Disk Enclosure Features; Figure 1-2. Disk Enclosure (Rear View) - Compaq 4200 User Manual

1–2 Compaq StorageWorks Enclosure 4200 Family LVD Disk Enclosure User Guide
Figure 1–2. Disk enclosure (rear view)

Disk Enclosure Features

The Model 4214- and Model 4254-series enclosures support fourteen, 1-inch, 3.5-inch
form factor hard disk drives or drive blanks. These enclosures are available in either a
rack mountable version (4214R) or in a tower version (4214T). A rack (cabinet) mounted
enclosure requires a RETMA 3U vertical opening (5.25-inches) where a "U" is 1.75
inches.
The enclosure provides several features, including:
Hot-pluggable drives, environmental monitoring unit (EMU), blowers, and power
supplies are replaceable without stopping SCSI bus data transfers.
NOTE: An element with a port colored latch, tab, or handle is hot pluggable.
Pluggable I/O module and SCSI bus cables require stopping all data transfers, but do
not require removing power before replacing.
Depending upon the host controller, the I/O module is capable of supporting
Wide-Ultra2 SCSI (LVD) or Wide-Ultra SCSI (SE) bus operations.
CAUTION: To ensure proper cooling, all drive bays must have either a drive or drive
blank installed.
CXO7082A