Dell PowerVault ML6000 Manual do Utilizador

www.dell.com | support.dell.comSCSI Reference Guide Dell™ PowerVault™ ML6000

x Tables

PowerVault ML6000 SCSI Reference Guide 1SCSI Command SupportDevice ModelThe Dell™ PowerVault™ ML6000 tape library supports both a Media Changer device

2 SCSI Command SupportController Device Commands and ParametersThe following table lists the commands supported by the Controller device.The following

PowerVault ML6000 SCSI Reference Guide 3Media Changer Commands and ParametersThe following table lists the commands supported by the Media Changer dev

4 SCSI Command SupportThe following table lists the parameters supported by the Media Changer device. The Media Changer does not support any diagnosti

PowerVault ML6000 SCSI Reference Guide 5General Command Support BehaviorMultiple Initiator SupportMultiple initiators are not supported on the SCSI in

6 SCSI Command SupportFor a complete list of all possible sense data and their causes, refer to Request Sense – 03h on page 70. This status informatio

PowerVault ML6000 SCSI Reference Guide 7Reserved FieldsReserved fields are not checked, and no error will be sent if they contain non-zero values.Onli

8 SCSI Command SupportFibre Channel Interface SupportThe library Fibre Channel ports can be N_Ports for point-to-point topologies or NL_Ports for arbi

PowerVault ML6000 SCSI Reference Guide 9Logical LibrariesThe underlying physical library is not exposed externally to applications. Rather, logical re

Information in this document is subject to change without notice.© 2005 - 2010 Dell Inc. All rights reserved.Trademarks used in this text: Dell, the D

10 SCSI Command SupportElement status for the Data Transfer element being cleaned will not reflect the presence of the cleaning cartridge. It will con

PowerVault ML6000 SCSI Reference Guide 11SCSI CommandsInitialize Element Status - 07hWhat the Library Does With This CommandThe library will determine

12 SCSI CommandsInitialize Element Status CDB FormatThe INITIALIZE ELEMENT STATUS CDB format is shown in the following table.No Barcode Labels (NBL) –

PowerVault ML6000 SCSI Reference Guide 13Initialize Element Status With Range - E7hWhat the Library Does With This CommandThe library will examine the

14 SCSI CommandsNumber of Elements - This field specifies the number of elements to check. Gaps in element types and addresses are automatically handl

PowerVault ML6000 SCSI Reference Guide 15Inquiry - 12hWhat the Library Does With This CommandIn response to this command the library returns static da

16 SCSI CommandsStandard Inquiry ResponsePeripheral Qualifier – A return value of 000b indicates that the library supports the peripheral device type

PowerVault ML6000 SCSI Reference Guide 17Additional Length – For the Media Changer logical units, this field returns 33h, indicating 51 additional byt

18 SCSI CommandsSupported Vital Product Data Page (00h)Peripheral Qualifier - The return value 000b indicates that the library supports the peripheral

PowerVault ML6000 SCSI Reference Guide 19Unit Serial Number Page (80h)Peripheral Qualifier – The return value 000b indicates that the library supports

PowerVault ML6000 SCSI Reference Guide iiiContents1 SCSI Command Support 1Device Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20 SCSI CommandsDevice Identification Page (83h)Peripheral Qualifier – The return value 000b indicates that the library supports the peripheral device

PowerVault ML6000 SCSI Reference Guide 21Association – This field returns the following values:• 0h – the Identifier field is associated with the addr

22 SCSI CommandsThe first two descriptors describe the Node and Port. Table 16 Controller Node Identification DescriptorBitByte765432100 Reserved Code

PowerVault ML6000 SCSI Reference Guide 23The eight-byte Node and Port Worldwide Names have the following format:Table 18 Node and Port Worldwide Names

24 SCSI CommandsLog Sense - 4DhWhat the Library Does with This CommandThe library returns information for the requested log page. The only supported l

PowerVault ML6000 SCSI Reference Guide 25Page Code – The Page Code field identifies which log page is being requested by the initiator. Parameter Poin

26 SCSI CommandsLog Parameters – These are dependent upon the log page. The various parameters as well as their format for the supported pages are lis

