Dell PowerEdge R740 EMC PowerEdge RAID Controller S140 Users Guide - Page 49

Virtual disks - Related errors

Page 49 highlights

Unable to find the NVMe PCIe SSD for operating system installation Likely Cause: S140 drivers are installed while NVMe is in non-RAID mode. Corrective Action: Ensure that NVMe is in RAID mode before installing S140 driver. Virtual disks - Related errors • Cannot create a virtual disk on page 49 • A virtual disk is in a degraded state on page 50 • Cannot assign a dedicated hot spare to a virtual disk • Cannot create a global hot spare on page 51 • A dedicated hot spare fails • Failed or Degraded Virtual Disk • Cannot create a virtual disk on selected physical disks • RAID disk created from the NVMe PCIe SSDs not appearing in operating system environment, showing as partitioned disks • Cannot create a virtual disk on selected physical disks • Unable to configure RAID on NVMe PCIe SSD using a third party RAID configuration utility Virtual disk size in decimals is not supported while creating a VD Likely Cause: After entering the disk size value, changing the virtual disk size unit from MB to GB or GB to TB and so on changes the disk size value. Corrective Action: It is recommended to select the virtual disk size unit before specifying the disk size value. Cannot create a virtual disk If you are unable to create a virtual disk, check the following causes: 1. The physical disk is not displayed. 2. Insufficient free space available on the selected physical disks. 3. Incorrect number of physical disks selected for the desired RAID level on page 49. 4. The desired physical disk is unavailable. 5. The system already has a maximum of 30 virtual disks. The physical disk is not displayed This error might be because: 1. The controller cannot communicate with the physical disks. 2. A cable might be loose or defective. 3. The physical disk might be a SAS drive. Re-seat the physical disks in the backplane and check their cables. Insufficient free space available on the selected physical disks There must be sufficient available free space on the physical disk used by the virtual disk. Incorrect number of physical disks selected for the desired RAID level For details about RAID levels and the allowable number of physical disks used with each RAID level, see understanding RAID levels in RAID Technology Guide at dell.com/support/manuals. Troubleshooting your system 49

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Unable to find the NVMe PCIe SSD for operating system
installation
Likely Cause:
S140 drivers are installed while NVMe is in non-RAID mode.
Corrective Action:
Ensure that NVMe is in RAID mode before installing S140 driver.
Virtual disks - Related errors
Cannot create a virtual disk
on page 49
A virtual disk is in a degraded state
on page 50
Cannot assign a dedicated hot spare to a virtual disk
Cannot create a global hot spare
on page 51
A dedicated hot spare fails
Failed or Degraded Virtual Disk
Cannot create a virtual disk on selected physical disks
RAID disk created from the NVMe PCIe SSDs not appearing in operating system environment, showing as partitioned disks
Cannot create a virtual disk on selected physical disks
Unable to configure RAID on NVMe PCIe SSD using a third party RAID configuration utility
Virtual disk size in decimals is not supported while creating
a VD
Likely Cause:
After entering the disk size value, changing the virtual disk size unit from MB to GB or GB to TB and so on
changes the disk size value.
Corrective Action:
It is recommended to select the virtual disk size unit before specifying the disk size value.
Cannot create a virtual disk
If you are unable to create a virtual disk, check the following causes:
1.
The physical disk is not displayed
.
2.
Insufficient free space available on the selected physical disks
.
3.
Incorrect number of physical disks selected for the desired RAID level
on page 49.
4.
The desired physical disk is unavailable
.
5.
The system already has a maximum of 30 virtual disks
.
The physical disk is not displayed
This error might be because:
1.
The controller cannot communicate with the physical disks.
2.
A cable might be loose or defective.
3.
The physical disk might be a SAS drive.
Re-seat the physical disks in the backplane and check their cables.
Insufficient free space available on the selected physical disks
There must be sufficient available free space on the physical disk used by the virtual disk.
Incorrect number of physical disks selected for the desired RAID level
For details about RAID levels and the allowable number of physical disks used with each RAID level, see understanding RAID levels in
RAID
Technology Guide
at
dell.com/support/manuals
.
Troubleshooting your system
49