16 PERC 5 FeaturesNOTE: The maximum length of cable that you can use for Serial Attached SCSI (SAS) is 4 meters (13 feet) from portto port. This applies only to external cables.NOTE: The maximum array size is limited by the maximum number of drives per array (32) and the maximumnumber of spans per disk group (8), along with the size of the physical drives. This limits the number of spans inRAID 10 to eight, giving a total of 16 drives per virtual disk.Compatibility With Virtual Disks Created on Existing PERC 5 ControllersThe PERC 5 controllers recognize and use virtual disks created on existing PERC 5 controllers withoutrisking data loss, corruption, redundancy, or configuration loss. Similarly, the virtual disks created on thecontrollers can be transferred to other PERC 5 controllers.NOTE: For more information about compatibility, contact your Dell Technical Support Representative.Maximum Number ofVirtual Disks per DiskGroupUp to 16 virtual disks perdisk groupRAID 0=16RAID 1=16RAID 5=16RAID 10= 1RAID 50=1Up to 16 virtual disks perdisk groupRAID 0=16RAID 1=16RAID 5=16RAID 10=1RAID 50=1Up to 16 virtual disks perdisk groupRAID 0=16RAID 1=16RAID 5=16RAID 10=RAID 50=1Multiple Virtual Disksper ControllerUp to 64 virtual disks percontrollerUp to 64 virtual disks percontrollerUp to 64 virtual disks percontrollerSupport for x8 PCIExpress host interfaceYes Yes YesOnline CapacityExpansionYes Yes YesDedicated and GlobalHot SparesYes Yes YesHot Swap DevicesSupportedYes Yes YesNon-Disk DevicesSupportedNo No NoMixed Capacity PhysicalDisks SupportedYes Yes YesHardware Exclusive-OR(XOR) AssistanceYes Yes Yesa The PERC 5/i Adapter supports a battery backup unit (BBU) on selected systems only. See the documentation that shippedwith the system for additional information.Table 2-1. PERC 5 Controller Comparisons (continued)Specification PERC 5/E Adapter PERC 5/i Adapter PERC 5/i IntegratedDell_PERC5_UG.book Page 16 Tuesday, February 13, 2007 6:02 PM
