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Hawk 4XL Product Manual, Rev. A
5.2.6
Hot plugging Hawk 4XL disc drives
Caution: Hot-plug drives are not designed for simultaneous power disconnection 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. Hawk 4XL drives conform to the SCSI-3 standard require-
ments for glitch-free power-on and power-off. The drive maintains the high-impedance state at the device con-
nector 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 dur-
ing the hot connect/disconnect operation.
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 J2 pins 1, 2, 3, and 4.
2. Ensure that all SCSI devices on the bus have receivers that conform to the SCSI-3 standard.
3. Eliminate all I/O processes for the drive.
4. Wait until the drive motor and discs have come to a complete stop prior to changing the plane of operation,
ensuring data integrity.
5. Insert or remove the drive after meeting the following conditions:
Caution: Do not hot-plug the first or last device on the SCSI bus (the SCSI bus termination must be external
to the drive you are inserting or removing).
a. If you are inserting the drive, connect its power ground and logic ground at least 1 millisecond before
coming into contact with the bus connector. Maintain these ground connections during and after con-
necting the device to the bus.
b. If you are removing the device, maintain its power ground and logic ground connection for at least
1 millisecond after disconnecting the device from the bus.
c. You may simultaneously switch the power to the electronics and mechanics of the drive with the bus
contacts, if the power distribution system is able to maintain adequate power stability to other devices
during the transition and if you have met the grounding requirements given in steps 5a and 5b.
d. Ensure that the drive carrier discharges all static electricity prior to inserting the drive into the system.
Note.
Do not remove or add terminator power or resistance to the SCSI bus while hot plugging a disc drive.
5.2.7
S.M.A.R.T.
This feature not implemented by this drive family.
5.2.8
Product warranty
Beginning on the date of shipment to customer and continuing for a period of three years, Seagate warrants
that each product (including components and subassemblies) or spare part that fails to function properly under
normal use due to defect in materials on workmanship or due to nonconformance to the applicable specifica-
tions will be repaired or replaced, at Seagate's option and at no charge to customer, if returned by customer at
customer's expense to Seagate's designated facility in accordance with Seagate's Warranty Procedure.
Seagate will pay for transporting the repair or replacement item to customer. For more detailed warranty infor-
mation refer to the Standard terms and conditions of Purchase for Seagate products.
Shipping
When transporting or shipping a drive, a Seagate approved container must be used. Keep your original box.
They are easily identified by the Seagate Approved Package label. Shipping a drive in a non-approved con-
tainer voids the drive warranty.
Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in tran-
sit. Contact your Authorized Seagate Distributor to purchase additional boxes. Seagate recommends shipping
by an air-ride carrier experienced in handling computer equipment.
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