450GB 15K drives are no longer being manufactured, and we are unable to source new drives.
We have qualified certain 10K 2.5 inch drives as viable replacements. We are in effect "short stroking" the drives - rotational latency and seek time for 2.5 inch 10K drives is comparible to 15K 3.5 inch drives, so there should not be an appreciable performance difference.
Yeah, the issue is not what you describe. The issue is you are sending 10K drives while the invoice states we received a 15K drive. Why not correct your invoices to reflect the actual product being received by the customer?