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Of the currently shipping products SSD has the highest density. Samsung has a 2.5" 15 TB SSD. The closest magnetic storage is 12TB 3.5". Another important fact
by wang_li 9y ago
Of the currently shipping products SSD has the highest density. Samsung has a 2.5" 15 TB SSD. The closest magnetic storage is 12TB 3.5".
Another important factor to remember is that your HDD will give you 200 MB/s of sequential data. If you have a random pattern it's going to drop to 10 MB/s or less. (15K RPM SAS drives can do around 150-170 random IOPS, assume 32 KB per operation and you're looking at 6 MB/s.) SSD will push out 10x+ that rate for random IOPS. A 100 TB HDD sitting behind 200 MB/s is painful but sitting behind 5 MB/s is insane. There's a place for such devices, but it's not serving your OLTP databases or kafka message queues.