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Chapter 5. Drives
5.1. Requirements for DE6400 or DE6600 drive replacement
Before replacing a drive in a DE6400 or DE6600 array, review the requirements
and considerations.
Be aware that the drives in your storage array are fragile; improper drive handling
is a leading cause of drive failure.
5.1.1. Drive replacement requirements
Follow these rules to avoid damaging the drives in your storage array:
• Prevent electrostatic discharge (ESD):
◦ Keep the drive in the ESD bag until you are ready to install it.
◦ Open the ESD bag by hand or cut the top off with a pair of scissors. Do not insert a metal
tool or knife into the ESD bag.
◦ Keep the ESD bag and any packing materials in case you must return a drive later.
◦ Always wear an ESD wrist strap grounded to an unpainted surface on your storage
enclosure chassis. If a wrist strap is unavailable, touch an unpainted surface on your
storage enclosure chassis before handling the drive.
• Handle drives carefully:
◦ Always use two hands when removing, installing, or carrying a drive.
◦ Never force a drive into a shelf, and use gentle, firm pressure to completely engage the
drive latch.
◦ Place drives on cushioned surfaces, and never stack drives on top of each other.
◦ Do not bump drives against other surfaces.
◦ Before removing a drive from a shelf, unlatch the handle and wait 30 seconds for the drive
to spin down.
◦ Always use approved packaging when shipping drives.
• Avoid magnetic fields. Keep drives away from magnetic devices.
Magnetic fields can destroy all data on the drive and cause irreparable damage to the drive
circuitry.
5.1.2. Drive staggering in 24-drive controller shelf
Standard 24-drive shelves require drive staggering. The following figure shows how the drives are
numbered in each shelf (the shelf's front bezel has been removed).
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