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Behavior of the HP XP7 Storage disk arrayCompatible XRC Options

"Donot Block" is Not Specified by SDM ("Block" is

Specified)

"Donot Block" is Specified by

SDM

SettingOption

The storage system does not report an SIM to the

host when the usage of sidefile exceeds the sleep

wait threshold.

The storage system does not

report an SIM to the host when

the usage of sidefile exceeds

the sleep wait threshold.

Disable

——Enable*Level 2 Suspend

Even when the amount of used sidefile capacity

exceeds the level-2 threshold, level-2 suspension

Even when the amount of used

sidefile capacity exceeds the

Disable

does not occur and the storage system does not

report SCP-SCI to the host.

level-2 threshold, level-2

suspension does not occur and

the storage system does not

report SCP-SCI to the host.

* You cannot use this setting when the block option of XRC is set to Volume Level.

The following table shows the behavior of a storage system when the block option is “Cache Level.”

Behavior of the HP XP7 Storage disk arrayCompatible XRC Options

Donot Block is Not specified by SDM (Block

is specified) or Donot Block (Volume Level)

is disabled

Donot Block is specified by SDM and Donot

Block (Volume Level) is enabled

SettingOption

If Level 1 Sleep is enabled, the disk array

reports an SIM to the host when the amount

The disk array does not report an SIM to the

host when the amount of used sidefile

capacity exceeds the sleep wait threshold.

EnableLevel 1 SIM

of used sidefile capacity exceeds the sleep

wait threshold.

If Level 1 Sleep is disabled, the disk array

does not report an SIM to the host when the

amount of used sidefile capacity exceeds

the sleep wait threshold.

The disk array does not report an SIM to the

host when the amount of used sidefile

capacity exceeds the sleep wait threshold.

Disable

The disk array performs the "Sleep" -

"Wait" command retry when excess of the

sleep wait threshold occurs.

The disk array does not perform the

"Sleep" - "Wait" command retry.

Level 2 Suspend does not occur when the

amount of used sidefile capacity exceeds

EnableLevel 1

Sleep

DisableLevel 2

Suspend

Level 2 Suspend does not occur when the

amount of used sidefile capacity exceeds

the level 2 threshold. And the disk array

does not report SCP-SCI to the host.

1,3

the level 2 threshold. And the disk array

reports SCP-SCI to the host.

(The disk array restricts the host I/O data

flow to prioritize the retention of XRC pair

status when the used sidefile capacity is

overloaded.)

The disk array does not perform the

"Sleep" - "Wait" command retry when

excess of the sleep wait threshold occurs.

DisableLevel 1

Sleep

Restrictions on usage 11

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 36 37

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