Dell PowerVault TL2000 Reference Manual

Also see for PowerVault TL2000: Getting started guide User guide Faq Quick start guide User guide

Contents

Immediately after the user command is finished the media changer switches to on-line mode. Note themedia changer is continuous off-line when it is configured into Sequential Mode.The concept of control modes is introduced to explain the owner of the media changer. If the mediachanger is on-line then the SCSI bus has control of the loader. When the media changer is in OCP Controlmode the OCP has control of the media changer. Described below are the possible control modes of thelibrary:v SCSI Control mode (on-line) , in which the media changer is controlled by a SCSI driver issuingcommands to move cartridges between the existing elements. This is the default control mode.v Sequential mode (off-line), in which the media changer is controlled by the media changers internalfirmware. In this mode the media changer will automatically replace an ejected cartridge from the tapedrive with another one from the media changers inventory. The media changer can be configured intoSequential mode by means of the OCP menu or RMU browser.v OCP / RMU / Console Control mode (off-line) , in which the media changer is controlled by a user.These control modes allow the user to send media access commands like move cartridges betweenexisting elements.The media changer will return Not Ready status on media access SCSI command when the mediachanger is off-line. The media changer will accept media access SCSI commands when the mediachanger is on-line.About the Not Ready ConditionThe media changer reports Not Ready when it is unable to accept medium access commands. During theNot Ready reason the media changer will perform all non-media access commands as specified.The media changer is Not Ready when:v Its initialization routine is in progressv It is in sequential modev It is off-linev A magazine is removedNot Ready reason Sense code during Sense info after Not Ready reason finishedInitializing 02/04/01 06/28/00Magazine removed 02/3B/12 02/04/01 (see note 1)Sequential Mode 02/04/8E 06/28/00Off-line 02/04/12 06/28/00Note: When a magazine is inserted the media changer will automatically re-initialize. During this processthe media changer shall return 02/04/01 status. When initializing is finished the media changer shallreturn a unit attention 06/28/00 before returning Ready status.The following non-media access commands are allowed during the Not Ready reason:Allowed commands during not ready stateINQUIRYLOG SENSEMODE SENSE (6)MODE SENSE (10)PERSISTENT RESERVE IN2-2 TL2000 and TL4000 SCSI Reference