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Dell PowerEdge R740xd2 EMC PowerEdge RAID Controller S140 Users Guide - Page 13

Mirror rebuilding, Fault tolerance, Self-Monitoring And Reporting Technology, Native Command Queuing

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Mirror rebuilding A RAID mirror configuration can be rebuilt after a new physical disk is inserted and the physical disk is designated as a hot spare. NOTE: The system does not have to be rebooted. Fault tolerance The following fault tolerance features are available with the PERC S140: • Physical disk failure detection (automatic). • Virtual disk rebuild using hot spares (automatic, if the hot spare is configured for this feature). • Parity generation and checking (RAID 5 only). • Hot-swap manual replacement of a physical disk without rebooting the system (only for systems with a backplane that allows hot- swapping). If one side of a RAID 1 (mirror) fails, data can be rebuilt by using the physical disk on the other side of the mirror. If a physical disk in RAID 5 fails, parity data exists on the remaining physical disks, which can be used to restore the data to a new replacement physical disk configured as a hot spare. If a physical disk fails in RAID 10, the virtual disk remains functional and data is read from the surviving mirrored physical disk(s). A single disk failure in each mirrored set can be sustained, depending on how the mirrored set fails. Self-Monitoring And Reporting Technology The Self-Monitoring and Reporting Technology (SMART) feature monitors certain physical aspects of all motors, heads, and physical disk electronics to help detect predictable physical disk failures. Data on SMART compliant physical disks can be monitored to identify changes in values and determine whether the values are within threshold limits. Many mechanical and electrical failures display some degradation in performance before failure. A SMART failure is also referred to as a predicted failure. There are numerous factors that are predicted physical disk failures, such as a bearing failure, a broken read/write head, and changes in spin-up rate. In addition, there are factors related to read/write surface failure, such as seek error rate and excessive bad sectors. NOTE: For detailed information on SCSI interface specifications, see t10.org, and for detailed information on SATA interface specifications, see t13.org. Native Command Queuing Native Command Queuing (NCQ) is a command protocol used by SATA physical disks supported on the S140 controller. NCQ allows the host to provide multiple input/output requests to a disk simultaneously. The disk decides the order to process the commands to achieve maximum performance. NVMe PCIe SSD support S140 supports the NVMe PCIe SSD-including the NVMe PCIe SSD 2.5-inch Small Form Factor (SFF) and NVMe PCIe SSD Adapter. The S140 allows the NVMe PCIe SSD 2.5 inch SFF and the NVMe PCIe SSD adapter in a RAID configuration. The NVMe PCIe SSDs supports volume, RAID 0, RAID 1, RAID 5, and RAID 10. S140 also supports Prepare to remove feature to remove Non-RAID NVMe volume from the Dell EMC open manage console. NOTE: Recommended minimum version to support Samsung PM1733 and PM1735 drives is S140 5.5.2.8. NOTE: Hot removal or hot insertion of the NVMe PCIe SSDs in UEFI or pre-boot mode is not supported. In the operating system environment, hot-swapping two or more NVMe PCIe SSDs simultaneously is not supported. NOTE: Mixing of SATA drives and NVMe PCIe SSDs in a virtual disk is not supported. NOTE: Ensure that you use only the S140 UEFI configuration utility to configure the NVMe PCIe SSDs during preboot. Physical Disks 13

