Dell PowerVault TL4000 SCSI Reference Guide - Page 35
Select - media attention error
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MODE SELECT 6 (15h) The MODE SELECT (6) command provides a means for the host to specify peripheral device parameters to the media changer. Application clients should issue MODE SENSE prior to each MODE SELECT to determine supported pages, page lengths, changeable variables and to determine is the page is savable to NVRAM. Bit 7 6 5 4 3 2 1 0 Byte 0 Operation Code (15h) 1 LUN PF (1) Reserved SP 2 Reserved 3 Reserved 4 Parameter list length 5 Control Field descriptions: PF: A PF bit of one indicates that the MODE SELECT parameters following the header and block descriptor(s) complies with the SCSI-2 specification. The value must be set to 1. SP: A Save Pages (SP) bit of zero indicates the media changer shall perform the specified MODE SELECT operation, and shall not save any pages in nonvolatile ram. An SP bit of one indicates that the media changer shall perform the specified MODE SELECT operation, and shall save the current values to a nonvolatile RAM. When a host has successfully issued the MODE SELECT CDB that changed settings in one of the Mode pages, the media changer will raise a Unit Attention condition to every other host who has not issued this CDB. The sense data for these hosts will be set to: Mode Parameters Changed (06/2A/01) The host provides the parameters through a parameter list to the media changer. The parameter list consists of the following items: v Parameter List Header v Mode Select page(s) Supported Mode Select pages: Page Code Subpage Code Page Name 00h 00h Parity Retry page Page saveable in NVRAM Yes 0Ah 01h Control Extension page No 1Ch 00h 1Dh 00h 1Eh 00h Tape Alert page No Element Address Yes Assignment page Transport Geometry No page Page Description Provides means to select the maximum number retries performed on a parity error. Provides a means to read out the capabilities of the SET TIMESTAMP and REPORT TIMESTAMP commands. Provides means to select a specific way to report a Tape Alert event . Provides a means to change SCSI element address assignments and respective element ranges. Provides a means to set the specifics about the Transport Element. (not changeable). Chapter 3. Supported SCSI Commands 3-21