Corrected Silo description to match Attic

content/facilities.md

@@ -55,8 +55,8 @@ These resources are detailed further below.
 
 ## 1.2 Silo (backup mirror for Attic)
 
-* 1 Mercury RM216 2U Rackmount Server 2 Xeon E5-2630 (12-core, 2.6GHz)
-* 10 Mercury RM445J 4U Rackmount JBOD with 45x 4TB NL SAS Hard Disks
+* 1 2-socket AMD EPYC 7282 (16-core, 2.8GHz) Head
+* 7 Western Digital Ultrastar Data60 JBOD with 60x 18TB NL SAS HDD
 
 # 2. HCC at PKI Resources