Adaptec SAS RAID Controllers Instalační příručka stáhnout pdf (Strana 101)

Appendix E Best Practices 87

Typing this command causes the failed drive to return to a ready state in the GUI.

Best Practices For Rescanning or

Discovering Drives

If you add a new enclosure to an existing card, or if you initiate a card rescan and the

rescan finds a new physical disk drive on the card, the newly discovered drive might

be displayed as failed in the Sun StorageTek RAID Manager GUI (with a red X over

the drive). When a drive is displayed as failed in the GUI, it causes multiple

messages to be generated in the system messages file. These messages may indicate

there is a failed drive, that the drive must be removed, or that the drive is not

responding.

If this occurs, keep in mind that this is normal behavior for the GUI and you do not

need to perform any further action. Treating the drive as failed is the safest way in

which the GUI can handle newly discovered drives that are in an unkown state. After

some time passes, and the GUI determines nothing is wrong with the drive, the

failed marker will be removed and the drive can operate normally.

In the event that the newly added enclosure is a complete enclosure, it may take

several minutes for the GUI to remove the failed marker from each drive. This is

because the time for discovery is proportional to the number of drives added by the

enclosure.

Best Practices For Controlling the Boot

Order of Logical Drives

After installing a RAID HBA and creating at least one logical drive, the BIOS on the

host system might insert that drive into the hard disk drive boot order in front of

existing system disks. If the newly created logical drive does not have a boot sector,

you will be unable to boot the host system upon subsequent reboots. This is not an

issue if you are installing an internal RAID HBA, assuming you plan to boot off

logical drives. However, if you are installing an external RAID HBA, the drive boot

order might adversely affect other system boot drives.

To control the boot order of the logical drives on the host system, do the following:

1. Enter the host system BIOS, select boot, and review the Hard Disk Drives entry.

1 2 ... 96 97 98 99 100 101 102 103 104 105 106 ... 147 148

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Adaptec SAS RAID Controllers Instalační příručka Strana 101