Thanks for your responses Jens, Mark, Kris & Antonio Definitely was using different user login on both systems - desktop (my personal login) and server (admin login). Yes, I have checked to make sure Disk1 is not the OS disk. Fyi - I have 5 tests hard disk drive (HDD) connected to the server (Disk0, 1, 2, 4, 5) and Disk3 is the OS disk. All the connected disk were showing "Online" status on the server; and prior to running FIO - they ran with IOMeter without any problem (random write for 48 hours). On the desktop with Windows7 that worked - the test disk was Disk0 (while Disk1 is OS). Thanks, TK -----Original Message----- From: Beierl, Mark [mailto:Mark.Beierl@xxxxxxxx] Sent: Monday, February 25, 2019 1:54 PM To: neto from Brazil <Antonio.Jose.Rodrigues.Neto@xxxxxxxxxx>; TK Tan Tan Tuan Keat <Tan.Tuan.Keat@xxxxxxx> Cc: fio@xxxxxxxxxxxxxxx Subject: Re: Looking for assistance on FIO On 2019-02-25, 13:51, "fio-owner@xxxxxxxxxxxxxxx on behalf of neto from Brazil" <fio-owner@xxxxxxxxxxxxxxx on behalf of Antonio.Jose.Rodrigues.Neto@xxxxxxxxxx> wrote: > fio: io_u error on file \\.\PhysicalDrive1: Permission denied: write offset=504457322496, buflen=4096 I think that is the critical message: Permission denied. So, there might be a difference from one version of Windows to another, or perhaps you are using a different user? Also, is PhysicalDrive1 the same location on both servers (ie: PhysicalDisk1 is available for writing, and not part of a volume span, or hosting the OS, etc?) Regards, Mark
