The brave new world of 4Kn hard disks: A test with Windows (XP x64), Truecrypt, HDTune and others (Update: Now with Linux, XP 32-Bit) – The GAT at XIN.at
HGST 1.2TB 4Kn SAS 12Gb/s 2.5" HDD in HPE SC for Gen9 Gen10 ProLiant DL380 DL360 | eBay
0F27439 HUH721010AL4200 - Certified Dell 4Kn 10TB 7.2K RPM 12Gbps 3.5 Inch SAS hard drive
Seagate Enterprise Capacity 3.5'' HDD 2TB 7200 RPM 4Kn SAS 12Gb/s 128MB Cache Internal Hard Drive ST2000NM0115 - Newegg.com
Seagate 8TB NAS SATA 6Gb s 4Kn Enterprise Hard Drive (ST8000NM0045)