I have been trying to prevent my 2 external seagate drives from spinning down into STANDBY mode. When I use sdctl -c STANDBY /dev/sdb I get /dev/sdb: ATA ST3500341AS CC1H Change mode page: failed fetching page: Power condition I get the same error for my smaller 500GB ST3500641AS. So, now that sdctl cannot disable standby mode in these drives, how safe is it to resort to using hdparm, the man page of which is full of warning with regards to disabling the standby mode. To wit: -s Enable/disable the power-on in standby feature, if supported by the drive. VERY DANGEROUS. Do not use unless you are absolutely certain that both the system BIOS (or firmware) and the operating system kernel (Linux >= 2.6.22) support probing for drives that use this feature. When enabled, the drive is powered-up in the standby mode to allow the controller to sequence the spin-up of devices, reducing the instantaneous current draw burden when many drives share a power supply. Primarily for use in large RAID setups. This feature is usually disabled and the drive is powered-up in the active mode (see -C above). Note that a drive may also allow enabling this feature by a jumper. Some SATA drives support the control of this feature by pin 11 of the SATA power connector. In these cases, this command may be unsupported or may have no effect. Would like some input from those who have actually used hdparm to disable the standby mode. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
