Seagate ST336705LW/LC, ST318405LW/LC, ST39205LW/LC manual Cheetah 36XL Product Manual, Rev. E

Cheetah 36XL Product Manual, Rev. E 13

The base cache buffer configuration for desktop or server environments needs to be set correctly by the host system. This involves setting the PM bit in Mode Page 0, Byte 2, as well as the number of cache buffer seg- ments in Mode Page 8, Byte 13. The firmware default values are set to desktop mode (PM bit = 1), and the number of cache buffer segments set to 16 (10h). The OEM saved values for drives with LW interface is the same as the firmware default values. For drives with the LC interface, the OEM saved values are changed to server mode (PM bit=0), and the number of cache buffer segments are set to 3 (03h). Refer to Tables 9a through 9f in Section 9.3.2 for drive default values for the PM bit in Mode Page 0, Byte 2 and the number of cache buffer segments in Mode Page 8, Byte 13.

	Caching Parameters page (08h)		Unit Attention Parameters page (00h)
	Byte 13 (Number of Cache Segments)		Byte 2, Bit 7 (PM bit)
Desktop mode	10h	(16 segments -- default for LW models)	1
Server mode	03h	(3 segments -- default for LC models)	0