Raid 5 cache


smino

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Not Raid 5 via adapter card (unless you add drivers in yourself_

 

However, You you can have raid1 if you use an external case with a steelvine processor.

 

I've used the  AMS VENUS DS3R DS-2320SCBK  with success.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817332006

 

I have not used these.

http://www.newegg.com/Product/Product.aspx?Item=N82E16816215056

http://www.newegg.com/Product/Product.aspx?Item=N82E16816215068

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Take a look at this, I am considering getting it (mirrors 2 internal drives)

http://cooldrives.stores.yahoo.net/inbaymosaiir.html

Easy installation. No software set-up, driver set-up or hard drive partition is needed when installing in computer.

 

When computer is switched on, hard drive back-up starts automatically, including OS & partition of System Hard Drive (or the hard drive you are going to back up). LED indicator and free software (Free Software supports Windows Vista/XP/2000, Mac & Linux) enable you to monitor hard drive and system status.

 

When system hard drive crashes, the backup hard drive will replace and work as system hard drive automatically without putting your computer on hold.

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Take a look at this, I am considering getting it (mirrors 2 internal drives)

http://cooldrives.stores.yahoo.net/inbaymosaiir.html

Easy installation. No software set-up, driver set-up or hard drive partition is needed when installing in computer.

 

When computer is switched on, hard drive back-up starts automatically, including OS & partition of System Hard Drive (or the hard drive you are going to back up). LED indicator and free software (Free Software supports Windows Vista/XP/2000, Mac & Linux) enable you to monitor hard drive and system status.

 

When system hard drive crashes, the backup hard drive will replace and work as system hard drive automatically without putting your computer on hold.

 

I wonder if you could get 16 of these and mirror the whole system  :o

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Take a look at this, I am considering getting it (mirrors 2 internal drives)

http://cooldrives.stores.yahoo.net/inbaymosaiir.html

Easy installation. No software set-up, driver set-up or hard drive partition is needed when installing in computer.

 

When computer is switched on, hard drive back-up starts automatically, including OS & partition of System Hard Drive (or the hard drive you are going to back up). LED indicator and free software (Free Software supports Windows Vista/XP/2000, Mac & Linux) enable you to monitor hard drive and system status.

 

When system hard drive crashes, the backup hard drive will replace and work as system hard drive automatically without putting your computer on hold.

 

I wonder if you could get 16 of these and mirror the whole system  :o

 

Man, who has room in their cases for all that. 

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I was looking to do raid 5 for both performance and security as a cache drive.

Raid 1 would not cut it. Any other options?

Are there and riad 5 hardware cards supported right now?

 

I dunno if you can use a hardware card natively.

It may be possible if you use a hardware raid card and compile in the drivers manually.

There's no guarantee that unraid will see it unless you do some tweaking of the device id's and links.

 

If that does not work, It may require the use of the steelvine processor so that it just looks like a regular drive to the BIOS.

 

 

If I do a full islax nstall, will unraid recognise a software raid 5?

 

No, the MD driver is replaced and will only work with unRAID.

 

Why do you need raid5?

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Why raid 5? I like the speed and temporary safety when transfer files to unRiad cache.

Right now instead of move commands, I do copy/sync, make sure the files are off the cache drive, then delete them at the source.

Takes extra time and effort. I ofter transfer 8-12GB files on a daily basis to unRaid.

 

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  • 2 months later...

I think I found an expensive alternative: If I ever have 1500$ to spare...

So for the ubber rich who want the ultimate performance, use this as both Cache and Parity!

Prices will come down in a few years. It will be interesting to keep an eye on this.

 

ACARD is reasonable price for video editing!

ACARD ANS-9010 150MB/s write (245$ plus ddr2 cheap ram 40$ for 4GB and up) Problem is sata2 can only go so fast!

510MB/s in raid0. But limited to 64 GB of space.

http://benchmarkreviews.com/index.php?option=com_content&task=view&id=308&Itemid=60&limit=1&limitstart=11

 

Very cool price for 1TB of insane speed on the PCIe slot! 4GB version coming soon.

OCZ 1to4TB SSD PCIE card 400-500MB/s Write sustained speeds. 1500$ to 2000$

http://www.engadget.com/2009/03/05/oczs-z-drive-puts-1tb-of-blazing-ssd-capacity-in-your-pcie-slot/

 

Photofast:256MB-1TB 700MB/s Write sustained:

http://www.engadget.com/2009/03/26/photofast-intros-256gb-to-1tb-g-monster-pcie-ssd?icid=sphere_blogsmith_inpage_engadget

1,500,000 hours  compared to 1.2 M for Enterprise class Drives (although they are exposed to heat and spinnning…)

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  • 8 years later...
  • 4 months later...
On 11/20/2017 at 8:05 PM, bbanks said:

i just mount 3 ssd drives to the cache pool and run the balance option -dconvert=raid5 -mconvert=raid1

so far everything works as expected and have had no problems 

Are you still running your cache as raid5 without any issues?

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  • 9 months later...

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