How to limit the speed of the SSD disk in the server to HDD speeds?

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Michael2020-05-01 23:22:07

System administration

Michael, 2020-05-01 23:22:07

I was interested in the phrase on Habré from one hosting company that they use SSD disks but limit their operating speeds to HDD speeds so that users do not kill them prematurely over cheap rates.
Question - how to implement this or where to read?
And to what extent is this method justified?

Thank you.

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4 answer(s)

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Viktor Taran, 2020-05-02
@happy-cat

plus ssd is not in their speed.
And in physiology
, they do not physically require turning the spindle to a certain sector
, as a result of which the IO ssd of the disk is not spent on the banal turning of the cluster to the head.
As a rule, hostings have 100 megabits on the Internet and physically do not need more than 8 megabytes per second.
but the number of files located in different clusters (and if this is a site, then at least hundreds of files in parallel)
here ssd show themselves excellently, it is almost impossible to waste disk IO, even if archiving takes place in several threads.
and here it's not about speed, but architecture and physical ability to work in parallel with files.
By the way, the same applies to NVme disks, but they are also 5-10 times faster than regular ssds, but here it’s also about the new interface, which also makes these disks ten times better than a regular ssd.

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Sanes, 2020-05-01
@Sanes

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Artem @Jump, 2020-05-02
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how to implement this or where to read?

See @Sanes answer

And to what extent is this method justified?

Some kind of game.
Sometimes people have nothing to do, they toil about all sorts of garbage, and come up with various idiotic rakes, so that later they can step on them. But busy with something. Therefore, if there is nothing to do, everything is better than drinking vodka.

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wickated, 2020-05-05
@wickated

Some kind of stupid marketing husk to justify different tariffs. It is the streams that limit it, the linear speed is higher than the channel width, but the number of operations per second can be cut for homeless tariffs so that the databases are not thrown at a cheap tariff. Run away from this hosting.