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Using Auto-Carving for Multi LUN Support

www.3ware.com 93

Each volume can be treated as an individual disk with its own file system. The

default carve size is 2 TB; you can change this to a setting in the range of

1TB to 32 TB (1024 GB to 32768 GB). 3ware firmware supports a maximum

of 32 volumes per controller, up to a total of 32TB.

If you are migrating a unit to a size that is larger than the carve size and auto-

carving is on, multiple volumes will be created.

You must turn on the Auto-Carving policy before creating the unit. Units

created with this policy turned off will not be affected by a change to the

policy. If the policy is turned off later, units that have been carved into

volumes will retain their individual volumes; existing data is not affected.

To use auto-carving

1 Enable the auto-carving feature. You can do so using 3DM or 3BM.

In 3DM, enable Auto-Carving at the bottom of the

Management >

Controller Settings

page.

In 3BM, you enable Auto-Carving on the

Settings > Controller Policies

page.

Note: CLI now provides the ability to specify variable sizes for the first 4 volumes of

a unit when autocarving. This is done while creating a unit with the /cx add type

command attribute [v0=n|vol=a:b:c:d]. See the 3ware SAS/SATA RAID

Controller CLI Guide.

Note: Carving a unit into multiple volumes can have an impact on performance.

Note: Operating systems without the 2TB limitation include Linux 2.6, FreeBSD 5.x

or later, Windows XP (64bit), Windows 2003 (32-bit and 64-bit with SP1 or newer),

Windows 2008 (32-bit and 64-bit) and Windows Vista.

Even though the Linux 2.6 kernel supports partitions larger than 2 TB, the installers

for SuSE and Redhat do not. Turn auto-carving on to prevent the installation from

failing.

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AMCC 3ware 9650SE-2LP Guía de usuario Pagina 105