Hp XP20000XP24000 Disk Array Manuel d'utilisateur télécharger pdf (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.

Table17Troubleshooting forXPThinProvisioning

Problems Causes and Sol

utions

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.

• Thecapacity of thepool 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”onpage44.

• Set a larger value for the threshold of the pool. See

“Changing the Pool Information”onpage 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”onpage61.

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-V

OL usage rate exceeds the threshold.

Cause

• Too m

uch data is stored in the V-VOL. This may cause a

decr

ease in the capacity of the pool.

Solu

tions:

• If t

he free space for the pool tends to be insufﬁcient, copy

the

V-VOL data to a normal volume and delete the relevant

V-V

OL.

• Ad

d some pool-VOLs to increase the capacity of the pool.

e“Creating Pools”onpage44.

• Ra

ise the threshold of the V-VOL.

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