Tandem – This selection allows the administrator to specify multiple drive groups
during the creation of a volume to work together. The resulting volume may require
additional software to be used when creating ATTO Power Center External Tandem
volumes in a multi-server workgroup. This will apply with a fully populated 24D or an
attached TX16 expansion chassis. For additional information on the Tandem feature
see Appendix B: Working with External Tandem Volumes.
Facilis recommends creating Tandem volumes for TerraBlock 24D
systems. This will ensure the server operates with optimal
performance. Tandem is optional for multi-server configurations.
DynaRAID – This section allows the administrator to choose a protection level for
the virtual volume: Mirror, RAID5, RAID50, RAID51 or Unprotected.
When selecting a Single drive group or utilizing the Tandem feature, different raid
options are available.
The Mirror option is for use creating Single group volumes with single
server configurations.
The RAID5 option is for use with single server configurations.
The Unprotected option is intended for use on a single server creating
single group volumes.
The RAID50 and RAID51 options are intended for use with External
Tandem volumes in a multi-server environment or with Facilis TX16
Expansion Chassis. See TerraBlock Manager Columns – DynaRAID for
more information.
Give Everyone Write Access – If checked at volume creation this option adds the
volume to the “Everyone” user group with write access.
Mount Type - This option allows the user to create either a Single-user or Multi-user
Write Volume. When selecting Single-user Write on Windows and Macintosh clients,
the Auto Format option is available (see Auto Format Volume, below).
When selecting Multi-user Write, the Auto Format option is not available. Multi-user
Write volumes are created and automatically formatted as NTFS on the TerraBlock
Server. They are then automatically set to Multi-user volumes after the server
format is complete.
Multi-user Write volumes are formatted as NTFS when created. If
these volumes are switched to Single-user Write, they will be
mountable only as Read-only volumes on Mac clients. If your
workflow requires mounting Single-user Writable volumes on a Mac
client, create the volume as Single-user Write and choose Auto
Format from a Mac client in order to create the drives with HFS+
formatting.
In order to mount Multi-user Write volumes that are formatted as
HFS+, additional 3
rd
party software, MacDrive 8 (or higher), must be
installed on the TerraBlock Server (see Change Volume, below).
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