User's Manual

• Based on the minimum (and even) number of physical disks selection the firmware on the PERC 9
hardware controller recommends the preferred span layout.
NOTE: RAID Level 10 virtual disk creation command from Storage Management CLI does not
support optional parameter [spanlength=<n>] on PERC 9 hardware controllers.
• The Advanced Wizard does not provide the option to select span length for RAID Level 10 virtual disk
creation on PERC 9 hardware controllers.
• The span layout for RAID Level 10 virtual disk created from the Express Wizard on PERC 9 hardware
controllers uses the span layout as recommended by the firmware of the PERC 9 hardware controller.
NOTE: Storage Management uses the PERC 9 hardware controller-firmware suggested span
layout for RAID Level 10 virtual disk creation.
• The PERC 9 hardware controller firmware suggested span layout is same for the same set of physical
disks.
• Intelligent Mirroring feature is supported on PERC 9 hardware controllers.
• When you create a virtual disk using the Advanced Wizard on PERC 9 hardware controllers the span
layout information under Selected Physical Disks will not be displayed.
• Sliced RAID Level 10 virtual disk creation on PERC 9 hardware controllers support uneven span.
• Grouping of selected physical disks for RAID Level 10 virtual disk through the Advanced Wizard is not
supported on PERC 9 hardware controllers.
• When you import a foreign configuration from hardware controllers prior to PERC 9 hardware
controllers to PERC 9 hardware controllers, the span layout for RAID Level 10 virtual disk remains the
same.
• When you import a foreign configuration for RAID Level 10 virtual disks from PERC 9 hardware
controllers to other PERC 9 hardware controllers the span layout does not change.
NOTE: Importing a foreign configuration (other than RAID Level 10 virtual disks) from PERC 9
hardware controllers to hardware controllers prior to PERC 9 is not supported.
Related Tasks
• Create Virtual Disk Express Wizard
• Create Virtual Disk Advanced Wizard
Support For Advanced Format 4K Sector Hard-Disk Drives
From the introduction of PERC 9 hardware controller support in Storage Management, users using legacy
512B sector hard-disk drives can now transition to Advanced Format 4K sector hard-disk drives. 4K sector
hard-disk drives utilize the storage-surface media more efficiently by combining data that would have
been stored in eight 512B sector hard-disk drives into one sector of 4096B (4KB). This data-combining
feature in 4K sector hard-disk drives results in improved data efficiency and error correction capabilities.
Storage Management supports virtual disk creation on 4K sector hard-disk drives connected to PERC 9
controllers.
NOTE: 4K sector hard-disk drives are not supported on controllers (including Software RAID
controllers) prior to PERC 9 hardware controllers. If the 4K sector hard-disk drive is connected to
hardware controller prior to PERC 9 hardware controller, the 4K sector hard-disk drive is displayed
as Unsupported.
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