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Are Disk Shelves Worth It?
(alien.top)
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this post was submitted on 22 Nov 2023
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Another reason not mentioned for having more disks is IOPs
For when you need performance along with the space.
If you need IOPS, you need SSDs. The days of getting IOPS from multiple hard disks have been over for a decade.
Ha, no.
SSD arrays absolutely have there place and I have deployed many for clients. But it is not the only performance solution. Like others have said capacity / performance planning is a must to know what you need and what you will need.
Hard drives are for capacity. SSD's are for performance. This has been settled for a number of years, and is why you see multiple levels of caching in front of any modern enterprise storage system.