HP BL680c XenServer Administrator's Guide 4.1.0 - Page 24

Storage configuration examples

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Storage which is compared to all other signatures in the data volume. If an exact block match exists, the duplicate block is discarded and the disk space reclaimed. A-SIS can be enabled on "thin provisioned" Netapp-based SRs and will operate according to the default filer A-SIS parameters, typically every 24 hours. It must be enabled at the point the SR is created and any custom A-SIS configuration managed directly on the filer. Access Control Since FlexVol operations such as volume creation and volume snapshotting require administrator privileges on the filer itself, it is recommended that the XenServer Host should be provided with suitable administrator username and password credentials at configuration time. In situations where the XenServer Host does not have full administrator rights to the filer, the filer administrator could perform an out-of-band preparation and provisioning of the filer. The SR is then introduced to the XenServer Host using the XenCenter or via the sr-introduce xe CLI command. Note however that operations such as VM cloning or snapshot generation will fail in this situation due to insufficient access priviledges. Licenses You need to have CIFS, NFS, FCP and iSCSI licenses on the NetApp filer. Further information For more information about NetApp technology, see the following links: • General information on NetApp products • Data ONTAP • FlexVol • FlexClone • RAID-DP • Snapshot • FilerView 3.3. Storage configuration examples This section covers creating storage repository types and making them available to a XenServer Host. The examples provided pertain to storage configuration via the CLI, which provides the greatest flexibility. See the XenCenter Help for details on using the New Storage Repository wizard. 3.3.1. Creating Storage Repositories This section covers creating Storage Repositories (SRs) of different types and making them available to a XenServer Host. The examples provided cover creating Storage Repositories (SRs) via the xe CLI. See the XenCenter Help for details on using the New Storage Repository wizard to add SRs via XenCenter. Note Local SRs of type lvm and ext and HBA-based FC and iSCSI SRs of type lvmohba can only be created with the CLI. After creation all SR types can be managed by either XenCenter or the CLI. 18

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Storage
18
which is compared to all other signatures in the data volume. If an exact block match exists, the duplicate
block is discarded and the disk space reclaimed. A-SIS can be enabled on "thin provisioned" Netapp-based
SRs and will operate according to the default filer A-SIS parameters, typically every 24 hours. It must be
enabled at the point the SR is created and any custom A-SIS configuration managed directly on the filer.
Access Control
Since FlexVol operations such as volume creation and volume snapshotting require administrator privileges
on the filer itself, it is recommended that the XenServer Host should be provided with suitable administrator
username and password credentials at configuration time. In situations where the XenServer Host does not
have full administrator rights to the filer, the filer administrator could perform an out-of-band preparation and
provisioning of the filer. The SR is then introduced to the XenServer Host using the XenCenter or via the
sr-introduce
xe CLI command. Note however that operations such as VM cloning or snapshot generation
will fail in this situation due to insufficient access priviledges.
Licenses
You need to have CIFS, NFS, FCP and iSCSI licenses on the NetApp filer.
Further information
For more information about NetApp technology, see the following links:
•
General information on NetApp products
•
Data ONTAP
•
FlexVol
•
FlexClone
•
RAID-DP
•
Snapshot
•
FilerView
3.3. Storage configuration examples
This section covers creating storage repository types and making them available to a XenServer Host. The
examples provided pertain to storage configuration via the CLI, which provides the greatest flexibility. See
the XenCenter Help for details on using the New Storage Repository wizard.
3.3.1. Creating Storage Repositories
This section covers creating Storage Repositories (SRs) of different types and making them available to a
XenServer Host. The examples provided cover creating Storage Repositories (SRs) via the xe CLI. See the
XenCenter Help for details on using the New Storage Repository wizard to add SRs via XenCenter.
Note
Local SRs of type lvm and ext and HBA-based FC and iSCSI SRs of type lvmohba can only be
created with the CLI. After creation all SR types can be managed by either XenCenter or the CLI.