Product specifications

Terminal Operation
4-51
4...............................................................................................................................................1
Terminal Operation.................................................................................. 1
4.1 Power on RAID Enclosure ................................................................................................ 1
4.2 Caching Parameters ........................................................................................................... 2
4.2.1 Optimization Modes .........................................................................................................2
4.2.2 Optimization Mode and Stripe Size.................................................................................. 3
4.2.3 Optimization for Random or Sequential I/Os ...................................................................3
4.2.4 Write-Back Cache Enable/Disable ................................................................................... 4
4.2.5 Periodic Cache Flush ........................................................................................................5
4.3 Viewing the Connected Drives..........................................................................................6
4.4 Creating a Logical Drive ...................................................................................................7
4.4.1 Choosing a RAID Level ...................................................................................................7
4.4.2 Choosing Member Drives.................................................................................................8
4.4.3 Logical Drive Preferences ................................................................................................ 8
4.4.3.1 Maximum Drive Capacity ............................................................................................. 8
4.4.3.2 Assign Spare Drives ...................................................................................................... 9
4.4.3.3 Disk Reserved Space .....................................................................................................9
4.4.3.4 Write Policy................................................................................................................... 9
4.4.3.5 Initialization Mode ........................................................................................................9
4.4.3.6 Stripe Size.................................................................................................................... 10
4.5 RAID Migration ..............................................................................................................11
4.5.1 Requirements for Migrating a RAID5 Array........................................................... 12
4.5.2 Migration Methods .................................................................................................. 12
4.5.3 Migration: Exemplary Procedure.............................................................................14
4.6 Creating a Logical Volume.............................................................................................. 17
4.7 Partitioning a Logical Drive/Logical Volume ................................................................. 19
4.8 Mapping a Logical Volume to Host LUNs......................................................................20
4.9 Assigning a Spare Drive and Rebuild Settings................................................................ 22
4.9.1 Adding Local Spare Drive.............................................................................................. 22
4.9.2 Adding a Global Spare Drive .........................................................................................23
4.10 Viewing and Editing Logical Drives and Drive Members ..............................................24
4.10.1 Deleting a Logical Drive ..............................................................................................25
4.10.2 Deleting a Partition of a Logical Drive......................................................................... 25
4.10.3 Assigning a Name to a Logical Drive...........................................................................26
4.10.4 Rebuilding a Logical Drive ..........................................................................................26
4.10.5 Expand Logical Drive...................................................................................................27
4.10.6 Migrate Logical Drive .................................................................................................. 27
4.10.7 Add Drive .....................................................................................................................28
4.10.8 Regenerating Logical Drive Parity ...............................................................................29
(Applies to RAID Levels 1, 3, 5, and 6).................................................................................. 29
4.10.9 Media Scan ...................................................................................................................29
4.10.10 Write Policy................................................................................................................ 30
4.11 Viewing and Editing Host LUNs.....................................................................................31
4.11.1 Viewing or Deleting LUN Mappings ........................................................................... 31
4.12 Viewing and Editing Drives ............................................................................................ 31
4.12.1 Deleting Spare Drive (Global / Local Spare Drive) .....................................................32
4.12.2 Disk Reserved Space ....................................................................................................33