Navisphere Command Line Interface (CLI) Reference - VMware Communities

LUN Expansion (MetaLUN) Commandsmetalun -expandCreates a new metaLUN or expands the capacity of an existing oneDescriptionThe naviseccli metalun command with the -expand function createsa new metaLUN or expands the capacity of an existing one. See“Requirements and recommendations” on page 330 for metaLUNrequirements.Note: For raw device mapping volumes (RDMs), if you are running VMwareESX Server, after you create or expand the metaLUN, you must rescan thebus at the ESX Server level. You can also rescan at the virtual machine level(optional). You then must expand the file system at the virtual machine level.ESX Server and the virtual machine will now recognize the new or expandedmetaLUN.For configuration specifications, go to the E-Lab Interoperability Navigatoron EMC Powerlink.Requirements and recommendationsThis section describes the general requirements andrecommendations for both a stripe and concatenate expansion, aswell as those specific to one or the other.General expansion requirements and recommendations◆ Each LUN within a metaLUN must be either a redundant (RAID6, RAID 5, RAID 3, RAID 1, RAID 1/0) or non-redundant (RAID0, Disk) RAID type.◆◆◆All disks within metaLUN must be the same type.You can expand only the last component of a metaLUN.Expansion LUNs cannot be participating in a SnapView,MirrorView or SAN Copy session.Stripe expansion requirements and recommendationsAll LUNs within a striped metaLUN or metaLUN component mustbe the same size and RAID type, and we recommend that each LUN:◆◆◆be from a different RAID group.includes the same number of disks.has the same stripe element size.330 EMC Navisphere Command Line Interface (CLI) Reference