RAID 1 Synchronisation to be done at HP Server
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@lance No.I dont have the backup of data but when I connected the hot spare disk the RAID 1 booted without error.My question is that how to find the degraded hard disk in the server?
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@Lakshmana said:
Now I have added the one hard disk as Hot Spare for the RAID 1 and I need to synchronize the data in 3 rd hard disk which I configured the RAID1.How to Synchronize Data in the new hard disk?
You've mentioned you added a disk to use as a hot spare, from what I found Fake Raid can't have hot spares and can't support hot swappable drives. Either way, this is a really unique situation, your time might be better spent getting a good backup of the data, getting new drives, setting up a more recommend RAID and restoring.
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How do you know the array is degraded? During the boot only? Or is there something in the OS telling you that?
If you are getting nothing more than a popup in Windows that tells you that it's degraded, then there is probably something in the Event Logs that tell you exactly what port is degraded.
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@Lakshmana said:
@lance No.I dont have the backup of data but when I connected the hot spare disk the RAID 1 booted without error.My question is that how to find the degraded hard disk in the server?
A hot spare is already connected at the time of failure. Do you mean a cold spare? And when you put in the cold spare, you didn't remove the failed disk first?
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@lance said:
@Lakshmana said:
Now I have added the one hard disk as Hot Spare for the RAID 1 and I need to synchronize the data in 3 rd hard disk which I configured the RAID1.How to Synchronize Data in the new hard disk?
You've mentioned you added a disk to use as a hot spare, from what I found Fake Raid can't have hot spares and can't support hot swappable drives. Either way, this is a really unique situation, your time might be better spent getting a good backup of the data, getting new drives, setting up a more recommend RAID and restoring.
Fake RAID has no limitation conceptually here. Under the hood Fake RAID is just software RAID and any RAID can support hot spares, hot swap and even blind swap although very few support the latter.
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@Lakshmana said:
I just added new hard disk as hot spare and waited for 30 Minutes and after that I took the second hard disk connection out and made the server to boot the OS.It gave me error that raid device is degraded OS did not boot and after that I restarted the server.Then the server booted into the Windows Server 2008.How it is possible?
Can you supply a screen shot of the error? Seeing the actual errors is likely to help us a lot.
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@scottalanmiller OK.I will give the screen shot tommorrow.I came out of my office.
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@scottalanmiller Hai All.I have configured the RAID 1 and rebuilded the OS properly.I have attached the step by step process what I have done for the synching of data into the new hard disk.
Installation of RAID 1 in HP Proliant DL160 G5 Server
First of all Have 2 Hard Disk in the server and after that configure RAID in BIOS by clicking the option Boot-->Advanced-->IDE Configuration-->SATA as -->RAID
Then,boot press F8 go to disk utilities.After that go to Array Configuration and select the option as Create Array,After that press Insert Key to add the hard disk.
Click Yes
Configure Drivers.Then go to Create Array option Enter -->Select the type of Array say md0
After that Enter Create RAID via option as Build.Please try to understand the option specified as given during the configuration of the RAID 1.
Then,install Server Os in the system by installing the driver from HP website because the hard disk will not be shown after configuring RAID 1 in this Server.So download the driver from the following linkhttp://h20564.www2.hp.com/hpsc/swd/public/readIndex?sp4ts.oid=3580697
7)Then download the driver according to the 32 bit or 64 bit version of the OS to be installed in the server.
8)After the Click the Load Driver option in the OS installation process and give the path for the extracted file and then the server will show you the hard disk space and then you can configure the OS partition by your method according to the need of the partition.
9)Now test the hard disk and then the OS will boot in the two hard disk which was configured with RAID 1.
10)Then,disconnect any one of the hard disk from the RAID and after that add new hard disk which shoul be unallocated.Then,connect the new hard disk in the port in which you have disconnected the hard disk(RAID)ie)In my situation I have A and B hard disk and disconnected A harddisk and I connected the new hard disk to which I have already connected A hard disk.(SATA cable to be connected).
