Savvio FC Installation Guide
ST973401FC and ST936701FC
Fibre Channel interface disc drives
Publication Number: 100293078, Rev. A, April 2004
Handling precautions/Electrostatic discharge protection
•Disc drives are fragile. Do not drop or jar the drive. Handle the drive only by the edges or frame.
•Drive electronics are extremely sensitive to static electricity. Keep the drive in its antistatic container until you are ready to install it. Wear a wrist strap and cable connected to ground. Discharge static from all items near or that will contact the drive. Never use an ohmmeter on any circuit boards.
•Turn off the power to the host system during installation.
•Always use forced-air ventilation when operating the drive.
•Use caution when troubleshooting a unit that has voltages present.
•Do not disassemble the drive; doing so voids the warranty.
•Return the entire drive for depot service if any part is defective.
•Do not apply pressure or attach labels to the circuit board or to the top of the drive.
Electromagnetic compliance
See the Safety and Regulatory Agency Specifications page, part number 75789512, which was shipped with this installation guide.
Drive characteristics
| ST973401FC | ST936701FC |
Formatted capacity | 73.4 Gbytes | 36.7 Gbytes |
Total # of data blocks | 143,374,744 | 71,687,372 |
| (88BB998h) | (445DCCCh) |
Cylinders (user accessible) | 51,052 | 51,052 |
Heads (user accessible) | 4 | 2 |
Disc rotation +/– 5% | 10,009 RPM | 10,009 RPM |
What you need
•Screwdriver and four M3 x .5 metric drive mounting screws
•Forced-air ventilation to provide adequate drive cooling
•Host system with Fibre Channel host adapter or backplane
Installation instructions
1. Mount the drive in the host system carrier or tray
Most Fibre Channel host systems (including enclosures) provide a way to insert the drive using a carrier or tray, which allows the drive to be hot- plugged into the system’s Fibre Channel 40-pin single connector attach- ment (FC-SCA).
Mount the drive to the carrier or tray provided by the host system using four M3 x 0.5 metric screws. Do not over-tighten or force the screws. You can mount the drive in any orientation.
Note. FC drives are designed to be attached to the host system without I/O or power cables.
2. Insert the drive
Slide the carrier or tray into the appropriate bay in your host system. This connects the drive directly to your system’s 40-pin Fibre Channel single connector attachment (FC-SCA). The FC-SCA connector is normally located on a Fibre Channel backpanel.
Note. There are no jumpers or terminators on the drive, and power is sup- plied through the 40-pin connector.
3. Format the drive
The drive has been low level formatted at the factory. You do not need to perform another low level format on this drive unless you decide to perform certain diagnostics through the host adapter. If you do decide to perform a low level format, do not abort the format as this is likely to make the drive inoperable. A low level format, with verify turned on, will typically take 30 minutes for ST336754FC models, 60 minutes for ST936701FC models, or 90 minutes for ST973401FC models.
Protect against power failure or other power interruptions during the format.
a.Turn on DC power to the host system.
b.Boot the system from a system floppy, CD, or from a previously installed hard disc drive if there is one.
c.Format the drive.
Caution. Formatting a drive erases all user data. Be sure that you under- stand this principle before formatting any hard disc drive. It is not necessary to format a drive that previously has been used to store data, unless your intention is to erase all user data. Seagate® is not responsible for lost user data.
SavvioTM disc drives are designed to operate with a variety of operating systems. Please refer to your system or Fibre Channel host adapter (con- troller) manual for information about formatting and setting up the drive for use with your particular operating system.
Hot plugging the drive
This drive features hot plugging capabilities which allows you to insert and remove the drive without powering down the host system. Any time a drive is inserted or removed from a Fibre Channel loop, a short loop interruption occurs and the loop resynchronizes automatically to accommodate the added (or removed) drive.
Drive startup options
The drive’s motor will start spinning the discs based on the status of two sig- nals set by the host adapter. These two signals are called Start_1 and Start_2. There are four options as described below.
Option | Start_2 Start_1 | Motor spin function |
1 | Low | Low | Motor spins up at DC power on. |
2 | High | Low | Motor spins up when the host adapter sends |
| | | the SCSI Start command. |
3 | Low | High | Motor spins up after a delay of 12 seconds |
| | | times the physical address of the drive. |
4 | High | High | The drive will not spin up. |
Most systems that host only a couple of drives use option 1 to enable all of the drives to start up immediately when power is applied to the drives. Sys- tems hosting larger numbers of drives may be configured to start drives at various times to avoid overloading the capabilities of the host system’s power supply.
If you want to change the startup option for the drive, please refer to the documentation provided with your Fibre Channel host adapter or host sys- tem.
Troubleshooting
•Drive does not spin up. Remove and then reinsert the drive into the drive bay on the host-supplied carrier or tray. Make sure the drive makes firm contact with the host’s FC backpanel connector. Also, check the drive startup options for the Start_1 and Start_2 signals controlled from your host adapter. See “Drive Startup Options” above for the four possi- ble startup options.
•Computer does not seem to recognize the drive. Verify that the drive is enabled by the FC host adapter setup utility.
