System expansions for tower server
SCSI hard disk drives
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A26361-K632-Z100-1-7619
SCSI hard disk drives
The server can accommodate four or six carriers for 3 ½-inch hard disk drives. Each hard disk drive
plug-in module can accommodate an SCSI hard disk drive with an SCA interface and a maximum
height of 1.6 inches or 1 inch.
!
Never pull out a hard disk during operation if you are not sure that the hard disk is
operated on a DAC and is part of a disk array that operated in the mode RAID Level 1 or
5.
If the SCSI hard disk drive is operated on a disk array controller (DAC) and belongs to a disk array
operated with RAID level 1 or level 5, a defective hard disk drive can be swapped during operation
(hot replace). To swap a hard disk, you need an SCSI hard disk drive with the same or higher
capacity. You will identify a defective SCSI hard disk drive by a glowing orange indicator on the hard
disk carrier (see "
"). A rebuild on the new hard disk is performed
automatically after the swap, provided the DAC is correctly configured. Refer to the information in
the DAC manual.
So that the storage capacity of the hard disk can be recognized at a glance when the hard disk is
replaced, several prefabricated stickers with the storage capacities are provided with the server.
Each hard disk (slide-in module) should bear a sticker indicating its capacity on the front. Should no
suitable sticker be available, blank stickers for labeling are also provided. The stickers are color
coded for easier identification.
!
If you want to swap several defective SCSI hard disk drives during operation, proceed as
follows:
•
Swap the first SCSI hard disk drive.
•
Wait at least 60 seconds before continuing.
•
Swap the next SCSI hard disk drive etc.
The SCSI-IDs of the hard disk drive plug-in modules are permanently assigned in the order 0, 1, 2, 3
or 0, 1, 2, 12, 13, 14 from bottom to top.
The following applies if SCSI hard disk drives are operated on a DAC:
RAID level 0 and 7
Rebuild is not possible. If a hard disk fails, its data is lost.
RAID level 1 and 5 without standby hard disk
Rebuild on the new disk is carried out automatically when the old disk is swapped.
RAID level 1 and 5 with standby hard disk
A standby hard disk is automatically enabled as a replacement for the defective hard disk and the
data of the defective disk is rebuilt on the standby disk.
Ê
Read the documentation for the new hard disk drive.
The hard disk drives which can be ordered for the server are supplied already mounted in the hard
disk carriers.
A hard disk in the hard disk carrier can only be replaced by a service technician.
