raid 5 on desktop mobo ...

popm8 · 20th Dec 2007, 09:48 PM

Hi!

If I make a RAID 5 with 3 hard disks on a mobo (for example asus p965/ intel ich8 raid) and my motherboard/raid controller becomes useless/dead how am I going to recover my data ?

is it possible?

thank you.

Adrian Wong · 20th Dec 2007, 09:57 PM

Hmm.. If your controller dies, your data will still be there. Just replace the motherboard. I don't think you need to rebuild the RAID array. Someone correct me if I'm wrong.

popm8 · 21st Dec 2007, 04:46 AM

hmm

when replacing motherboard you have to create a new raid5
and it says 'all data will be lost ; do you want to continue ? y/n '

am I wrong?

Adrian Wong · 21st Dec 2007, 12:55 PM

Quote:

Originally Posted by popm8

hmm

when replacing motherboard you have to create a new raid5
and it says 'all data will be lost ; do you want to continue ? y/n '

am I wrong?

I don't think so, but I could be wrong. Does anyone here have any experience doing this?

Majormaggot · 31st Dec 2007, 04:17 AM

if hes replacing it with the same mobo and the bios is set to boot from the correct controller then it should detect the raid 5 array with no problem.

might want to try running chkdisk on each drive and make sure theres no problems. i had a similar problem when there was a power outage and my 2nd raid drive had a damaged sector and the motherboard wouldn't detect the raid configuration.

Chai · 31st Dec 2007, 08:42 AM

Quote:

Originally Posted by Majormaggot

if hes replacing it with the same mobo and the bios is set to boot from the correct controller then it should detect the raid 5 array with no problem.

might want to try running chkdisk on each drive and make sure theres no problems. i had a similar problem when there was a power outage and my 2nd raid drive had a damaged sector and the motherboard wouldn't detect the raid configuration.

I'm wondering if different BIOS version will actually prevents that from working.

elton · 2nd Jan 2008, 03:31 PM

RAID 5 is running on parity, which mean a table to calculate the placing of the data....

The parity always save on the chip which it life support by battery, in case of your parity(controller) dead mean your can forget about all your data in your 3 HDD lo.... When battery failed there will always stated in your event log so people can change the battery when it going to dead... same concept like your BIOS...

The RAID controller is very important to have your RAID running... so i dun think you change the mobo and you can get the RAID 5 back... unless there is any transfer of parity which i not sure about that...

Adrian Wong · 2nd Jan 2008, 08:44 PM

Hmm.. Isn't the parity data stored on one of the hard drives?

elton · 15th Jan 2008, 05:13 PM

Quote:

Originally Posted by Adrian Wong

Hmm.. Isn't the parity data stored on one of the hard drives?

OK if i am not mistaken and assume this is software RAID 5, it store in hard drives is like how the data store as well...

So pray hard hope you do not have 2 hard drive failure at the same time... unless you have a hot spare drive then you can have max of 2 HDD failed...But i not sure software RAID 5 got the hot spare features or not

Chai · 15th Jan 2008, 05:42 PM

Oh, I didn't know there's a hot spare for RAID5.

20th Dec 2007, 09:48 PM	#1 (permalink)
popm8 Getting there Join Date: 30 Mar 2003 Posts: 160 Reputation: 12 Rep Power: 0	raid 5 on desktop mobo ... Hi! If I make a RAID 5 with 3 hard disks on a mobo (for example asus p965/ intel ich8 raid) and my motherboard/raid controller becomes useless/dead how am I going to recover my data ? is it possible? thank you.

20th Dec 2007, 09:57 PM	#2 (permalink)
Adrian Wong Da Boss Join Date: 10 Oct 2002 Location: In front of my BenQ Joybook 7000 notebook! Posts: 29,426 Reputation: 2830 Rep Power: 63	Hmm.. If your controller dies, your data will still be there. Just replace the motherboard. I don't think you need to rebuild the RAID array. Someone correct me if I'm wrong. __________________ Dr. Adrian Wong Tech ARP \| Blog @ Tech ARP \| The Free Trade Zone DYKT : The only offshore account I have is at the sand bank? Keep Tech ARP free! Visit our sponsors! We need PROGRAMMERS and TECHNICAL WRITERS! Contact us if you are a hot shot programmer or technical writer! My items for sale : 50x SD Card \| Memory Stick PRO \| Cyclone Energy Saver \| Seiko SS watch \| Tiger/Carlsberg beer jugs \| Travel Speakers \| Motorola V600 \| Nokia N90 SOLD! \| New Lowepro Mini Trekker AW Other items for sale @ the FTZ : Zalman CNPS9500 LED @ $20 \| Zalman CNPS7700 Cu @ $20 \| Zalman CNPS7000 Cu @ $20 \| Swarovski bracelet watches \| Dell 17" LCD \| Hi-Fi speakers \| English DIVX movies \| HP LaserJet toners! \| Office chairs

