December 15, 2008 at 5:30 am
can anyone reply me please
December 15, 2008 at 5:59 am
Search in this forum mate, its a open Question, can you be a bit more specific so we can help 🙂
December 15, 2008 at 6:01 am
RAID = Redundant Array of Independent Disks
There are a lot of different types, just to point out the most important ones:
0 (Striping): Data is striped over multiple disks; this reduced the I/O poer spindle, thus increasing speed. Requires 2x HDD minimum.
1 (Mirroring): Data is mirrored to a second disk, thus each spindle contains all of the data. In case of failure of a single spindle the "mirror" can take over. Requires 2x HDD minimum.
10/01: combination of RAID0 and 1. Data is stored fast and safe. Requires 4x HDD minimum.
5 (striping with parity): Data is striped over over multiple disks, and a Parity Checksum is calculated on another disk. Requires 3x HDD minimum; IMHO it's the poor-man's-version of RAID10, but performs horrible when writing data ...
More about RAID: http://en.wikipedia.org/wiki/RAID
Finally, RAID is a way to store data faster and safer than on a single disk.
Regards,
Jörg
Jörg A. Stryk
MVP - MS Dynamics NAV
December 15, 2008 at 6:18 am
RAID is useful for fault tolerance.
James Howard
December 15, 2008 at 6:23 am
stryk (12/15/2008)Finally, RAID is a way to store data faster and safer than on a single disk.
Usually you are going to see a trade of in between "faster" and "safer", the driving idea behind RAID is reliability and availability rather than performance.
_____________________________________
Pablo (Paul) Berzukov
Author of Understanding Database Administration available at Amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.December 15, 2008 at 7:24 am
It's also excellent for getting rid of bugs
December 15, 2008 at 7:56 am
Nicholas Cain (12/15/2008)
It's also excellent for getting rid of bugs
You made my day! 😀
_____________________________________
Pablo (Paul) Berzukov
Author of Understanding Database Administration available at Amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.December 15, 2008 at 8:34 am
It's also excellent for getting rid of bugs
Brilliant! that's a interesting implementation of RAID. No more bugs on my SAN storage! :):)
Wilfred
The best things in life are the simple things
December 15, 2008 at 9:34 am
PaulB (12/15/2008)
Nicholas Cain (12/15/2008)
It's also excellent for getting rid of bugsYou made my day! 😀
So - remind me again -
What bugs does RAID 10 kill that RAID 5 doesn't?????:D
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Your lack of planning does not constitute an emergency on my part...unless you're my manager...or a director and above...or a really loud-spoken end-user..All right - what was my emergency again?
December 15, 2008 at 9:40 am
Matt Miller (12/15/2008)
PaulB (12/15/2008)
Nicholas Cain (12/15/2008)
It's also excellent for getting rid of bugsYou made my day! 😀
So - remind me again -
What bugs does RAID 10 kill that RAID 5 doesn't?????:D
The RAID 5 has 3 cans, you use two, and the spare kicks in should one of the others fail.
RAID 10 has 4 cans and double the spray rate, however due to it being more cans it cost more (however the performance is better and more bugs can be killed with a single shot)
December 15, 2008 at 11:58 am
Nicholas Cain (12/15/2008)
RAID 10 has 4 cans and double the spray rate, however due to it being more cans it cost more (however the performance is better and more bugs can be killed with a single shot)
This all depends. If you're one handed, it's not better performance. However when one can empties, you can hit the other without having to switch out cans.
K. Brian Kelley
@kbriankelley
December 15, 2008 at 12:09 pm
You have me there sir.
I think that there are potential improvements for all RAID levels, and we have to choose a RAID level that is right for us.
December 16, 2008 at 12:36 pm
The RAID 5 has 3 cans, you use two, and the spare kicks in should one of the others fail.
RAID 10 has 4 cans and double the spray rate, however due to it being more cans it cost more (however the performance is better and more bugs can be killed with a single shot)
Brilliant! Someone with a sense of humour! I like the RAID 5 and RAID 10 conotation!;););)
:-PManie Verster
Developer
Johannesburg
South Africa
I can do all things through Christ who strengthens me. - Holy Bible
I am a man of fixed and unbending principles, the first of which is to be flexible at all times. - Everett Mckinley Dirkson (Well, I am trying. - Manie Verster)
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