mode. The 146GB disk is available in speeds of 10,000RPM only at this time, but the other capacities are available in 10,000RPM or 15,000RPM speeds.
Disks FRUs are hot-swappable or hot-serviceable depending their logical configuration – i.e., depending on whether the disks are configured to provide redundant RAID protection or not. The disks are not slot dependent. This allows them to be removed, stored and replaced into the system in random order without affecting stored information or system configuration.
FIGURE 6: Disk Drives (front view with bezel removed)
Disks are mounted into a rugged sliding tray and held securely in place by a front-mounted handle with locking thumbscrew. To remove a disk, turn the thumbscrew collar on its front panel to the left until loose, then lift the handle and pull the disk tray out of its slot. To install a disk, slide the disk into an empty slot until it stops, lower the handle fully and turn the thumbscrew to the right until secure. To lock a disk in place, use a Phillips screwdriver to turn the screw within the thumbscrew collar to the right. To unlock a disk, turn the screw to the left. Avoid operating a SANnet II 200 SCSI array for more than a few minutes with a disk removed to maintain optimum cooling. If a disk is being removed for an extended period of time, install an air management module in its place.
Power and Cooling Modules
The SANnet II 200 SCSI array features a redundant pair of combination power and cooling modules. Each is a fully integrated FRU that includes an isolated power inlet, a 420-watt power supply and dual 52CFM cooling fans. Each FRU can provide the power and cooling necessary to operate the entire enclosure in the event one were to fail.
The power and cooling of SANnet II 200 SCSI arrays is designed for maximum RAS. The power supplies support automatic load sharing and load balancing to ensure long service lives. Power supplies are further protected from the potential damage due to over-current, over-voltage, short circuits and extreme temperature conditions.
Power options are available to support worldwide AC or DC power. The AC option has an auto- ranging capability from 90VAC to 264VAC and 47Hz to 63Hz. The DC option has an auto- ranging capability of –36VDC to –72VDC. An enclosure can be converted from one power option to another by simply replacing both power and cooling FRUs.
FIGURE 7: Power/Cooling Module
