I'm think maybe you are referring to the 3390 mod3 HDA (head assembly), 2 units in one HDA?
http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=OC&subtype=NA&htmlfid=897/ENUS3390-A14&appname=totalstorage Carmen Vitullo ----- Original Message ----- From: "John McKown" <[email protected]> To: [email protected] Sent: Thursday, March 22, 2018 7:06:39 AM Subject: Didn't we have this some time ago on some SLED disks? Multi-actuator https://www.theregister.co.uk/2017/12/19/seagate_disk_drive_multi_actuator/ Basically splits the disk into two parts: upper & lower. Each part has the heads which reference it on separate actuators so the they can be on different cylinders. -- I have a theory that it's impossible to prove anything, but I can't prove it. Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
