Dell DR4300 DR Series System Administrator Guide - Page 143

Guidelines for Configuring VTL, Dell DR Series CLI Reference Guide, Dell DR Series

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NOTE: For more information about using the CLI, see the Dell DR Series CLI Reference Guide. A library can only contain tapes of the same size. For example, if the library is originally created with 10 tapes of size 10GiB, additional tapes of size 10GiB can only be added. Tapes of the following capacity are supported: Tape Size Max number of slots supported LTO-4 800GiB 2000 LTO-4 400GiB 4000 LTO-4 200GiB 8000 LTO-4 100GiB 10000 LTO-4 50GiB 10000 LTO-4 10GiB 10000 • Maximum Number of DMAs or Initiators Supported - A tape library can be accessed by one DMA or iSCSI initiator at a time. • Replication - Replication of VTL containers is currently not supported; however, it is planned for a future release of the DR Series system. Guidelines for Configuring VTL The overall steps and recommended guidelines for using and configuring a virtual tape library (VLT) with the DR Series system are described below. Plan your Environment Determine the following before creating a container of type VTL. • Identify the Data Management Application (DMA) that you will be using to back up data. Refer to the Dell DR Series System Interoperability Guide for a complete list of the supported DMAs. • For the NDMP protocol, determine the filer that will be backed up using NDMP Refer to the Dell DR Series System Interoperability Guide for a list of the supported Filers and Operating systems. • For the iSCSI protocol, determine the iSCSI initiator's properties - This is the DMA IP, hostname or IQN of the software initiator on the operating system. • Assess the estimated size of full and incremental backups and retention periods. NOTE: The size of the full and incremental backups will determine the tape capacity size that you set. You should use a larger tape size for full backups and a smaller size for incremental backups that have smaller retention periods. Note that faster expiration periods of incremental backups residing on smaller tapes results in the release of space back to the system for future backups. Create Containers of Type VTL. • Determine the VTL library type (NDMP or iSCSI) that you should be using as per the suggested type in the best practices guide of your preferred DMA. Refer to the DR Series system documentation, which includes best practices whitepapers for the supported DMAs, for your specific DR Series system at: http://www.dell.com/powervaultmanuals • When creating the container in the GUI or by using the CLI, you will need to set the connection type of either NDMP or iSCSI. You need to provide either the DMA IP/hostname for NDMP or the IP/hostname or IQN for an iSCSI connection type. 143

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NOTE:
For more information about using the CLI, see the
Dell DR Series CLI Reference Guide
.
A library can only contain tapes of the same size. For example, if the library is originally created with 10 tapes of size
10GiB, additional tapes of size 10GiB can only be added.
Tapes of the following capacity are supported:
Tape
Size
Max number of slots supported
LTO-4
800GiB
2000
LTO-4
400GiB
4000
LTO-4
200GiB
8000
LTO-4
100GiB
10000
LTO-4
50GiB
10000
LTO-4
10GiB
10000
•
Maximum Number of DMAs or Initiators Supported —
A tape library can be accessed by one DMA or iSCSI initiator
at a time.
•
Replication
— Replication of VTL containers is currently not supported; however, it is planned for a future release of
the DR Series system.
Guidelines for Configuring VTL
The overall steps and recommended guidelines for using and configuring a virtual tape library (VLT) with the DR Series
system are described below.
Plan your Environment
Determine the following before creating a container of type VTL.
•
Identify the Data Management Application (DMA) that you will be using to back up data. Refer to the
Dell DR Series
System Interoperability Guide
for a complete list of the supported DMAs.
•
For the NDMP protocol, determine the filer that will be backed up using NDMP Refer to the
Dell DR Series System
Interoperability Guide
for a list of the supported Filers and Operating systems.
•
For the iSCSI protocol, determine the iSCSI initiator’s properties – This is the DMA IP, hostname or IQN of the
software initiator on the operating system.
•
Assess the estimated size of full and incremental backups and retention periods.
NOTE:
The size of the full and incremental backups will determine the tape capacity size that you set. You
should use a larger tape size for full backups and a smaller size for incremental backups that have smaller
retention periods. Note that faster expiration periods of incremental backups residing on smaller tapes results
in the release of space back to the system for future backups.
Create Containers of Type VTL
.
•
Determine the VTL library type (NDMP or iSCSI) that you should be using as per the suggested type in the best
practices guide of your preferred DMA.
Refer to the DR Series system documentation, which includes best practices whitepapers for the supported DMAs,
for your specific DR Series system at:
•
When creating the container in the GUI or by using the CLI, you will need to set the connection type of either NDMP
or iSCSI. You need to provide either the DMA IP/hostname for NDMP or the IP/hostname or IQN for an iSCSI
connection type.
143