Dell PowerEdge User Manual

Contents

Dell PowerEdge User Manual Manual pdf 11 page image

Physical DisksNOTE: The physical disks in a virtual disk must be of the same drive type (HDD, SSD or NVMe PCIe SSD). For example, youcannot mix an HDD and an NVMe PCIe SSD in the same virtual disk.Physical disk featuresPhysical disk roamingPhysical disk roaming is moving the physical disks from one cable connection or backplane slot to another on the same controller. Thecontroller automatically recognizes the relocated physical disks and logically places them in the virtual disks, which are part of the diskgroup. You can perform disk roaming only when the system is turned off.CAUTION: Do not attempt disk roaming during online capacity expansion (OCE). This causes loss of the virtual disk.Physical disk hot-swappingNOTE: To check if the backplane supports hot swapping, see your system documentation.Hot-swapping is the manual replacement of a disk while the PERC S140 is online and performing its normal functions. The followingrequirements must be met before hot-swapping a physical disk:• The system backplane or enclosure must support hot swapping for the PERC S140.• The replacement disk must be of the same protocol and disk technology. For example, only a SATA hard drive can replace a SATA harddrive and only a SATA SSD can replace a SATA SSD.NOTE: Disk hot-swapping is not supported in UEFI mode; it is supported only in OS mode.NOTE: When hot-swapping a physical disk, ensure that the new disk is of equal or greater capacity to the physical disk that isbeing replaced.Physical disk power managementPower management is a power-saving feature of the PERC S140. This feature supports power management of SATA hard drives (HDD) byusing Extended Power Conditions (EPC). The EPC feature set provides the host with additional methods to control the power condition ofa device.Physical disk failure detectionPhysical disk failure is detected and the controller automatically rebuilds a new physical disk assigned as a hot spare.NOTE: Refer to drive mixing restrictions for rebuilding.2Physical Disks 11