The Textbook Things Gone Wrong in IT Thread
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@scottalanmiller said:
@Dashrender said:
Sounds like a single server with possibly direct attached external storage (if needed for the number of spindles for performance - assuming you can't afford SSD storage) would do the trick - again unless you have work load that requires huge amounts of compute power.
SSD would be far less than the cost of a DAS chassis and spindles. You could be at a million IOPS for cheaper!
With enterprise drives? Granted I haven't looked at them recently so I really have no clue how much enterprise class SSDs with a RAID 10 array of 6 TB usable would be - though I'm guessing at least $10K just in drives, not counting the enclosure!
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@DustinB3403 said:
SAM, again this is the same MSP making this recommendation as in past conversations. . .
Yes, and whoever brought them in seems to be very textbook in their mistakes. Textbook business mistakes (bringing in a reseller claiming to be an MSP who is sending salespeople instead of engineers), getting advice from salespeople who aren't even remotely IT people, using a SAN where it doesn't make sense, etc.
As is often the case, it's an onion. One bad textbook mistake happens because another was done. The SAN might be the top layer. That only happened because a reseller was brought in for advice. That was only done because the IT manager doesn't know IT but doesn't want anyone else to know and is hoping to get someone else to do their job, but since they are trying to hide that fact they can't pay for the advice so have to get free advice from the salespeople. But those things together and the person entrusted to provide good IT advice isn't just not doing their job at all, but has sold the company out to the very people they should be protecting the company from.
The onion of bad IT decision making
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Lets all go out and build a 6TB SSD NAS just for price comparison.
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Updated my post to indicate drives only, not including enclosure.
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@DustinB3403 said:
Lets all go out and build a 6TB SSD NAS just for price comparison.
You wouldn't build it as a NAS, that would be just as foolish as the external storage already there. It's doing it internal and saving all the money of the extra nodes AND the external storage that makes it SO cheap. I mean seriously cheap.
$2,464 for a RAIDed 6TB SSD setup with more than a half million IOPS. This will take nearly any enterprise RAID controller to its IOPS limits.
Are you really paying less than this for the external storage unit AND all of the extra servers?
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And that is if you leap directly to 6TB today (usable) instead of starting with 4TB and growing later. And that fits easily into a chassis like an R730 with tons of room for future growth.
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I can't possibly state how bad of an idea it is to have an external enclosure for this BUT I could, just for hypothetical cases, build a 6TB pure SSD NAS, rackmount, full enterprise server chassis.... $3,400. I literally just priced out the drives and server for it.
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I just priced a unit for about the same cost for just the chassis and the drives.
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@DustinB3403 said:
I just priced a unit for about the same cost for just the chassis and the drives.
Not too hard to do. SSDs are not that expensive anymore.
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What else is there besides chassis and drives?
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I didn't go any further, it wasn't worth the time.
Ha
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But just so it's out there: http://www.newegg.com/Product/Product.aspx?Item=N82E16817994147
and 6 of these http://www.newegg.com/Product/Product.aspx?Item=N82E16820147362
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@DustinB3403 said:
I didn't go any further, it wasn't worth the time.
Ha
There isn't any further. $3,400 is what it would cost.
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@DustinB3403 said:
But just so it's out there: http://www.newegg.com/Product/Product.aspx?Item=N82E16817994147
and 6 of these http://www.newegg.com/Product/Product.aspx?Item=N82E16820147362
You are short a drive, you'd need seven not six for 6TB. But those prices are $100 too high for that drive anyway.
That hardware isn't useful, that's a consumer backplane. I priced out an actually enterprise Dell server for the drives and seven of them with RAID overhead handled. Real enterprise grade storage, $3,400.
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I know it's a consumer grade unit, but the unit has 1 internal bay for "Backup" making it 7 (even though that would be stupid as all gitup).
Which is still not worth it to dig any further for a 6TB SSD NAS.
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And if we wanted a true 6TB of usable space in RAID10, we'd need 12 drives.
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@DustinB3403 said:
I know it's a consumer grade unit, but the unit has 1 internal bay for "Backup" making it 7 (even though that would be stupid as all gitup).
But it isn't a NAS chassis, it's only a drive holder. It's not a usable device on its own. It's not applicable at all. That isn't what a NAS is.
The number of bays is one issue, the number of drives though for pricing needs to be 7.
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Which the MSP is again recommending RAID5. . . . ... . .
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@DustinB3403 said:
And if we wanted a true 6TB of usable space in RAID10, we'd need 12 drives.
But you don't use RAID 10 on SSD, you use RAID 5. So seven. Trust me, I just went through all of this to figure out what an enterprise storage unit would look like for this use case. $3,400, after RAID. I've been quite clear that I accounted for all of that.
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Why wouldn't you use RAID10 with SSD's? I must've missed the article.
