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Use a normal disk drive for parity with 2 SSDs in RAID 5?? - Page 2

post #11 of 16
Quote:
Originally Posted by SHNS0 View Post
I'd call that a server
Do you have 12TB on JBOD? Honestly, I'd raid 5 em.

Hell, I'd even raid 6 em.
Agreed, I do a RAID 5 and I only have 3.4TB of data (though that is over 6 discs)
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post #12 of 16
Quote:
Originally Posted by SHNS0 View Post
Do you have 12TB on JBOD? Honestly, I'd raid 5 em.
Likewise.

If you're feeling really adventurous, you could also try RAID 1+0 (mirrored stripes) or 0+1 (striped mirrors).
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post #13 of 16
Quote:
Originally Posted by MCBrown.CA View Post
If you're feeling really adventurous, you could also try RAID 1+0 (mirrored stripes) or 0+1 (striped mirrors).
TOTALLY useless imho, just a waste of drives/gigs/money
     
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post #14 of 16
Quote:
Originally Posted by SHNS0 View Post
Do you have 12TB on JBOD? Honestly, I'd raid 5 em.

Hell, I'd even raid 6 em.
Nah, RAID-5 (or any striped RAID) is way too risky for me. I just run unRAID on my server which is kinda like RAID-4 but without the striping. I get parity protection so the array can withstand a single drive failure, but at the same, if I lose two or more drives, I don't lose the whole array - just the data that's contained in the failed drives. For me, that's a fair compromise for the relatively low cost (1 extra HDD for parity + unRAID license). The data itself isn't irreplaceable. It's just a big hassle to have to re-rip all those movies and TV shows.

I do plan on building a 1:1 backup server eventually when hardware and storage costs go down a bit.
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post #15 of 16
Raid 4 is really slow (that is why it is not used in the enterprise world)..... i mean you can, but there are much better options.... if you dont' care about speed i guess that is fine, it also works that parity drive like crazy and could kill it more quickly.....
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post #16 of 16
using mechanical drives with ssd's will slow down your overall performance

as of right now to my knowledge there are no raid controllers that support trim for ssd's so part of the reason you get speed out of the ssd will be taken out of the loop
that said I have raided 2 64gb ssd's and it was faster than a single ssd by itself.
according to windows experience index my disk data transfer rate went from a 6.9 to a 7.2. its not major but its faster. both ssds are rated for up to : 280 mb/s read and 270 mb/s write

its not a perfect world so I dont expect things like double my transfer rates.
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