Western Digital GreenPower sleep mode?

Does openSUSE support a sleep mode for Western Digital GreenPower drives?

This is what hwinfo --disk shows regarding my drives:

:> /usr/sbin/hwinfo --disk
29: IDE 00.0: 10600 Disk                                        
  [Created at block.243]
  UDI: /org/freedesktop/Hal/devices/storage_serial_WDC_WD10EADS_65M2B1_WD_WCAV58449449
  Unique ID: 3OOL.h9Hzzn_3856
  Parent ID: WL76.kOhwAjjQ0n2
  SysFS ID: /class/block/sda
  SysFS BusID: 0:0:0:0
  SysFS Device Link: /devices/pci0000:00/0000:00:09.0/host0/target0:0:0/0:0:0:0
  Hardware Class: disk
  Model: "WDC WD10EADS-65M"
  Vendor: "WDC"
  Device: "WD10EADS-65M"
  Revision: "01.0"
  Driver: "ahci", "sd"
  Driver Modules: "ahci"
  Device File: /dev/sda
  Device Files: /dev/sda, /dev/block/8:0, /dev/disk/by-id/ata-WDC_WD10EADS-65M2B1_WD-WCAV58449449, /dev/disk/by-id/scsi-SATA_WDC_WD10EADS-65_WD-WCAV58449449, /dev/disk/by-path/pci-0000:00:09.0-scsi-0:0:0:0, /dev/disk/by-id/edd-int13_dev80
  Device Number: block 8:0-8:15
  Drive status: no medium
  Config Status: cfg=no, avail=yes, need=no, active=unknown
  Attached to: #14 (SATA controller)

30: IDE 200.0: 10600 Disk
  [Created at block.243]
  UDI: /org/freedesktop/Hal/devices/storage_serial_WDC_WD5000AADS_00S9B0_WD_WCAV93800106
  Unique ID: WZeP.hKe6UXslRI6
  Parent ID: WL76.kOhwAjjQ0n2
  SysFS ID: /class/block/sdb
  SysFS BusID: 2:0:0:0
  SysFS Device Link: /devices/pci0000:00/0000:00:09.0/host2/target2:0:0/2:0:0:0
  Hardware Class: disk
  Model: "WDC WD5000AADS-0"
  Vendor: "WDC"
  Device: "WD5000AADS-0"
  Revision: "01.0"
  Driver: "ahci", "sd"
  Driver Modules: "ahci"
  Device File: /dev/sdb
  Device Files: /dev/sdb, /dev/block/8:16, /dev/disk/by-id/ata-WDC_WD5000AADS-00S9B0_WD-WCAV93800106, /dev/disk/by-id/scsi-SATA_WDC_WD5000AADS-_WD-WCAV93800106, /dev/disk/by-path/pci-0000:00:09.0-scsi-2:0:0:0, /dev/disk/by-id/edd-int13_dev81
  Device Number: block 8:16-8:31
  Drive status: no medium
  Config Status: cfg=no, avail=yes, need=no, active=unknown
  Attached to: #14 (SATA controller)