The Kioxia CD8 line goes well beyond lower capacities found in many servers. Instead, we have the PCIe Gen5 NVMe SSD at a 30.72TB capacity, making it denser than today’s hard drives. This may not seem like a big deal, but high-capacity PCIe Gen5 storage is exactly what a segment of the market demands when they want both capacity and speed. Let us get into this one.
Kioxia CD8P-R 30.72TB Overview
The Kioxia CD8P-R looks like many of the company’s other SSDs. We did not even notice that this one was 30.72TB when it came in.
The drive itself is a standard 2.5″ SSD design. Some SSDs are covered in heatsink fins, but Kioxia is not doing that here.
Here we have our power and data connections.
Here is the other side.
This is one of the more interesting drives because it is one where one trades some performance for capacity In most cases, the drive is faster than the 1.92TB version, but slower than the 15.36TB version. The Kioxia CD8-R family is generally a read optimized capacity play instead of the maximum performance per drive.
At 30.72TB, 1 DWPD is a lot especially since these high-capacity drives are more likely to be storing media not just small files. We recently did a used data center SSD survey and found that most drives, even at much smaller capacities, were using well under 0.5 DWPD. On a large capacity drive like this, 1DWPD feels generous.
Now, we have had the chance to look at one in a hands-on review. Let us get to that next.
I did not see the $/TB cost nor an estimate on expected power-off data retention.
In addition to @Eric’s comment I’d like to see latency (with charts like StorageReview does).
If all the info could be presented in a chart like @Patrick’s excellent CPU comparison charts (such as the style of “AMD EPYC 9004 Genoa SKU List And Value Analysis Comparison To Milan And Rome By Core Count”), but for SSDs instead of CPUs that would be a valuable addition.
> The Kioxia CD8P-R is not designed to be the highest capacity drive, but instead as a balance point between cost, capacity, and price.
I saw neither cost nor price, so the last sentence does not make sense.
For those asking about the cost per TB, data retention lifetime and latency, here is what I could find from a very quick search:
Unit price: $4,799.00 at Newegg.com for model number KCD8XPUG30T7 (This will likely be the same or close to the same for other vendors.)
$/TB: $156.22
Latency and data retention are not given. This would be a datasheet item and this isn’t given in any of Kioxia’s documentation. Kind of a fail on their part.
What i know, Data-Retention is always the same. No real details, only JEDEC standards: 3 months at 40°C in power-off state by assuming that the SSD reaches the maximum rated endurance.
Never saw something different. probably this is a point, why the pro/consumer SSD’s have less endurance. They have to retain the data much longer. I am not even sure if there is a real binning of NAND dies for enterprise SSD’s.