11)Then,press F8 button to go configure RAID rebuild process.This F8 button should be pressed when the system shows RAID device details in the monitor.
12)Then,go to the First option which will open the Main menu in that go to the Add/Delete Hotspare menu.After that add the new hard disk which to be added in the RAID.
13)Then,go to the Manage Array menu and after that select the RAID device and then Click Ctrl+R key to rebuild the RAID Array with the new hard disk.
14)Then the rebuilding of the data will be carried out more than 2 Hours according to the data present in the OS.After that boot the server and find that the RAID is rebuild by going to the OS without any errors. -
Sounds like all is well now.
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@scottalanmiller Yes everything Went Good and configured and Rebuided the OS
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So is this hardware or software RAID?
Also, There is no way to add the replacement drive to the system while the system is live?
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@Dashrender said:
So is this hardware or software RAID?
Also, There is no way to add the replacement drive to the system while the system is live?
It's software RAID.
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@Lakshmana said:
10)Then,disconnect any one of the hard disk from the RAID and after that add new hard disk which should be unallocated.Then,connect the new hard disk in the port in which you have disconnected the hard disk(RAID)ie)In my situation I have A and B hard disk and disconnected A harddisk and I connected the new hard disk to which I have already connected A hard disk.(SATA cable to be connected).
11)Then,press F8 button to go configure RAID rebuild process.This F8 button should be pressed when the system shows RAID device details in the monitor.
12)Then,go to the First option which will open the Main menu in that go to the Add/Delete Hotspare menu.After that add the new hard disk which to be added in the RAID.
13)Then,go to the Manage Array menu and after that select the RAID device and then Click Ctrl+R key to rebuild the RAID Array with the new hard disk.
14)Then the rebuilding of the data will be carried out more than 2 Hours according to the data present in the OS.After that boot the server and find that the RAID is rebuild by going to the OS without any errors.Am I misunderstanding that he's making these changes in the BIOS/before the OS loads? Pressing F8 happens when?
This is the part about Fake RAID I've never understood - you have to do something special in the BIOS, but at the same time you have to have a special driver loaded in Windows.
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@Dashrender said:
Am I misunderstanding that he's making these changes in the BIOS/before the OS loads? Pressing F8 happens when?
Yes, it's Fake RAID.
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@Dashrender said:
This is the part about Fake RAID I've never understood - you have to do something special in the BIOS, but at the same time you have to have a special driver loaded in Windows.
That's the "fake" bit. Just enough hardware to have something appear outside the OS, while all of the RAID itself is on software running on the OS. There is no hardware RAID, but there is hardware. But no more hardware than any SATA controller would have. ANY PCI card can present itself during POST and give you a menu. Your NICs do this all the time.
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@scottalanmiller said:
@Dashrender said:
This is the part about Fake RAID I've never understood - you have to do something special in the BIOS, but at the same time you have to have a special driver loaded in Windows.
That's the "fake" bit. Just enough hardware to have something appear outside the OS, while all of the RAID itself is on software running on the OS. There is no hardware RAID, but there is hardware. But no more hardware than any SATA controller would have. ANY PCI card can present itself during POST and give you a menu. Your NICs do this all the time.
Why does the hardware need to be involved at all?
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@Dashrender said:
Why does the hardware need to be involved at all?
To make it appear like people are buying hardware RAID. The whole purpose is to trick people into buying something worthless and making it seem good.
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@scottalanmiller said:
@Dashrender said:
This is the part about Fake RAID I've never understood - you have to do something special in the BIOS, but at the same time you have to have a special driver loaded in Windows.
That's the "fake" bit. Just enough hardware to have something appear outside the OS, while all of the RAID itself is on software running on the OS. There is no hardware RAID, but there is hardware. But no more hardware than any SATA controller would have. ANY PCI card can present itself during POST and give you a menu. Your NICs do this all the time.
Some Video Cards too. Thankfully the BIOS on my computer (an HP Z800) lets me disable or enable option roms per port as even though I have an SSD all my cards slow boot times down - a lot.
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Yup video cards can do that. OOB Management cards do this too (ILO, Drac, etc.)
