HPOC case studies
HPOC · Put your knowledge to work in context.
The HP OpenVMS Certified Professional (often shortened to HPOC) is a vendor-style credential for IT professionals who administer or support OpenVMS systems. It signals that a candidate can reason about the operating system at the level a working system manager needs: how the boot chain and system parameters fit together, how accounts and privileges are governed, how volumes and file systems are laid out, and how clusters, networking, and backups behave under real operational pressure. The HPOC case studies are 5 cases and about 3,730 words.
1Batch Queue Starvation After Adding a Second CPU
A two-node OpenVMS Alpha cluster runs a nightly batch window. Node ALPHA1 has 2 CPUs and 1 GB memory; ALPHA2 has 1 CPU and 512 MB.
811 words, about 4 min2Volume Shadowing Member Resynchronization After Site Power Loss
A three-member shadow set DSA1 (members 1 DGA100, 1 DGA200, 1 DGA300) holds the system disk on a two-node OpenVMS Integrity cluster. During a site power event, node NODE1 lost power abruptly; NODE2 stayed up on UPS and continued serving.
745 words, about 4 min3User Cannot Log In After Security Policy Change
An OpenVMS Integrity system enforces a site security policy. The security administrator recently changed the system password policy: minimum password length raised from 8 to 12, password lifetime reduced to 60 days, and a new intrusion-detection policy.
690 words, about 3 min4DECnet Phase IV Node Cannot Reach a New Host
A legacy OpenVMS Alpha system still runs DECnet Phase IV for a manufacturing control application. Its node address is 12.345.
767 words, about 4 min5Backup Window Missed and Restore Fails Mid-Recovery
A production OpenVMS cluster runs a nightly BACKUP of the system disk to a tape library. Last night the backup job exceeded its window and was killed by the operator at 04:00, leaving a partial save set on tape.
717 words, about 4 min