PowerVault ML6000 SCSI Reference Guide 27Supported Log Page (00h)This page returns a list of all log pages supported by the library. Page Code – The r

28 SCSI CommandsThe supported Tape Alert flags are:Flag 1: Drive Communication Failure (C) - This flag is set to indicate a drive communication failur

PowerVault ML6000 SCSI Reference Guide 29Mode Select (6) - 15hWhat the Library Does With This CommandThe library does not support any changeable param

iv ContentsLog Sense - 4Dh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30 SCSI CommandsMode Parameter Header Following the MODE SELECT CDB, a single Mode Parameter Header should be sent as shown in the following table. Fo

PowerVault ML6000 SCSI Reference Guide 31Mode Select (10) - 55hWhat the Library Does With This CommandThe library does not support any changeable para

32 SCSI CommandsMode Parameter HeaderFollowing the MODE SELECT CDB, a single Mode Parameter Header should be sent as shown in the following table. For

PowerVault ML6000 SCSI Reference Guide 33Mode Sense (6) - 1AhWhat the Library Does With This CommandThe library will return the current settings for t

34 SCSI CommandsPage Control (PC) - This field indicates the type of mode page parameter values to return as shown in the following tablePage Code - T

PowerVault ML6000 SCSI Reference Guide 35Mode Sense (10) - 5AhWhat the Library Does With This CommandThe library will return the current settings for

36 SCSI CommandsPage Control (PC) - This field indicates the type of mode page parameter values to return as shown in the following table.Page Code -

PowerVault ML6000 SCSI Reference Guide 37Mode PagesThe following table lists the mode pages supported by the library.Table 36 Supported Mode PagesPage

38 SCSI CommandsDisconnect-Reconnect Page (02h)The Disconnect-Reconnect mode page is only supported by the Controller logical unit, and describes the

PowerVault ML6000 SCSI Reference Guide 39Connect Time Limit – This field indicates the maximum duration of an interconnect tenancy. A value of 0 is re

PowerVault ML6000 SCSI Reference Guide vRead Buffer – 3Ch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40 SCSI CommandsFibre Channel Port Control Page (19h)The Fibre Channel Port Control mode page reports port behavior for the Fibre Channel Protocol. Th

PowerVault ML6000 SCSI Reference Guide 41address. If the hard address has not changed from the address obtained in a previous successful loop initiali

42 SCSI CommandsLog Errors (LogErr) – This field is set to 0 to indicate that logging of informational exception conditions is vendor specific (unique

PowerVault ML6000 SCSI Reference Guide 43Element Address Assignment Page (1Dh)The Element Address Assignment mode page returns the first element addre

44 SCSI CommandsFirst Storage Element Address – This field returns 1000h, which is the address of the first storage element.Number of Storage Elements

PowerVault ML6000 SCSI Reference Guide 45Device Capabilities Page (1Fh)The Device Capabilities page defines the rules governing cartridge movement wit

46 SCSI CommandsMove Medium – A5hWhat the Library Does With This CommandThe library will attempt to physically move a cartridge from the requested sou

PowerVault ML6000 SCSI Reference Guide 47Move Medium CDB Format The MOVE MEDIUM CDB format is shown in the following table.Medium Transport Element Ad

48 SCSI CommandsPersistent Reserve In – 5EhWhat the Library Does With This CommandThe library returns information about persistent reservation and res

PowerVault ML6000 SCSI Reference Guide 49Read Keys ResponseThe response for a Read Keys service action is shown the following table.Generation – This

vi Contents

50 SCSI CommandsRead Reservations ResponseThe response for a Read Reservations service action is shown in the following table.Generation – This field

PowerVault ML6000 SCSI Reference Guide 51Persistent Reserve Out – 5FhWhat the Library Does With This CommandThe library will perform service actions r

52 SCSI CommandsScope – Only logical unit scope is supported, and this field must be a 0h.Type – This field specifies the type of reservation as follo

PowerVault ML6000 SCSI Reference Guide 53Position to Element – 2BhWhat the Library Does With This CommandThe library will move the picker in front of

