RAID for HDD and SSD

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Zhubinator

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Jul 13, 2017
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Hello. I built a whole new machine from scratch using Ryzen 5 1600 several months ago and as of now I have 3 different drives. One 1TB SSD(Samsung Evo) and one 250 GB SSD(Samsung Evo) and one 2TB Blue Western Digital HDD and the last one has NOTHING on it yet. I am mostly planning on using it for storage purposes. But I had a thought and I don't know if it's worth pursuing or not. I heard about RAIDs a while back and like to know if it's doable to pair an SSD with an HDD, and a slow one at that, in a RAID format. If so what's the best RAID format, and what are the possible consequences and risks involved. If it's too risky, then I'll just stick with the set-up I already have. Given that transfer speeds of a 5400RMP drive and that of an SSD are day and night, I wonder if there would be any file corruptions. I would appreciate your answer.
 
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failboat
If you can get your os and important apps on the ssd that will be your best bet. there are some cache alternatives but i don't think they are great. maybe look into the intel one or microsoft spaces /w cache at least. raid generally recommends two or more of similar speed and size drives. it will cap speed at the slowest and size at the smallest. it's more for uptime and seq r/w performance and still requires backups because restoring a raid is complicated.

one setup could be 1TB SSD OS + (250GB ssd cache + 3 WD hhds in raid 5 configured in microsoft spaces) cache is mostly wasted if you just store pics,music,movies. it will only help a little with random access times which takes a big hit from being in raid5.
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failboat

failboat

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Feb 19, 2010
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If you can get your os and important apps on the ssd that will be your best bet. there are some cache alternatives but i don't think they are great. maybe look into the intel one or microsoft spaces /w cache at least. raid generally recommends two or more of similar speed and size drives. it will cap speed at the slowest and size at the smallest. it's more for uptime and seq r/w performance and still requires backups because restoring a raid is complicated.

one setup could be 1TB SSD OS + (250GB ssd cache + 3 WD hhds in raid 5 configured in microsoft spaces) cache is mostly wasted if you just store pics,music,movies. it will only help a little with random access times which takes a big hit from being in raid5.
 
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USAFRet

USAFRet

Titan
Moderator
Mar 16, 2013
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That is quite possibly the worst drive setup you could make.
With any RAID type.

Do not do this.
 
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