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8
System Components and
Expansions
This chapter describes how to modify your server hardware (e.g. installing or
removing hard disk drives or redundant power supply units).
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You will find an overview and a brief description of the installed system
boards on the left side cover of the server. A detailed description of the
system board is provided in the corresponding technical manual.
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CAUTION!
Please note the safety instructions in chapter “Important Notes” on
page 7.
8.1
The HDD Subsystem
The HDD subsystem can accommodate up to 12 hard disk drives, up to two
SCSI backplanes and the SCSI controller.
Ultra3 SCSI hard disk drives (LVD) with a 3.5-inch format and a 1-inch form
factor, and an SCA interface are employed. The hard disk drives are mounted
in modules such that they are easy to insert and remove. The internal hard disk
drive modules are equipped with a status and an error indicator.
If a hard disk drive is controlled by a RAID controller and is part of a disk array
that operates at RAID Level 1 or 5, the corresponding module can be replaced
without shutting down the system (hot swap). To swap a hard disk drive, you
need a hard disk drive with the same or higher capacity. The reconstruction of
the data (rebuild) on the new hard disk takes place automatically after the swap,
provided that the RAID controller has been properly configured. Observe the
instructions in the manual of the RAID controller.
So that the storage capacity of the hard disk can be recognized at a glance
when the hard disk drive module is replaced, several prefabricated stickers with
the storage capacities are provided with the server. Each hard disk drive
(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.
