Although the fans make a good amount of noise they are clean and this is typical with large servers. For a NAS complete with 48TB of drives this is cheap, very cheap! Storage Capacity: 48TB, utilizing12 x 4TB 6Gb SAS drives.
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The product is a total of 22 x IBM 600GB 10K 6GB SAS drives with Dell Equalogic Caddies. These drives have a 2.5-inch form factor, SAS interface, and are compatible with Dell NAS storage products (taken from working Dell Compellent SC220. With a storage capacity of 600GB and a transfer rate of 6GB, these HDDs are ideal for high-performance storage systems. Manufactured in Thailand, these drives are part of the System Storage product line and have a rotation speed of 10000 RPM, ensuring fast data access and retrieval, tested , working no bad sectors there is also 2 spare caddies...
eBay