Ra-Series Disk Drives; Ra-Series Drive Controls - Digital Equipment MicroVAX 3600 Operation

3.1.1 RA-Series Disk Drives
RA-series disk drives provide high-volume mass storage for your
MicroVAX/VAXserver system. Your system may have up to three RA devices
mounted within the system cabinet (two RA70 drives in the BA213 enclosure
and one RA82 mounted at the top of the system cabinet) and additional
RA60/81 /82 devices in an auxiliary cabinet (up to a total of four RA-series
devices in all cabinets).
When your system has multiple disks, we recommend that you separate them
according to function. For example, if your system has three disks, you may
want to use them as follows:
• Disk 0 contains the operating system and applications installed on the
system.
• Disk 1 contains a data base or files accessible to all users, subject to the
normal file protection explained in your software manuals.
• Disk 2 contains work areas for each user with an account on the system.
The storage capacities and other specifications of the various disk drives in
the RA series are listed in MicroVAX 3600 VAXserver 3600/3602 Technical
Information.
This section covers the following:
• RA-series disk drive controls
• Inserting RA60 disk packs
• Removing RA60 disk packs
• Cleaning the RA81/82 filter
3.1.1.1 RA-Series Drive Controls
Controls for the RA60/81 /82 are located on the front control panel of each
device. Controls for the RA70 are located behind the sliding plastic window
on the front door of the system. To access the controls for the RA70 disk
drives, you must turn the key to position 2 or 3 and slide down the plastic
window. Figure 3-1 shows the location of these controls.
3-2 MicroVAX 3600 VAXserver 3600/3602 Operation