54 SCSI CommandsPrevent Allow Medium Removal – 1EhWhat the Library Does With This CommandThe library will prohibit movement of media to an Import/Expo

PowerVault ML6000 SCSI Reference Guide 55Read Buffer – 3ChWhat the Library Does With This CommandThe library will return a requested buffer of data. T

56 SCSI CommandsIn Echo Buffer Mode, data is transferred to the initiator from the echo buffer. The echo buffer will transfer the same data that was r

PowerVault ML6000 SCSI Reference Guide 57Therefore the value contained in the Buffer Offset field of subsequent READ BUFFER commands should be a multi

58 SCSI CommandsRead Element Status – B8hWhat the Library Does With This CommandThe library returns current status and information regarding the reque

PowerVault ML6000 SCSI Reference Guide 59Element Type Code – This field specifies the element types selected for the returned information, as shown in

PowerVault ML6000 SCSI Reference Guide viiTablesTable 1 Controller Device Supported Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

60 SCSI CommandsRead Element Status ResponseElement status data consists of an eight-byte header, followed by one or more element status pages (per el

PowerVault ML6000 SCSI Reference Guide 61Element Status PageEach element status page consists of an eight-byte header, followed by one or more element

62 SCSI CommandsPrimary Volume Tag FieldVolume tags (returned in the Primary Volume Tag field) are basically barcode labels on the media. The library

PowerVault ML6000 SCSI Reference Guide 63Additional Sense Code Qualifier – If the element is in an abnormal state, this field will be set to a value a

64 SCSI CommandsAdditional Sense Code Qualifier – If the element is in an abnormal state, this field will be set to a value as described in Table 71 o

PowerVault ML6000 SCSI Reference Guide 65Data Transfer Element DescriptorElement Address – This field contains the element address of the storage elem

66 SCSI CommandsIDValid – A value of one indicates that the SCSI Bus Address field is valid. A value of zero indicates that it is not.LUValid – This f

PowerVault ML6000 SCSI Reference Guide 67Release Element – 17hWhat the Library Does With This CommandThe library releases any outstanding reservation

68 SCSI CommandsReport LUNS – A0hWhat the Library Does With This CommandThe library will return a list of the logical units that it supports. When thi

PowerVault ML6000 SCSI Reference Guide 69Report LUNS ResponseLUN List Length – This field returns the length in bytes of the list of LUNs being return

viii TablesTable 25 Tape Alert Log Page Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Table 2

70 SCSI CommandsRequest Sense – 03hWhat the Library Does With This CommandThe library returns eighteen bytes of sense data to the requesting initiator

PowerVault ML6000 SCSI Reference Guide 71Request Sense ResponseValid – The Valid field is set to 0 if the Information field is not valid. It is set to

72 SCSI CommandsInformation – This field returns additional information for certain ASC/ASCQs where a specific device must be identified and the sense

PowerVault ML6000 SCSI Reference Guide 7304h 83h x The library is not ready due to aisle power being disabled04h 8Dh x The library is not ready becaus

74 SCSI Commands28h 01h x Insert/Eject station opened and closed29h 00h x Power-on or reset occurred29h 01h x Power on occurred29h 03h x Device reset

PowerVault ML6000 SCSI Reference Guide 7553h 00h x A drive did not load or unload a tape53h 01h x x A drive did not unload a cartridge53h 02h x Medium

76 SCSI CommandsReserve Element - 16hWhat the Library Does With This CommandThe library reserves the entire library for the initiator making the reque

PowerVault ML6000 SCSI Reference Guide 77Send Diagnostic - 1DhWhat the Library Does With This CommandIf the Self Test option is requested, the library

78 SCSI CommandsTest Unit Ready (00h)What the Library Does With This CommandThe library returns status based on its current mode and state. These are

PowerVault ML6000 SCSI Reference Guide 79Write Buffer (3Bh)What the Library Does With This CommandThe library will receive a requested buffer of data

PowerVault ML6000 SCSI Reference Guide ixTable 56 Echo Buffer Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

80 SCSI CommandsBuffer Offset – This field indicates the starting location (byte offset) within the specified buffer to write data. The initiator shou