1dda(7D) Devices dda(7D)
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6 dda - MMS disk archiving driver
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9 /devices/pseudo/dda@lun:bn
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13 The Media Management System (MMS) is a distributed removable media man‐
14 agement system based on the IEEE 1244 Media Management System specifi‐
15 cation. MMS provides a uniform and consistent tape interface to client
16 applications.
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19 The dda driver is a pseudo tape drive with filesystem file media. The
20 dda driver is a minimal emulation of the st(7D) tape driver mtio(7I)
21 interface with BSD no-rewind behavior and is used for MMS disk archiv‐
22 ing. The dda driver should be used with a MMS MMP mount command handle.
23 You configure DDA tapes, drives, and libraries for disk archiving using
24 the mmsadm(1M) command. You also use mmsadm(1M) to mount and unmount
25 dda media.
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28 To set the number of disk archiving tape drives available for MMS disk
29 archiving, edit the /kernel/drv/dda.conf configuration file. The
30 default number of disk archiving tape drives is 20.
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33 The disk archiving tape drive devlinks are located in the /dev/dda
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37 The DDA maximum block size is 262144 bytes and the minimum is 1 byte.
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40 /kernel/drv/dda 32-bit kernel module (x86)
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43 /kernel/drv/sparcv9/dda 64-bit kernel module (SPARC)
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46 /kernel/drv/amd64/dda 64-bit kernel module (x86)
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49 /kernel/drv/dda.conf dda configuration file
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53 See attributes(5) for a description of the following attributes:
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58 ┌────────────────────┬─────────────────────────────────────────────────────────┐
59 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
60 ├────────────────────┼─────────────────────────────────────────────────────────┤
61 │Architecture │ SPARC, x86 │
62 ├────────────────────┼─────────────────────────────────────────────────────────┤
63 │Availability │ SUNWmmsr │
64 ├────────────────────┼─────────────────────────────────────────────────────────┤
65 │Interface Stability │ Uncommitted │
66 └────────────────────┴─────────────────────────────────────────────────────────┘
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69 mt(1), mmsadm(1M), attributes(5), dmd(7D), st(7D), mtio(7I)
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72 IEEE 1244 Removable Media Standards Specification — IEEE, 2000
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76SunOS 5.11 17 Oct 2008 dda(7D)