Seagate Barracuda ST11950N, Руководство по эксплуатации продукта

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28 Barracuda 1 and 2 Product Manual, Rev. C
6.2.3 Preventive maintenance
No preventive maintenance is required.
6.2.4 Service life
The drive has a useful service life of 5 years. Depot repair or replacement of
major parts is permitted during this period.
6.2.5 Service philosophy
Special equipment is required to repair the drive’s HDA. To achieve the
5-year service life, repairs must be performed only at a properly equipped
and staffed service and repair facility. Troubleshooting and repair of PCBs
in the field is not recommended because of the extensive diagnostic
equipment required for effective servicing. Also, there are no spare parts
available for this drive. The drive’s warranty is voided if the HDA is opened.
6.2.6 Installation
The drive is designed, manufactured, and tested with a “plug in and play”
installation philosophy. This philosophy minimizes the requirements for
highly trained personnel to integrate the drive into the OEM’s system,
whether in a factory or field environment. Refer to Section 4.4 and to the
Barracuda 1 and 2 Installation Guide (83327770) for installation instructions.
The drive has been low-level formatted at the factory and does not need to
be reformatted.
6.2.7 Service tools
No special tools are required for site installation or recommended for site
maintenance. Refer to Section 6.2.3. The depot repair philosophy of the drive
precludes the necessity for special tools. Field repair of the drive is not
practical because users cannot purchase individual parts for the drive.
6.2.8 Hot plugging Barracuda 1 and 2 disc drives
Caution. Hot-plug drives are not designed for simultaneous power discon-
nection and physical removal.
During power-up and power-down periods, the hot SCSI connect/disconnect
capability does not produce glitches or any corruptions on an active SCSI
bus. Barracuda 1 and 2 drives conform to the SCSI-3 standard requirements
for glitch-free power-on and power-off. The drive maintains the high-imped-
ance state of the device connector contacts during a power cycle until the
transceiver is enabled.
Note. The systems integrator must ensure that no temperature, energy, or
voltage hazard is presented during the hot connect/disconnect opera-
tion.
Procedure:
1. Configure the drive with no connection between the drive and the
TRMPWR signal on the SCSI bus. To accomplish this, remove all
jumpers from connector J1.
2. Ensure that all SCSI devices on the bus have receivers that conform to
the SCSI-3 standard.