HP 3000 Manuals

Handling Disk Devices [ Controlling System Activity ] MPE/iX 5.0 Documentation


Controlling System Activity

Handling Disk Devices 

Disk drives and disk volumes, like all media used to store computer data,
require careful handling and proper environmental conditions.  Following
the guidelines listed below will extend the life of your disk storage
equipment and help maintain the integrity of data stored on disk packs
and diskettes.

Caring for Disk Packs 

Temperature and cleanliness of the storage area affect the
interchangeability of disk packs between drives.  Disk packs should be
stored in environmental surroundings that are nearly identical to those
of the operating area.  To ensure optimum performance, the temperature of
the disk drive and disk pack must be within +3 degrees C (+5.4 degrees F)
of each other.  If the disk packs are stored separately from the disk
drives, the temperature of the storage area should be maintained between
-15 degrees C and 60 degrees C (5 degrees F and 140 degrees F) with the
relative humidity between 0 and 95 percent (noncondensing).  When the
temperature and relative humidity of the storage area are different than
the disk drives' operational requirements, allow a minimum of two hours
for environmental stabilization before using the disk packs.

Storing Disk Packs 

Store disk packs in a clean, dust-free area.  Do not allow them to come
into contact with any magnetic material.  Steel storage cabinets protect
the packs, and allow easy access since you can adjust the shelf height.
Always store disk packs flat, not more than two high, with the top cover
of the storage case resting on the gasket of the bottom cover.  It is
also a good idea to wipe the outside of the disk pack storage case with a
liquid anti-static plastic cleaner periodically; this will minimize the
possibility of introducing dust and dirt into the disk pack.

Disk Pack Handling 

Other general precautions for handling disk packs include:

 *  Replace covers that are cracked, distorted or damaged.

 *  Do not touch the surface of the disk with any object, including your
    hands.  The disk surfaces can be distorted or damaged through impact,
    excessive pressure, or abrasion.

 *  Keep beverages off the disk drive and away from the disk pack storage
    area.  If spilled, they will leave a residue on the recording
    surface, which may require reconditioning of the disk.

 *  Keep all smoking materials away from the disk drives.  Smoke will
    contaminate the disk packs and interfere with the reliable operation
    of the drives.



MPE/iX 5.0 Documentation