3Ware 9550SXU-12 User Guide - Page 105
To use auto-carving, Management >, Controller Settings, Settings > Controller Policies
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Using Auto-Carving for Multi LUN Support 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 1 TB to 32 TB (1024 GB to 32768 GB). 3ware firmware supports a maximum of 32 volumes per controller, up to a total of 32TB. 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. If you are migrating a unit to a size that is larger than the carve size and autocarving is on, multiple volumes will be created. 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. 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. www.3ware.com 93