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Document ID: MCGN-42TQXN

Netfinity 5500 M10 - Internal Drives Installation

Applicable to: World-Wide

Source: Hardware Maintenance Manual

Internal Drives Installation
Different types of drives allow your system to read multiple types of media and store more data. Several types of drives are available, such as:
- Diskette
- Hard disk
- CD-ROM
- Tape

Internal Drive Bays: Internal drives are installed in bays. Your server comes with one 3.5-inch, 1.44 MB diskette drive and one CD-ROM drive.

1 Bay 1
2 Bay 2
3 Bay 3
4 Bay 4
5 Bay 5
6 Bay 6
7 Hot-swap bays
8 Removable-media bays
9 Bay B
10 Bay A
11 CD-ROM drive bay
12 Diskette drive bay

Your server contains hardware that lets you replace a failed hard disk drive without turning off the server. Therefore, you have the advantage of continuing to operate your system while a hard disk drive is removed or installed. These drives are known as hot-swappable drives. They are also referred to as hot-swap drives.

Each hot-swap drive bay has two indicator lights on the front of the server (see "Information LED Panel"). If the amber Hard Disk Status light for a drive is lit continuously, that individual drive is faulty and needs to be replaced. When the Hard Disk Status light indicates a drive fault, you can replace a hot-swap drive without turning off the server.

Each hot-swap drive that you plan to install must have a hot-swap-drive tray attached. The drive must have a single connector attachment (SCA) connector. Hot-swap-drive trays come with the hot-swap drives.

- Your server comes with a preinstalled 3.5-inch, 1.44 MB diskette drive and a preinstalled IDE CD-ROM drive.

- Bays A and B come without a device installed. These bays are for 5.25-inch, half-high, removable-media drives, such as tape backup drives. Bays A and B can be combined into a single full-high bay.

- The Netfinity 5500-M10 supports only one diskette drive.

- Your server does not support hard disk drives in bays A and B because of cooling considerations.

Note The server's EMI integrity and cooling are both protected by having the left front bays (removable-media bays) covered or occupied. When you install a drive, save the filler panel from the bay, in case you later remove the drive and do not replace it with another.

- If you are installing a device with a 50-pin connector in one of the removable-media bays (bays A-B), you need a 68-pin to 50-pin converter.
- Your server supports six slim (1-inch) or three half-high (1.6-inch), 3.5-inch hot-swap hard disk drives in the hot-swap bays.
- The hot-swap bays connect to a SCSI backplane. This backplane is the printed circuit board behind the bay. The backplane supports up to six hard disk drives.
- The diskette drive uses 1 MB and 2 MB diskettes. For optimum use, format 1 MB diskettes to 720 KB and format 2 MB diskettes to 1.44 MB.

SCSI Drives: Some drives have a special design called small computer system interface, or SCSI. This design allows you to attach multiple drives to a single SCSI channel.

Notes 1. Any information about SCSI drives also applies to other SCSI devices, such as tape drives. 2. If you plan to install both internal and external SCSI devices, you must follow the instructions in "External Options", in addition to these instructions.

A 16-bit (wide) SCSI cable connects the hot-swap backplane to one channel of the integrated RAID SCSI controller on the system board. An additional 16-bit SCSI cable with connectors for optional devices in bays A and B connects to the second channel of the RAID controller. This cable has a terminator at the other end and is folded and restrained with a cable clamp to the bottom of your server between the open bays and the power supply area.

SCSI IDs: Each SCSI device that is connected to an individual channel of the RAID controller needs a unique identification (ID) so that the controller can identify the devices and ensure that different devices do not attempt to transfer data at the same time. (The two channels of the integrated RAID controller operate independently.) If you need to set IDs for SCSI devices, refer to the instructions that come with those devices.

Your server automatically sets SCSI IDs for hot-swap hard disk drives, according to the jumper settings on the SCSI
backplanes. The server uses the hard disk drive SCSI IDs to send status information to the indicator lights above each hot-swap bay.

The SCSI backplane in the server supports up to six hot-swap bays. Table 7 shows the default SCSI IDs that
the backplane assigns for hot-swap hard disk drives.

You can change the default ID addresses of the drives by changing the jumper settings on the SCSI backplane. See
"SCSI Backplane Option Jumpers". A simplified layout of the SCSI backplane is shown in "SCSI Backplane Component Locations".

The processing sequence for SCSI devices is set through the ServeRAID Configuration Utility program. The sequence proceeds from the lowest SCSI ID to the highest (0 to 6, then 8 to 15).

Termination (Internal SCSI Devices): SCSI buses must be terminated at each end. The ends of the SCSI buses in your server are already terminated.

All the hot-swap drives in your server have automatic termination and the RAID controller provides termination at the other end of the SCSI bus.

If you install SCSI devices in the removable-media bays (bays A and B), you must disable the termination on the devices; the RAID controller is already terminated and the SCSI cable for devices in the removable-media drive bays has a terminator at the other end. For example, when you install a SCSI device in a removable-media drive bay (bay A or B), set its termination to Disable, because the SCSI cable is already terminated at the end.

Refer to the information that come with the SCSI device for instructions about setting device jumpers or switches that control termination.

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	Document Category	Diagrams
	Date Created	03-12-98
	Last Updated	18-01-99
	Revision Date	18-01-2000
	Brand	IBM PC Server
	Product Family	Netfinity 5500 M10
	Machine Type	8661
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