Enterprise SSDs now cost 18.6× more than HDDs — prices soar 6.5× in a year

Enterprise SSD prices have surged as the AI boom drives demand for high-capacity storage. According to the latest update to Vdura’s Flash Volatility Index, a 30TB TLC enterprise SSD now costs around $22,600, compared with approximately $1,216 for an equivalent-capacity hard drive.

That makes flash storage roughly 18.6 times as expensive as HDD at the same capacity. The gap has narrowed somewhat from a peak of 23.2× recorded in the first quarter, but flash remains dramatically more expensive.

A 30TB TLC SSD now costs about 6.5× more than it did a year ago, rising from $3,460 to $22,600. Vdura's index recorded another 5% increase in flash prices in July alone. HDD prices have also climbed, with a comparable 30TB drive rising from $495 in the third quarter of 2025 to $1,216 today — a 2.5× increase.

The difference becomes especially important for AI data centers, which need enormous amounts of storage. Vdura estimates that a 25PB storage system built entirely with SSDs would cost about $51.6 million at current prices. A hybrid system using both SSDs and HDDs would cost around $12.86 million, potentially saving nearly $39 million.

There is a catch, though: finding enough hard drives may be almost as difficult as paying for them.

Both Seagate and Western Digital have told investors that their nearline HDD production is effectively sold out through 2027. Western Digital was already sold out for 2026, with firm orders from its seven largest customers and agreements with several customers extending into 2027 and 2028. Seagate has similarly said that nearline capacity is almost fully allocated through 2027 under build-to-order contracts.

Customers without long-term supply agreements may therefore have to turn to the spot market, where prices can be significantly higher than Vdura's $1,216 reference price. Rosenblatt Securities analyst Sajal Dogra estimated the spot-market premium for HDDs at 30% to 40% in an August note.

NAND prices are under pressure as well. TrendForce's Q3 survey found NAND contract prices rising 10% to 15% quarter over quarter, following increases of 70% to 75% in Q2 and 55% to 60% in Q1. The first quarter also saw enterprise SSD contract prices jump by roughly 80% in a single quarter.