Dell PowerVault 700N Dell PowerVault NAS Solution iSCSI Deployment Guide - Page 28

Before Creating Snapshots, iSCSI Software Target, you require the Microsoft iSCSI Software Target VSS

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Snapshots that are created on the iSCSI Target server are crash consistent. iSCSI snapshots are created using VSS and a storage array with a hardware provider designed for use with VSS. To enable consistent snapshots in Microsoft iSCSI Software Target, you require the Microsoft iSCSI Software Target VSS Hardware Provider. The Microsoft iSCSI Software Target VSS Hardware Provider is available as an installation option in iSCSI Software Target. The hardware provider coordinates with the local VSS to create a consistent image of the volume that can be transported to a central backup server. In a PowerVault storage system, you can create an iSCSI snapshot in two ways: • Manually create a snapshot of a single virtual disk in the Microsoft iSCSI Software Target console. • Use the Schedule Snapshot Wizard to set up a schedule for creating a single snapshot or recurring snapshots automatically. Before Creating Snapshots Before creating snapshots for virtual disks, perform the following steps: NOTE: Use Windows Explorer and go to the volume that contains the virtual disks that you are creating snapshots for. 1 Go to Volume→ Properties→ Shadow Copies→ Settings. Ensure that the Located on this volume option in the Storage Area tab displays the same drive letter as that of the volume. 2 Click Details to verify the volume usage. The default settings are as follows: - Maximum size - Use limit-size in MB or No Limit Change the size according to virtual disk/snapshot size or change the settings to No Limit. CAUTION: Ensure that you have enough space in the volume to hold virtual disk snapshots. If there is not enough space, the snapshots are lost. 28 Target Details

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Target Details
Snapshots that are created on the iSCSI Target server are crash consistent.
iSCSI snapshots are created using VSS and a storage array with a hardware
provider designed for use with VSS. To enable consistent snapshots in Microsoft
iSCSI Software Target, you require the Microsoft iSCSI Software Target VSS
Hardware Provider. The Microsoft iSCSI Software Target VSS Hardware
Provider is available as an installation option in iSCSI Software Target. The
hardware provider coordinates with the local VSS to create a consistent image of
the volume that can be transported to a central backup server.
In a PowerVault storage system, you can create an iSCSI snapshot in two
ways:
•
Manually create a snapshot of a single virtual disk in the Microsoft iSCSI
Software Target console.
•
Use the
Schedule Snapshot Wizard
to set up a schedule for creating a
single snapshot or recurring snapshots automatically.
Before Creating Snapshots
Before creating snapshots for virtual disks, perform the following steps:
NOTE:
Use Windows Explorer and go to the volume that contains the virtual disks
that you are creating snapshots for.
1
Go to
Volume
→
Properties
→
Shadow Copies
→
Settings
. Ensure that the
Located on this volume
option in the
Storage Area
tab displays the same
drive letter as that of the volume.
2
Click
Details
to verify the volume usage. The default settings are as
follows:
–
Maximum size
–
Use limit
—size in MB or
No Limit
Change the size according to virtual disk/snapshot size or change the
settings to
No Limit
.
CAUTION:
Ensure that you have enough space in the volume to hold virtual disk
snapshots. If there is not enough space, the snapshots are lost.