See J4 and J5. Press down gently but firmly to make sure that the controller is properly seated in the slot, as shown in Figure Table Array Performance Features. After you have installed the PERC 4 controller in the server and have attached all physical drives, perform the following steps to prepare a RAID disk array:. Jumper pins to disable onboard SCSI termination. Dell OpenManage Array Manager is used to configure and manage a storage system that is connected to a server, while the server is active and continues to handle requests.
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See the safety instructions in your system documentation for information about protecting against electrostatic discharge. The controller supports array deletion, which is the ability to delete any unwanted logical drives and use prrc space for a new logical drive.
This occurs even in a degraded RAID set. When set to Enabled the defaultdrives are automatically rebuilt when they fail. Making hot spares is optional.
PERC 4 Features: Dell PowerEdge Expandable RAID Controller 4/SC and 4/DC User’s Guide
You can use the RAID management utilities to designate drives as hot spares. Set this option to operate in I2O or Mass Storage mode. Hot spares are physical drives that are powered up along with the RAID drives and usually cotnroller in a standby state.
No-Read-Ahead specifies that the controller does not use read-ahead for the current logical drive. It contains tables you can complete to list the configuration for the physical drives rair logical drives. Unpack and remove the controller and inspect it for damage. The numbering of the controllers follows the PCI slot scanning order used by the host motherboard.
The cable length can be up to 12 meters for LVD devices. This gives you the option to enter the configuration utility to resolve the problem.
Jumper pins to enable software control of SCSI termination via drive detection. Firmware was not loaded. In Easy Configurationeach physical array you create is associated with exactly one logical drive.
If a hard drive fails in an array that is configured as a RAID 1, 5, 10, or 50 logical drive, you can recover the lost data by rebuilding the drive.
It displays the array, and array number, such as A If you replace a failed drive with a hard drive in the same slot, the rebuild begins automatically.
You can specify a logical drive as the boot drive on this controller. Set up the power supplies so that the SCSI devices are powered up at the same time as or before the host system. Table Firmware Initialization States.
It does not affect the Read-ahead cache. Rebuilding can take some time, depending on the number of drives selected and the drive capacities. External very-high density SCSI bus connector. The parameters of the existing logical drives appear.
Table describes the features offered by the utilities used for RAID management. This section describes the procedures used to perform the following:. Replace the system cover and reconnect the AC power cords. Turn off the system and remove the AC power cord.
Deletion of a logical drive is blocked under the following conditions: Disconnect the system from any networks before installing the controller. RAID 1 requires exactly two physical drives. The following BIOS options are available at bootup: The default is Enable Alarm.