Snapshot Tab
The Snapshot tab is used to configure snapshot relationships for use with the optional DataCore Snapshot product, which creates point-in-time copies of data. You must be licensed for Snapshot in order to use it. If you are not familiar with how Snapshot works, refer to About Snapshot.
First, you create snapshot relationships made up of available virtual volumes in the Snapshot tab. Then, using the Snapshot Utility, you can perform various Snapshot functions from a storage server. Refer to Getting Started with Snapshot and other topics in the Snapshot chapter of this guide for additional Snapshot information.
The Mapstore feature creates a folder and stores bitmap images of the current configuration. The Mapstore ensures that the bitmap images survive in the event of a computer restart. Although this feature is not required for Snapshot, we recommend it. Refer to Creating a Mapstore.
Column Information
Following are descriptions of the column information displayed in the different views of the tab, available according to the selections in the left panes. Review any referenced topics for additional information.
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Upper-right Pane Information | |
|
SDS Folder Selected | |
|
SDS |
Name of the storage server. |
|
Serial # |
World Wide Name of the storage server. |
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Channels Used |
Number of channels in use; not necessarily the number of channels created for the storage server. |
|
Mapped Storage |
Amount of storage being mapped from the storage server to application servers via virtual volumes. |
|
Storage Server Selected | |
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Virtual Volume |
Names of all virtual volumes that include a volume from the storage server. If unmapped, you can change this name by selecting Rename from the context menu. |
|
Snapshot |
Identifies the virtual volume with a relationship name or Mapstore, if applicable. |
|
Type |
Virtual volume type, this depends on the mirroring type or lack of. Type will be one of the following: Linear, Standard Mirror, AP Mirror, 3PAP Mirror, CP Mirror, or Mirror w/Traveller (Traveller-enabled virtual volume). For AP Mirror type, BOOT = Bootable option selected, or MFB = Manual Failback selected. |
|
Logical Size |
Size of the virtual volume that the application servers see when mapped. An unmapped virtual volume can be resized in the Properties dialog box. |
|
Member Volume |
Specifies whether the virtual volume is the primary or secondary member on the selected storage server for the virtual volume. |
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Primary SDS |
Name of the originating storage server. |
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# of mappings |
Number of mappings of the virtual volume. |
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Relationships |
Number of relationships or Mapstore that this virtual volume is part of. |
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Mapped To |
Name of the application server that the virtual volume is mapped to. |
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Recovery Priority |
Reflects the mirror recovery priority value set in Properties dialog box. Values are 0 to 3; 3 is the highest priority. Refer to Setting Mirror Recovery Priority. |
|
Lower-right Pane Information | |
|
Mapstore Folder Selected | |
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Virtual Volume |
Name of the virtual volume used as the Mapstore. The name can be changed in the Properties dialog box. |
|
Type |
Virtual volume type, this depends on the mirroring type or lack of. Type will be one of the following: Linear, Standard Mirror, AP Mirror, 3PAP Mirror, CP Mirror, or Mirror w/Traveller. For AP Mirror type, BOOT = Bootable option selected, or MFB = Manual Failback selected. |
|
Logical Size |
Size of the virtual volume that the application servers see when mapped. An unmapped virtual volume can be resized in the Properties dialog box. |
|
Primary SDS |
Name of the originating storage server. |
|
# of mappings |
Number of mappings of the virtual volume. |
|
Attributes |
Additional features set in the Properties dialog box, such as Write Through Mode (WTM) refer to the Write Through Mode, and Replace Volume on Failure (HS), refer to Configuring Hot Spare Replacements. |
|
Recovery Priority |
Reflects the mirror recovery priority value set in Properties dialog box. Values are 0 to 3; 3 is the highest priority. Refer to Setting Mirror Recovery Priority. |
|
Mapstore/Snapshot Sets Folder Selected | |
|
Snapshot Name |
Names of relationships for the corresponding folder or Mapstore. |
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Relationship |
Snapshot relationship number identifying a specific relationship. |
|
Primary SDS |
Name of the originating storage server. |
|
Logical Size |
Size of the virtual volume that the application servers see when mapped. An unmapped virtual volume can be resized in the Properties dialog box. |
|
Source |
Name of the virtual volume used as the source of the Snapshot relationship. |
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Destination |
Name of the virtual volume used as the destination of the Snapshot relationship. |
|
Snapshot Set Selected | |
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Virtual Volume |
Name of the virtual volume used in the Snapshot relationship. If unmapped, the name can be changed in the Properties dialog box. |
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Relationship |
Snapshot relationship number identifying a specific relationship and identified as the source (SRC) or destination ( DST) of the relationship. |
|
Type |
Virtual volume type, this depends on the mirroring type or lack of. Type will be one of the following: Linear, Standard Mirror, AP Mirror, 3PAP Mirror, CP Mirror, or Mirror w/Traveller. For AP Mirror type, BOOT = Bootable option selected, or MFB = Manual Failback selected. |
|
Logical Size |
Size of the virtual volume that the application servers see when mapped. An unmapped virtual volume can be resized in the Properties dialog box. |
|
Member Volume |
Specifies whether the virtual volume is the primary or secondary member on the selected storage server for the virtual volume. |
|
Primary SDS |
Name of the originating storage server. |
|
# of mappings |
Number of mappings of the virtual volume. |
|
Attributes |
Additional features set in the Properties dialog box, such as Write Through Mode (WTM) refer to the Write Through Mode, and Replace Volume on Failure (HS), refer to Configuring Hot Spare Replacements. |
|
Mapped To |
Name of the server that the virtual volume is mapped to. |
|
Recovery Priority |
Reflects the mirror recovery priority value set in Properties dialog box. Values are 0 to 3; 3 is the highest priority. Refer to Setting Mirror Recovery Priority. |
Context Menu Information
Following are the available context menu items and where to find them. Review any referenced topics for additional information.
|
Selection |
Pane |
Context Menu Items |
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Storage server |
upper-left |
Protect All Volumes – causes the storage server to take control of unallocated disks and unformatted partitions for use with the storage system. Release All Volumes – causes the storage server to release control of unmapped volumes, volumes marked “previously used,” or hot spares. All alias names will be lost. Mirror Paths – refer to Specifying the Mirror Path. Delete – deletes the storage server. Refer to Deleting Storage Servers from the Region. Properties – use to view all the properties of the storage server. Refer to Storage Server Properties. |
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Virtual volume |
upper-right |
Delete – use to deletes an unmapped virtual volume. (Traveller rollback virtual volumes can only be deleted from the Traveller server.) Rename – use to rename an unmapped virtual volume. Split – refer to Splitting a Mirror. Split Tertiary – refer to Splitting a Tertiary Mirror. Properties - refer to Virtual Volumes Properties. |
|
Mapstore |
lower-left |
Delete Mapstore – removes the virtual volume from the Mapstore folder. Properties – refer to Virtual Volumes Properties. |
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Snapshot relationship |
lower-left |
Delete – deletes the snapshot relationship. Properties – displays the properties of the relationship and the relationship name can be changed in this dialog box. |
|
Virtual volume |
lower-right |
Remove from Snapshot – removes the virtual volume from the relationship, disable the snapshot first. Properties – refer to Virtual Volumes Properties. |
Related Topics:
SANmanager Menu Bar