Installing Internal Drives
Considerations
Bay A comes with one SCSI CD-ROM drive and one 3.5-inch,
1.44 MB diskette drive. Bay A supports one 5.25-inch and one
3.5-inch, half-high diskette-interface device.
Bay B supports:
– One 5.25-inch, full-high, removable-media or
non-removable-media device, or
– One 5.25-inch, half-high, removable-media device and one
3.5-inch, half-high or one-inch high, removable-media
device, or
– Two 3.5-inch or two 5.25-inch, slim-high or half-high,
removable-media devices
You cannot install hot-swap drives in bay B.
PC Server 520 supports eighteen 3.5-inch, slim-high, hot-swap
hard disk drives, or nine 3.5-inch, half-high hard disk drives in
the bottom three banks (C, D, and E).
Banks C, D, and E can accommodate six slim-high drives or
three half-high drives, or a combination of both drive sizes. If
you use a combination, remember that one half-high drive uses
the equivalent space of two slim-high drives.
If you install drives in bank D or E, you must remove the fan
assembly on the rear of the server, install a direct access storage
device (DASD) backplane in bank D or E, and have another
power supply installed by your IBM service technician.
(Instructions for removing the fan assembly and installing a
backplane are given in “Installing a Drive in Bank D” on
page 221.)
You might need to install an additional SCSI-2 adapter.
(Instructions are given in “Installing Adapters” on page 180.)
Each backplane has six connectors, to support up to six hard
disk drives.
An address jumper is located on the rear of each backplane.
You must set the jumpers on these backplanes as described in
“Setting the Backplane Address Jumper (J2)” on page 251.
200 PC Server 520 User's Handbook for PCI/EISA
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