Section	Page
Dell EMC PowerEdge RAID Controller S140 User’s Guide	3
Overview	7
PERC S140 specifications	7
Supported operating systems	10
Supported PowerEdge systems	10
Supported physical disks	10
Management applications for the PERC S140	11
Physical Disks	12
Physical disk features	12
Physical disk roaming	12
Physical disk hot-swapping	12
Physical disk power management	12
Physical disk failure detection	12
Mirror rebuilding	13
Fault tolerance	13
Self-Monitoring And Reporting Technology	13
Native Command Queuing	13
NVMe PCIe SSD support	13
Physical disk write cache policy for SATA drives	14
Linux RAID	14
Virtual Disks	15
Virtual disk features	15
TRIM for SATA SSDs	15
To perform TRIM on the pass-through SSDs	15
Disk initialization	15
Background Array Scan	16
Checkpointing	16
Consistency check	16
Background initialization	16
Automatic virtual disk rebuild	16
Virtual disk cache policies	16
Virtual disk migration	17
Migrating a virtual disk	17
Expanding virtual disk capacity	17
Cabling the drives for S140	18
Disk connectivity for AHCI devices	19
BIOS Configuration Utility	20
Entering the BIOS configuration utility	20
Exiting the BIOS Configuration Utility	21
Initializing the physical disks	21
Converting to RAID disks	21
Converting to Non-RAID disks	21
Creating the virtual disks	22
Selecting virtual disk sizes while creating a virtual disk	22
Deleting the virtual disks	22
Swapping two virtual disks	22
Managing the hot spare disks	23
Assigning the global hot spare disks	23
Assigning the dedicated hot spare disks	23
Unassign hot spare disks	24
Viewing the physical disks details	24
Viewing the virtual disks details	24
Rescan disks	24
Controller Options	25
Continue to boot	25
UEFI RAID configuration utility	26
Entering the DELL PERC S140 Configuration Utility	26
Exiting the DELL PERC S140 Configuration Utility	27
Controller management	27
Viewing the controller properties	27
Changing the boot order of the virtual disks	28
Stopping the system from booting if there is a critical BIOS error	28
Converting a physical disk to a Non-RAID disk	28
Converting physical disk to RAID capable disk	29
Rescan disks	29
Virtual disk management	29
Configuring Windows RAID	29
Configuring Linux RAID	30
Mixed RAID configuration	31
Manage virtual disk properties	31
Viewing virtual disks properties and policies	32
Deleting a virtual disk	33
Physical disk management	34
Viewing physical disk properties	34
Managing the physical disk write cache policy for SATA drives	35
Assigning the global hot spare	36
Unassign a global hot spare	36
Assigning the dedicated hot spare	36
Cryptographic erase	37
Viewing global hot spares	37
Installing the drivers	38
Pre-installation requirements	38
Setting the SATA controller to RAID mode	38
Setting the NVMe PCIe SSDs to RAID mode	38
Creating a virtual disk	39
Checking PERC S140 options and the boot list priority.	39
Creating the device driver media for Windows driver installation	40
Downloading drivers for PERC S140 from the Dell support website for all operating systems	40
Downloading drivers from the Dell Systems Service and Diagnostic Tools media for Windows	40
Accessing ZP files	40
Troubleshooting your system	42
Precautions for hot removal or hot insertion of NVMe drives	42
Unable to configure Linux RAID using UEFI Configuration Utility	42
Performance degradation after disabling SATA physical disk write cache policy	42
Unable to modify any feature settings in UEFI or OPROM	43
Extra reboot during OS installation	43
After enabling Hypervisor, system displays Blue Screen of Death	43
After enabling node interleaving in BIOS, system displays Blue Screen of Death	43
OS installation failing on NVMe PCIe SSD with third-party driver	43
System startup issues	43
System does not boot	44
Controller mode is set incorrectly at System Setup	44
Boot mode, boot sequence, and or boot sequence retry are set incorrectly	44
Bootable virtual disk is in a failed state	44
The boot order is incorrect for a bootable virtual disk	44
A Non-RAID virtual disk is no longer in first position in the BIOS configuration utility list after a system reboot	44
The BIOS configuration utility option does not display	45
Configuring RAID using the Option ROM Utility is disabled	45
Warning Messages	45
WARNING- Found virtual disks that are degraded	45
WARNING - Found virtual disks that are failed	45
WARNING - Found virtual disks that are degraded and failed	46
Offline status of SAMSUNG 1733 or 1735 drives	46
Other errors appearing on the BIOS screen	46
BSOD is observed while booting on the NVMe configuration server	46
Failure of dump file creation	47
S140 does not display greater than ten virtual disks in the BIOS Configuration Utility or CTRL R	47
Unable to delete virtual disks when there are more than 30 virtual disks present in the system	47
Virtual disk rebuild status in the BIOS Configuration Utility (<CTRL><R>) or in UEFI HII	47
Physical disk - related errors	47
The physical disk fails	47
A physical disk is not visible in the BIOS Configuration Utility or is offline	47
A physical disk is highlighted red at the BIOS Configuration Utility or Ctrl R	48
Cannot initialize a physical disk	48
Status LED is not working	48
Blinking and unblinking feature not working on PowerEdge R740	48
Cannot update NVMe PCIe SSD firmware by using Dell Update Package or DUP	48
Third-party driver installation for NVMe PCIe SSD failing	48
Unable to find the NVMe PCIe SSD for operating system installation	49
Virtual disks - Related errors	49
Virtual disk size in decimals is not supported while creating a VD	49
Cannot create a virtual disk	49
The physical disk is not displayed	49
Insufficient free space available on the selected physical disks	49
Incorrect number of physical disks selected for the desired RAID level	49
The desired physical disk is unavailable	50
The system already has a maximum of 30 virtual disks	50
A virtual disk is in a degraded state	50
A physical disk was removed	50
Physical or mechanical problems with the physical disk	50
The virtual disk has lost redundancy	50
Corrupted metadata in the virtual disk	50
Cannot assign a dedicated hot spare to a virtual disk	50
The RAID level does not allow a dedicated hot spare to be created	50
The designated physical disk does not have sufficient capacity to be a dedicated hot spare	51
The physical disk is already part of a virtual disk	51
The physical disk are of different types	51
Cannot create a global hot spare	51
There are no empty physical disks available or the physical disks have not been converted to RAID-capable disks	51
The physical disk is already part of a virtual disk	51
The physical disk assigned as the global hot spare has failed	51
The physical disk assigned as the global hot spare is missing	51
A dedicated hot spare fails	52
The controller cannot communicate with the hot spare	52
The dedicated spare is not visible in the BIOS Configuration Utility or is offline	52
Failed or degraded virtual disk	52
Cannot create a virtual disk on selected physical disks	52
RAID disk created from the NVMe PCIe SSDs not appearing in operating system environment, showing as partitioned disks	52
Cannot perform an Online Capacity Expansion or Reconfigure on a virtual disk	52
Unable to configure RAID on NVMe PCIe SSD using a third party RAID configuration utility	52
Getting help	53
Contacting Dell	53
Locating your system Service Tag	53
Related documentation	53

