51.584 bytes

Product Information

Document ID: MCGN-45WP3Y

Netfinity 5500 M20 - 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

The 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 the 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 might be faulty and needs to be checked. See "ServeRAID system board controller". 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.

• The 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 M20 supports only one diskette drive.
• The 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.
• The 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.
  

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. The other channel of the
integrated RAID SCSI controller is connected to the SCSI connector on the back of your server.

A 16-bit SCSI cable with connectors for optional devices in bays A and B is folded and restrained with a cable clamp to the bottom of your server between the open bays and the power supply area. This cable has a terminator on one end.

If you want to install a device in bay A or B, you can either:

• Install an additional SCSI adapter
• Disconnect the cable from the RAID channel 1 connector on the system board (see "System board component locations"). (This cable goes to the external SCSI connector on the back of the server, so you will not be able to attach external SCSI devices using the external SCSI connector.) Use the 16-bit SCSI cable to connect the device in bay A or B to the RAID channel 1 connector on the system board.

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.

	Search Keywords
	Document Category	Diagrams
	Date Created	12-03-99
	Last Updated	21-05-99
	Revision Date	16-03-2000
	Brand	IBM PC Server
	Product Family	Netfinity 5500 M20
	Machine Type	8662
	Model	ALL
	TypeModel
	Retain Tip (if applicable)
	Reverse Doclinks and Admin Purposes