Sata 2 or Sata 3?

Question

Hard disks

Here he writes that: https://ru.wikipedia.org/wiki/SATA

Sata 2 = data transfer rate of 300 megabytes per second
Sata 3 = data transfer rate of 600 megabytes per second

Question: does it make sense to overpay for Sata 3 when the read speed / records of ordinary disks does not exceed 180 megabytes per second? Or did I miss something?

Answer 1

Think for yourself - mat. It is better to take a board with SATA3. HDD - maybe SATA2 is enough (the standards are compatible with each other), but there is also the concept of "delay" - it seems to me that SATA3 is better with this.

Answer 2

If you plan to connect SSDs whose speed has long surpassed SATA2, then it makes sense to overpay for SATA3. But it is better to expand the context of the issue and clarify what exactly is planned to be purchased.

Answer 3

What kind of overpayment can we talk about, when all new disks are only sata 3 now and sata is apparently not released by anyone.

Answer 4

See how much you pay.
If 5-10%, I would overpay.
On operations with small files, where not only the speed of linear writing to the disk is important, the response speed will also be useful, and given the caching of the disk controller, this can be noticeable.

Answer 5

As mentioned above, the SSD decides. Also, think ahead, consider scaling up and buying a new drive.

Answer 6

Get off the task.
We live in a world surrounded by numbers.
Answer a couple of questions for yourself.
1. What is the peak load of the server/computer?
2. Average server/computer load?
3. How often does peak usage occur?
4. Is the file system a bottleneck on my system?
Question about the bottleneck of the system put yourself in any design of the server.

Answer 7

I always try to buy the newest - it's not kitsch, there are compatible drivers and firmware updates. This is especially true of RAM and ROM - only the newest and fastest!