Match case Limit results 1 per page

Mirror rebuilding

A RAID mirror configuration can be rebuilt after a new physical disk is inserted and the physical disk is designated as a hot spare.

NOTE:

The system does not have to be rebooted.

Fault tolerance

The following fault tolerance features are available with the PERC S140:

•

Physical disk failure detection (automatic).

•

Virtual disk rebuild using hot spares (automatic, if the hot spare is configured for this feature).

•

Parity generation and checking (RAID 5 only).

•

Hot-swap manual replacement of a physical disk without rebooting the system (only for systems with a backplane that allows hot-

swapping).

If one side of a RAID 1 (mirror) fails, data can be rebuilt by using the physical disk on the other side of the mirror.

If a physical disk in RAID 5 fails, parity data exists on the remaining physical disks, which can be used to restore the data to a new

replacement physical disk configured as a hot spare.

If a physical disk fails in RAID 10, the virtual disk remains functional and data is read from the surviving mirrored physical disk(s). A single

disk failure in each mirrored set can be sustained, depending on how the mirrored set fails.

Self-Monitoring And Reporting Technology

The Self-Monitoring and Reporting Technology (SMART) feature monitors certain physical aspects of all motors, heads, and physical disk

electronics to help detect predictable physical disk failures. Data on SMART compliant physical disks can be monitored to identify changes

in values and determine whether the values are within threshold limits. Many mechanical and electrical failures display some degradation in

performance before failure.

A SMART failure is also referred to as a predicted failure. There are numerous factors that are predicted physical disk failures, such as a

bearing failure, a broken read/write head, and changes in spin-up rate. In addition, there are factors related to read/write surface failure,

such as seek error rate and excessive bad sectors.

NOTE:

For detailed information on SCSI interface specifications, see

t10.org

, and for detailed information on SATA

interface specifications, see

t13.org

Native Command Queuing

Native Command Queuing (NCQ) is a command protocol used by SATA physical disks supported on the S140 controller. NCQ allows the

host to provide multiple input/output requests to a disk simultaneously. The disk decides the order to process the commands to achieve

maximum performance.

NVMe PCIe SSD support

S140 supports the NVMe PCIe SSD-including the NVMe PCIe SSD 2.5-inch Small Form Factor (SFF) and NVMe PCIe SSD Adapter.

The S140 allows the NVMe PCIe SSD 2.5 inch SFF and the NVMe PCIe SSD adapter in a RAID configuration. The NVMe PCIe SSDs

supports volume, RAID 0, RAID 1, RAID 5, and RAID 10. S140 also supports

Prepare to remove

feature to remove Non-RAID NVMe

volume from the Dell EMC open manage console.

NOTE:

Recommended minimum version to support Samsung PM1733 and PM1735 drives is S140 5.5.2.8.

NOTE:

Hot removal or hot insertion of the NVMe PCIe SSDs in UEFI or pre-boot mode is not supported. In the operating

system environment, hot-swapping two or more NVMe PCIe SSDs simultaneously is not supported.

NOTE:

Mixing of SATA drives and NVMe PCIe SSDs in a virtual disk is not supported.

NOTE:

Ensure that you use only the S140 UEFI configuration utility to configure the NVMe PCIe SSDs during preboot.

Physical Disks