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In place upgrade of RAID1 to RAID5 - Page 2

post #11 of 32
Thread Starter 
Quote:
Originally Posted by rpm666 View Post
Currently I'm using an HP p400i with 512MB of ram

http://www.provantage.com/hewlett-packard-hp-508833-b21~7HPP93LC.htm

I would consider this higher end.
Holy crap... thats expensive...

Thanks for all the help guys. I'll look into getting a dedicated controller post back here with any thing else.

+rep to all
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post #12 of 32
Just out of curiosity, what data do you have that requires that type of dedication? I only ask because that is a lot of money to spend in "assurance" vice "performance". Your average gamer/enthusiast would run raid but typically raid0 for performance purposes. I usually only run raid5 on servers that need to stay available 24/7 365 so customers have no interruption in service. My home solution is a backup of only my "non-replaceables" and disks on hand in case of a reload....which sometimes I do just for fun anyway.

If your data is ubber important requiring those dedicated resources then I would recommend external storage for the immediate x-fer prior to attempting the migration to 5, this way your "non-replaceables" have a home for the possible total data loss. Just my 1 and a half cents...(I am not cool enough to add 2).
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post #13 of 32
Thread Starter 
Quote:
Originally Posted by greg1174 View Post
Just out of curiosity, what data do you have that requires that type of dedication? I only ask because that is a lot of money to spend in "assurance" vice "performance". Your average gamer/enthusiast would run raid but typically raid0 for performance purposes. I usually only run raid5 on servers that need to stay available 24/7 365 so customers have no interruption in service. My home solution is a backup of only my "non-replaceables" and disks on hand in case of a reload....which sometimes I do just for fun anyway.

If your data is ubber important requiring those dedicated resources then I would recommend external storage for the immediate x-fer prior to attempting the migration to 5, this way your "non-replaceables" have a home for the possible total data loss. Just my 1 and a half cents...(I am not cool enough to add 2).
Well... I have about 5-6 years worth of irreplaceable video footage, most of which is now in HD since about 2 years ago. I have have hundreds of thousands of massive photos. Basically my rig a video editing rig. Currently, I have the data stored on my 2TB RAID1 array, with another copy of the array on my external. I just find that sometimes when I render video, my array hits a wall and just can't pass enough data. I've heard that a RAID5 array is faster than a RAID1, so I was looking into that.

Otherwise, which other type of array would you recommend? I need something provides data protection as well as performance.
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post #14 of 32
I would look into a external esata RAID storage box.

http://www.newegg.com/Product/Produc...82E16816132029

I have one of these connected to my server and it is decently fast in RAID 5. About 85/mbs sustained transfer. I also got mine open box for $80 after shipping.
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post #15 of 32
Raid5 obviously offers performance over raid1; however, I run roughly 60 servers with raid5 and on average for data recovery purposes we get a 60% assurance out of it. That is that 40% of the time it seems to fail or something gets lost. Now with that obviously I run clusters and other things to ensure no down time. If you're going to do it I would go with the hardware you have vice purchasing a dedicated card (on-board controllers have came a long way) and restore off your external backup. Do a clean install in the 5 configuration and move the data over.

Another question - Do you leave your system on all the time?
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post #16 of 32
Quote:
Originally Posted by rpm666 View Post
I would look into a external esata RAID storage box.

http://www.newegg.com/Product/Produc...82E16816132029

I have one of these connected to my server and it is decently fast in RAID 5. About 85/mbs sustained transfer. I also got mine open box for $80 after shipping.
I concur; a very easy option and in your situation probably the best.
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post #17 of 32
Thread Starter 
Quote:
Originally Posted by greg1174 View Post
Raid5 obviously offers performance over raid1; however, I run roughly 60 servers with raid5 and on average for data recovery purposes we get a 60% assurance out of it. That is that 40% of the time it seems to fail or something gets lost. Now with that obviously I run clusters and other things to ensure no down time. If you're going to do it I would go with the hardware you have vice purchasing a dedicated card (on-board controllers have came a long way) and restore off your external backup. Do a clean install in the 5 configuration and move the data over.

Another question - Do you leave your system on all the time?
I turn the computer on on weekdays at around 3.30pm and leave it running until about 12.30 - 1.30 am. After that, its back on the next day at 3.30pm. On weekends, its almost up 24/7.

Quote:
Originally Posted by rpm666 View Post
I would look into a external esata RAID storage box.

http://www.newegg.com/Product/Produc...82E16816132029

I have one of these connected to my server and it is decently fast in RAID 5. About 85/mbs sustained transfer. I also got mine open box for $80 after shipping.
GENUIS!!! I wish I could double rep you... The price is perfect for my needs and it looks like it would do everything I need.
Question: What type of array do you get 85MB/s sustained (0,1,5, etc)?
Also, whats the bottleneck of an esata port - i'm assuming 3Gbps. Am I correct to assume that current hard drives would not even come close to saturating that?
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post #18 of 32
In the 4 bay storage box I have 3 250's in RAID 5 Striped, and a single 1TB for additional non critical. Eventually I will put 4x 2TB drives in it, but I have not had the need just yet. The eSata port will be able to transfer as fast as the disks can read/write - I see absolutely no performance issues with it (for the price).

CHEAP RAID 5 (3x250GB 7200 RPM eSata)



Expensive RAID 5

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post #19 of 32
Quote:
Originally Posted by graphicsman View Post
FYI, ive seen many threads on here about people mentioning that the WD green drives dropping while in RAID due to the power saving features.
this...

and also how did you get them to raid..... all my mobos never wanted to set them up as raid.........
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post #20 of 32
Thread Starter 
Quote:
Originally Posted by rpm666 View Post
In the 4 bay storage box I have 3 250's in RAID 5 Striped, and a single 1TB for additional non critical. Eventually I will put 4x 2TB drives in it, but I have not had the need just yet. The eSata port will be able to transfer as fast as the disks can read/write - I see absolutely no performance issues with it (for the price).

CHEAP RAID 5 (3x250GB 7200 RPM eSata)



Expensive RAID 5

Thats a massive difference - almost 2 times.... How expensive exactly was this "expensive" RAID solution?
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