomainAccount (Figure 16)
Figure 16.
Then, please configure Server Essentials Role via
Add-WssConfigurationService cmdlet and it also needs to provide correct credential. (Figure 17)
Figure 17.
After your credential is accepted, it will update and prepare your server. (Figure 18)
Figure 18.
After that, please type “Y” to continue to configure Windows Server Essentials. (Figure 19)
Figure 19.
2. In a non-domain environment
In my test environment, I set up two computers running Windows Server 2012 R2 Standard and use Server1 as a target computer. The IP addresses for the two computers are as
below:
Sevrer1: 192.168.1.54
Server2: 192.168.1.53
Run
Enable-PSRemoting –Force on Server1. (Figure 20)
Figure 20.
Since there is no existing domain, it is necessary to add the target computer (Server1) to a TrustedHosts list (maintained by WinRM) on Server 2. We can use following command
to
add the TrustedHosts entry:
Set-Item WSMan:\localhost\Client\TrustedHosts IP-Address
(Figure 21)
Figure 21.
Next, we can use
Enter-PSSession
cmdlet and provide the correct credential to start an interactive session with the remote computer. (Figure 22)
Figure 22.
After that, you can install Windows Server Essentials Experience Role remotely via Add-WindowsFeature ServerEssentialsRole cmdlet. (Figure 23)
Figure 23.
From figure 24, we can see that the installation is completed.
Figure 24.
Then you can use
Start-WssConfigurationService cmdlet to configure Essentials Role and follow the steps in the first part (configure Windows Server Essentials Experience in a non-domain environment) as the steps would be the same.
The figure below shows the status of Windows Server Essentials.
Figure
25.
Finally, we have successfully configured Windows Server Essentials on Server1. (Figure 26)
Figure 26.
More information:
[Forum
FAQ] Introduce Windows Powershell Remoting
Windows Server Essentials Setup Cmdlets
Please click to vote if the post helps you. This can be beneficial to other community members reading the thread. -
Mac Pro RAID configuration advice needed to address photography workflow
I am a semi-professional photographer and I am moving off a Windows machine and over to a Mac Pro.
I am waiting for the new Mac Pro to arrive and have purchased (4) 500GB SATA drives to replace the 250GB drive the system will arrive with.
I am considering setting up drive #1 as a stand alone boot drive. The second and third drives would be set up in a RAID 0 config and the 4th drive set up as a RAID 1 drive which would mirror the content on my RAID 0 set of drives to automatically backup the content on drives 2 & 3.
I think it would be beneficial if I describe my image processing workflow briefly so that you can understand why I am considering this RAID configuration (I've never set up a RAID configuration in the past so this is all new to me).
Image Processing Workflow
It isn't uncommon for me to return from a photo shoot with an 8GB Compact Flash card full (approx 750 8mb RAW files).
1) I plan on uploading my card to the boot drive (#1) where I would hold them temporarily.
2) I would sort thru the images and trash 80% immediately in most cases.
3) Next I would open up the "keepers" and do the initial post processing in Adobe RAW and save them to drives 2 & 3 (the RAID 0 set).
4) Further post processing (the heavy lifting and the most taxing operations in Photoshop and associated filters) would take place as I access these files from the RAID 0 set of drives.
5) All of my files would be mirrored to drive 4 as I work them. Once post-processing is complete I would copy the files from drive #4 (RAID 1)to an additional external 500GB drive for archiving purposes and then eventually delete the files from drive #1 and the RAID 0 set.
6) Once drive #4 (and the external drive) is nearly filled I would pull both and archive them and replace both with fresh drives.
Is there anything wrong with taking this approach? Can a single drive be set up in a RAID 1 configuration to mirror a set of drives in a RAID 0 configuration?
Is there anything else I should be considering?
Thanks for any assistance you guys can provide! I appreciate it!!For the purposes of 500GB drives in RAID, I would go with WD RE2. they format to 465GB and performance falls off @ 65% and beyond anyway.
I even "short-stroke" drives to just 60% and then stay within 1/3 full - if I want to insure the maximum I/O.
Memory: 4GB is pretty much minimum but using more than 8GB isn't efficient. Ideal: 4 x 2GB.
Shame that the Hitachi 1TB drive costs over $399 for now, fast and might be better than 10K Raptor. There are also 750GB drives for $249, but the RE2 isn't quite ready to ship.
Never want to get into using 75% or more usually, though large (8-20 drives) RAIDs can hold sustained I/O for video editing and multiple streams.
One 750GB or 1TB (930GB formatted, 800GB "usable") might make sense.
How about a SATA drive case w/ hot-swap. Think of 1TB "floppy" if you will :-)) Unlimited archiving of projects.
All you want is an inexpensive eSATA 1x 2-channel PM controller and any cases. Two drives that you can use drive trays as needed.
there are also 'spare' drive sleds if you want to have the option of popping a drive out, and use it internally. $29 each or $49 a pair.
http://www.xlr8yourmac.com - link to TransIntl site
Vista 64-bit can or does work quite well now on Mac Pro... if you ever get into a jam and just need to. SP1 by end of the year will even have more support for UEFI 2.0 (Apple uses Intel EFI 1.1). -
Hi all,
I need a script so that once it is run on windows 2012 server r2 ,snmp should be installed and configured automatically ,giving minimum user inputs.Things like snmp server ip,community string shouls be configured.
SNMP services should be up and running with the scriptHi,
Please check if you can use
Install-WindowsFeature PowerShell command to enable SNMP. Meanwhile, please also refer to following article and check if can help you.
How
to Install SNMP Remotely
However, based on your description, the issue seems to be more related to script. I suggest that you should
post it in
Windows PowerShell forum or
Official Scripting Guys forum. I believe we will get a better assistance there.
Hope this helps.
Best regards,
Justin Gu
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected] -
Which RAID Configuration for my WD "My Book Mirror Edition"?
About to reformat my WD "My Book Mirror Edition" to use on my iMac. I hope to also install on my iMac "Virtual Box", "VM Fusion", or "Parallels" and then run a few windows products. Which RAID configuration should I choose in the WD "drive configurations" box?
If I were you I'd run any Virtual Machine directly on your iMac, not on a "WD My Book Mirror Edition", in particular not when connected through USB 2.0.
To store data, the WD is fine.
For the RAID options:
RAID 0 ("striping") : if you want something fast (insofar this is possible with a USB connection). Note that when one of your disks fails you can say goodbye to all your data.
RAID 1 ("mirroring"): more safe. If one disk fails, the data are recoverable as they are on the other disk as well. Disadvantage is you get only half the storage capacity compared to RAID 0.
Oh. my personal recommendation: RAID 1 is not an alternative to making a backup. So whatever option you choose: if you store valuable data on the disk that are nowehere else: back them up!
On formats:
HFS+ : definitely recommended if you only use the RAID array on the Mac.
FAT 32: if you also use it on a Windows machine. Note that files cannot be larger than 4 GB in this case.
Hope this helps.
Eric
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