Help Please RAID Five

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Guest

Does any one knows how to restore lost storage from RAID 5 (with 2 Hard drives)
explain when I installed Windows XP Pro the RAID was working fine hard drive
storage was visible and partioned all of a sudden RAID drive dissappear and
no longer Accessible and do not know how to restore it. I am not sure if
happened after started installing service packs 1 & 2. another things that I
have noticed is that IRQ used when first installed was 15 now is 5 when
ADAPTED SCSI CARD boots. used to show IRQ 15 now is IRQ have no idea what's
going on.

TIA
 
rabbit said:
Does any one knows how to restore lost storage from RAID 5 (with 2
Hard drives) explain when I installed Windows XP Pro the RAID was
working fine hard drive storage was visible and partioned all of a
sudden RAID drive dissappear and
no longer Accessible and do not know how to restore it. I am not sure
if happened after started installing service packs 1 & 2. another
things that I have noticed is that IRQ used when first installed was
15 now is 5 when ADAPTED SCSI CARD boots. used to show IRQ 15 now is
IRQ have no idea what's going on.

TIA
Click to expand...

RAID 5 needs a minumum of 3 drives. Did one of the drives quit working or
did you setup a different RAID configuration with 2 drives? With 2 drives
you could use RAID 0, 1, 0+1, 1+0 or jbod.

Kerry
 
Thanks for the input, it was working fine on fresh xp pro installation it
just dissapeared after service packs 1. and the answer to your question is a
RAID 5 but only have 2 20gb hard drives SCSI (0,1) and I don't think drives
or one of the drive died it has to be something with settings or mounting
drives.

Tnx any way.
 
As I stated before if you have 2 disks you never had RAID 5 setup. It is
impossible. RAID 5 works by calculating parity. There has to be at least two
disks to calulate parity and another disk to write the parity to. You have
to figure out what you actually had setup before anyone can help you.

Kerry
 
rabbit said:
Thanks for the input, it was working fine on fresh xp pro installation it
just dissapeared after service packs 1. and the answer to your question is a
RAID 5 but only have 2 20gb hard drives SCSI (0,1) and I don't think drives
or one of the drive died it has to be something with settings or mounting
drives.

Tnx any way.

:
Click to expand...


Kerry is correct. You do not and can not have a RAID 5 array with only
two drives, it is impossible.

Steve N.
 
Please pardon my Ignorance, but when I but the PC I was told that it has a
RAID 5 with 2 Disk (I looked at it 5 bays with 2 Disks and 3 bays left empty)
but looks like I was fooled I admit it., any way this is the situation here
when I first installed the Windows XP Pro I did not have or did any
configuration on the RAID the XP Installation process did that for me, please
donot ask me How, when system boots after installation completed I had 2
Storage Drive 1 ATA IDE with 80gb and 1 20gb SCSI from the RAID (C & D
Partitions) but when I installed the Service Pack 1 the 20gb SCSI disappeared
and I also noticed that the Adapter SCSI Card IRQ changed from 15 to 5. Do
not know how and have no clue, My Question is how can I restore the RAID back
or How can test to find out is not working.

Thanks Again.
And please forgive the misunderstanding.
 
We need the brand and model of the SCSI controller to help you. There are
several possibilities.

Is the system currently booting from the ATA drive? Was this the case before
you installed SP1? Have you changed anything in the BIOS? Did you change any
of the cables going to any of the drives? If the system is booting from the
ATA drive are there any exclamation marks in the device manager? What drives
show up when you run diskmgmt.msc?

Kerry
 
The SCSI Controller is an "Adaptec 2000S Ultra160 SCSI RAID Controller"
The System Boots from an "ATA Drive 80gb IDE Drive" not the SCSI I wanted
the SCSI as storage Slave. There is or There was none "Yellow Question Mark"
on the Device Manager everything looks like work properlly, Did not change
any of the cabling and did not change any on the BIOS. SCSI Adapter only
conected to the RAID System where the 2 SCSI Drives are. Other Devices Such
as DVD-ROM and DVD/RW and 80GB ATA Drive are IDE Connection.

It all happened right after I installed the Service Pack 1 without the
service pack the SCSI RAID was working I was able to see one partition of the
SCSI Drive and formated 20GB and have some file backup in it too. After
Service Pack 1, got Lost it.

Any Idea.!
TIA
 
When the computer starts up does the SCSI adapter screen come up before
Windows starts loading and list the SCSI drives? What drives show up when
you run diskmgmt.msc?

Kerry
 
Yes it does show the SCSI adapter screen but no Drives it used to shows
drives not anymore and the IRQ was 15 now is 9 the setting used to be 0,1
some but now it just show the adapter trying to configure the drives , any
input thanks again

When the computer starts up does the SCSI adapter screen come up before = Yes

Any Thought
TIA
 
Then it is most likely a problem with the cable, scsi termination, scsi
card, and/or one or both of the drives. This screen should show both drives.
As this screen is before Windows starts to load the problem cannot be
Windows. If the SCSI adapter BIOS doesn't see any drives then Windows won't
either. It is most likely a coincidence that after installing SP1 & 2 the
drives quit working. Did you make any hardware changes at all just before
installing SP1 & 2?

By the way there is no need to install SP1. You can install SP2 without
installing SP1 first.

Kerry
 
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