40 TB NAS storage recommendations...
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@sn said in 40 TB NAS storage recommendations...:
@Reid-Cooper RAID 5 (SAM - please excuse me :))
Uh oh, you'd better start running now. I'll try to distract him.
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@sn said in 40 TB NAS storage recommendations...:
@Reid-Cooper RAID 5 (SAM - please excuse me :))
You are kidding, I hope. With 40TB on WD Red (consumer, URE 10^14, 5400 RPM) the chances of RAID 5 saving your bacon approach zero. Even at 4TB RAID 5 is totally useless in that scenario. At ~4TB the chances of recovering a failed disk from URE risk alone is 50%. At 10x the size, 40TB has essentially no chance of recovery, and that is only from URE risk. Add in the risk that one of the seven remaining drives will fail during the long, slow resilvering process and the risk gets higher yet.
In ALL seriousness, RAID 0 is actually likely better at this size. You are passed the inflection point I believe where RAID 0 actually is less likely to lose data than RAID 5!!
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Many year old article on why RAID 0 gets safer than RAID 5 at scale.
http://www.smbitjournal.com/2012/05/when-no-redundancy-is-more-reliable/
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@scottalanmiller said in 40 TB NAS storage recommendations...:
It's a big deal knowing that someone like ioSafe will respond to a query here in like hours if not minutes.
Oops.....
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@Brett-at-ioSafe said in 40 TB NAS storage recommendations...:
@scottalanmiller said in 40 TB NAS storage recommendations...:
It's a big deal knowing that someone like ioSafe will respond to a query here in like hours if not minutes.
Oops.....
LOL. Better late than never.
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@scottalanmiller So what would you suggest in my case? RAID 10?
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@sn said in 40 TB NAS storage recommendations...:
@scottalanmiller So what would you suggest in my case? RAID 10?
Or RAID 6, but 40 TB might be close on 40 TB. I don't recall what the line is for moving to RAID 7 is.
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@Dashrender said in 40 TB NAS storage recommendations...:
@sn said in 40 TB NAS storage recommendations...:
@scottalanmiller So what would you suggest in my case? RAID 10?
Or RAID 6, but 40 TB might be close on 40 TB. I don't recall what the line is for moving to RAID 7 is.
RAID 7 isn't available on any units like that. So not an option for him. He'd need a SAM-SD to look into that.
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RAID 6 can be okay at that size still. Pretty big, but not overly big.
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@scottalanmiller said in 40 TB NAS storage recommendations...:
@Dashrender said in 40 TB NAS storage recommendations...:
@sn said in 40 TB NAS storage recommendations...:
@scottalanmiller So what would you suggest in my case? RAID 10?
Or RAID 6, but 40 TB might be close on 40 TB. I don't recall what the line is for moving to RAID 7 is.
RAID 7 isn't available on any units like that. So not an option for him. He'd need a SAM-SD to look into that.
I was wondering... Wonder also if a SAM-SD would cost less ...
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@Dashrender said in 40 TB NAS storage recommendations...:
@scottalanmiller said in 40 TB NAS storage recommendations...:
@Dashrender said in 40 TB NAS storage recommendations...:
@sn said in 40 TB NAS storage recommendations...:
@scottalanmiller So what would you suggest in my case? RAID 10?
Or RAID 6, but 40 TB might be close on 40 TB. I don't recall what the line is for moving to RAID 7 is.
RAID 7 isn't available on any units like that. So not an option for him. He'd need a SAM-SD to look into that.
I was wondering... Wonder also if a SAM-SD would cost less ...
Pretty much once you are into rack mount gear, SAM-SD costs less than "store bought." Plus you get more choices, features, flexibility and options like RAID 7.
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The Synology box just arrived and now on my table and RAID 7 is a bit too little too late.