21st Dec 2007, 04:46 AM	#3 (permalink)
popm8 Getting there Join Date: 30 Mar 2003 Posts: 160 Reputation: 12 Rep Power: 0	... hmm when replacing motherboard you have to create a new raid5 and it says 'all data will be lost ; do you want to continue ? y/n ' am I wrong?

31st Dec 2007, 04:17 AM	#5 (permalink)
Majormaggot Getting there Join Date: 5 Sep 2005 Posts: 164 Reputation: 59 Rep Power: 4	if hes replacing it with the same mobo and the bios is set to boot from the correct controller then it should detect the raid 5 array with no problem. might want to try running chkdisk on each drive and make sure theres no problems. i had a similar problem when there was a power outage and my 2nd raid drive had a damaged sector and the motherboard wouldn't detect the raid configuration. __________________ Intel Pentium Dual Core E2160 @ 3.1 GHz 1.475 Vcore, Asus P5W DH Deluxe, 2GB Corsair XMS twin X 2, enermax galaxy 850w, Sound blaster X-FI Xtream Music, XFX 8800GT 512 MB, 2x 400GB Seagate HDD in Raid 0, 1x 250 GB WD HDD, 1x 120 GB WD HDD, A mighty Zalman 9500 cooler crying for help. and ArcticSliver 5, DVD drives n shizzle.

2nd Jan 2008, 03:31 PM	#7 (permalink)
elton WhAtSuPdOc Join Date: 22 Nov 2002 Location: Any place that have COM with NET Posts: 2,814 Reputation: 765 Rep Power: 15	RAID 5 is running on parity, which mean a table to calculate the placing of the data.... The parity always save on the chip which it life support by battery, in case of your parity(controller) dead mean your can forget about all your data in your 3 HDD lo.... When battery failed there will always stated in your event log so people can change the battery when it going to dead... same concept like your BIOS... The RAID controller is very important to have your RAID running... so i dun think you change the mobo and you can get the RAID 5 back... unless there is any transfer of parity which i not sure about that... __________________ Elton Tan IBM ThinkPad R60 AMD Barton 2500+ Abit NF7-S V(2.0) Corsair 256MBX2 PC3200 Seagate SATA 80GB Radeon 9200 SE 128MB Altec Lansing ACS 56 Sony Clie TH-55

2nd Jan 2008, 08:44 PM	#8 (permalink)
Adrian Wong Da Boss Join Date: 10 Oct 2002 Location: In front of my BenQ Joybook 7000 notebook! Posts: 29,426 Reputation: 2830 Rep Power: 63	Hmm.. Isn't the parity data stored on one of the hard drives? __________________ Dr. Adrian Wong Tech ARP \| Blog @ Tech ARP \| The Free Trade Zone DYKT : The only offshore account I have is at the sand bank? Keep Tech ARP free! Visit our sponsors! We need PROGRAMMERS and TECHNICAL WRITERS! Contact us if you are a hot shot programmer or technical writer! My items for sale : 50x SD Card \| Memory Stick PRO \| Cyclone Energy Saver \| Seiko SS watch \| Tiger/Carlsberg beer jugs \| Travel Speakers \| Motorola V600 \| Nokia N90 SOLD! \| New Lowepro Mini Trekker AW Other items for sale @ the FTZ : Zalman CNPS9500 LED @ $20 \| Zalman CNPS7700 Cu @ $20 \| Zalman CNPS7000 Cu @ $20 \| Swarovski bracelet watches \| Dell 17" LCD \| Hi-Fi speakers \| English DIVX movies \| HP LaserJet toners! \| Office chairs

15th Jan 2008, 05:42 PM	#10 (permalink)
Chai Administrator Join Date: 6 Oct 2002 Location: Maranello Posts: 26,115 Reputation: 3845 Rep Power: 70	Oh, I didn't know there's a hot spare for RAID5. __________________ Chai (Contributor & Forum Admin) http://www.techarp.com/