| use. However background copying processes normally continue |
| after creation. |
| See also snapshot. |
source (R1) device | (EMC Symmetrix specific term) An EMC Symmetrix device that |
| participates in SRDF operations with a target (R2) device. All |
| writes to this device are mirrored to a target (R2) device in a |
| remote EMC Symmetrix unit. An R1 device must be assigned to |
| an RDF1 group type. |
| See also target (R2) device. |
source volume | (ZDB specific term) A storage volume containing data to be |
| replicated. |
sparse file | A file that contains data with portions of empty blocks. Examples |
| are: a matrix in which some or much of the data contains zeros, |
| files from image applications, and |
| sparse file processing is not enabled during restore, it might be |
| impossible to restore this file. |
split mirror | (EMC Symmetrix and HP StorageWorks Disk Array XP specific |
| term) A replica created using split mirror techniques. Such a |
| replica provides an independent, exact duplicate, or clone of |
| the contents of the source volumes. |
| See also replica and split mirror creation. |
split mirror backup | See ZDB to tape. |
(EMC Symmetrix |
|
specific term) |
|
split mirror backup | See ZDB to tape, ZDB to disk, and ZDB to disk+tape. |
(HP StorageWorks |
|
Disk Array XP |
|
specific term) |
|
split mirror | (EMC Symmetrix and HP StorageWorks Disk Array XP specific |
creation | term) A replica creation technique, in which a |
| set of target volumes (a mirror) is kept synchronized with a set |
| of source volumes until the time at which a replica of the contents |
| of the source volumes is required. Then, the synchronization is |
| stopped (the mirror is split) and a split mirror replica of the |
| source volumes at the time of the split remains in the target |
| volumes. |
| See also split mirror. |
390Glossary