Consumer and data center drives play by different rules. The super high write speeds you see for consumer SSDs are usually achieved through tricks like using sections of the drive as a high-speed buffer and then using a background process to rewrite the data into the drive's high-density NAND storage during downtime. They can also use caching techniques that aren't resilient to power loss. They might allow burst performance that heats the drive up until it throttles.

This is all fine and even desirable for a consumer who will only be writing for at most a minute or two, but with a 245TB server drive you need to assume the performance will be needed constantly. They target sustainable and predictable performance.

A more convenient (and dare I say, faster) tape drive replacement for backups? They do make a good point, it would take 10*24TB drives working in the worst raid configuration to even come close to these speeds.

65 hours to restore a full backup

Extremely dense QLC chips. Still it's 2700-3000MByte, ie ~3GByte/second.

What should worry way more is DWPD which is abysmal... on the first glance. But if you punch it in the calc it still would take ages to wear it out.

                    SSD #1    SSD #2     SSD #3
    Capacity (GB)   245000    245000     245000
    Warranty (yr.)  3         3          3
    DWPD            0.3       1          0.075
    TBW (TB)        80482     268275     20121
    TBW (PB)        80.483    268.275    20.121
    PBW             80.483    268.275    20.121
    GB/day          73500     245000     18375
                
    Time period Average host-side write data rate (MB/s) needed for reaching DWPD value within specified time period
    8 hr.           2552.08   8506.94    638.02
    12 hr.          1701.39   5671.30    425.35
    24 hr.           850.69   2835.65    212.67

https://wintelguy.com/dwpd-tbw-gbday-calc.pl