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тАО04-16-2007 02:37 AM
тАО04-16-2007 02:37 AM
If i enter to the device manager i can see only two hard disks installed while physically i have 3.
I need an explanation to that please.
Also the RAM capacity is 4 GB. If i enter to the BIOS i can see the correct capacity of the RAM while if i right click the "My Computer" and go to properties i can see the RAM capacity is 3.25 GB
Kindly explain.
Regards,
Abdul R. Arab
Solved! Go to Solution.
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тАО04-16-2007 02:47 AM
тАО04-16-2007 02:47 AM
SolutionYou see two disks in windows because you have two partitions in the RAID 5 disk.
2- You must alter the boot.ini file to include the /PAE boot option to be able to detect all memory.
If you don't plan to install linux later, you missed the forum ;)
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тАО04-16-2007 03:43 AM
тАО04-16-2007 03:43 AM
Re: RAID 5
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тАО04-16-2007 04:48 AM
тАО04-16-2007 04:48 AM
Re: RAID 5
Hm. I disagee, because you still have all data on the remaining data disk drives. You are now running a RAID-0 set. Of course, it cannot withstand the loss of one more disk drive, but RAID-5 can't do that either.
What Ivan has described (multiple data disk drives with all parity stored on one disk drive) is called RAID-4. The problem with this is that it is not good for a large number of writes, because the parity disk drive is always being hit.
RAID-5 works around this by distributing the parity data across all disk drives in the RAID set.
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тАО04-16-2007 06:00 AM
тАО04-16-2007 06:00 AM
Re: RAID 5
This was a simple explanation. If you want a more "strict" definition, consider "the space of one disk" for parity. Most people know that the RAID 5 parity is distributed.
And for strict definition, it's not a RAID 4, maybe a RAID 3.
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тАО04-16-2007 07:23 AM
тАО04-16-2007 07:23 AM
Re: RAID 5
Ivan, not trying to be picky, just wanted Abdul to have a more accurate description of raid5.
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тАО04-16-2007 04:47 PM
тАО04-16-2007 04:47 PM
Re: RAID 5
Both, RAID-3 and RAID-4 use a dedicated parity disk drive, but RAID-3 uses a MUCH smaller chunk size than RAID-4 and RAID-5.
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тАО04-16-2007 06:25 PM
тАО04-16-2007 06:25 PM
Re: RAID 5
Ivan and all, would you explain more on how to do it.
Regards,
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тАО04-17-2007 01:27 AM
тАО04-17-2007 01:27 AM
Re: RAID 5
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1009988
Cheers.
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тАО04-17-2007 01:52 AM
тАО04-17-2007 01:52 AM
Re: RAID 5
Thanks alot you bailed me out of a dilemma :)