HP XP20000XP24000 Disk Array - Manual (Page 59)

6 Troubleshooting
This chapter describes troubleshooting problems when using XP Thin Provisioning and where to call.
XP Thin Provisioning Troubleshooting
Table 17 on page 59 provides troubleshooting instructions for XP Thin Provisioning operations.
Table 17 Troubleshooting for XP Thin Provisioning
Problems Causes and Solutions
Cannot install XP Thin Provisioning.
Cause:
• Shared memory for the V-VOL management area is not
installed.
Solution:
• Call HP technical support and check if the shared memory
for the V-VOL management area is installed.
Pool usage rate exceeds the threshold.
Causes:
• Too many V-VOLs are associated with the pool, or too much
data is stored in the pool.
• The capacity of the pool is insufficient.
• The threshold of the pool is too low.
Solutions:
• Add some pool-VOLs to increase the capacity of the pool.
See “ Creating Pools ” on page 44.
• Set a larger value for the threshold of the pool. See
“ Changing the Pool Information ” on page 45.
In addition, after the problems are solved, you need to
complete the SIMs. If you do not complete the SIMs, no new
SIM can occur even if the usage rate exceeds the threshold
again. For details about the procedure to complete SIMs, see
“ Managing Pool-Related SIMs ” on page 61.
Note : You need unused volumes to add pool-VOLs. If there
are no unused volumes, you need to create new volumes or
ask HP technical support to add hard disks. Therefore, it may
take time to solve the problem.
V-VOL usage rate exceeds the threshold.
Cause:
• Too much data is stored in the V-VOL. This may cause a
decrease in the capacity of the pool.
Solutions:
• If the free space for the pool tends to be insufficient, copy
the V-VOL data to a normal volume and delete the relevant
V-VOL.
• Add some pool-VOLs to increase the capacity of the pool.
See “ Creating Pools ” on page 44.
• Raise the threshold of the V-VOL.
XP24000 Thin Provisioning Software User's Guide 59