Chris,
Please ship a single Dell -Western DigitalWD5003ABYX-18WERA0 500GB 3.5" SATA HDD from your shelf spares to ULSFO. I'll install it into bast4001, which was purchased as a single disk system (4 cabled hdd bays).
Once this has been shipped, feel free to strip off the ops-eqiad, add ops-ulsfo, and assign to me.
Thanks!