HP 3PAR StoreServ 7450 4-node HP 3PAR CIM API Programming Reference (OS 3.1.2 - Page 174

OneHost, Cache, ZeroDetection, BitValues {DisallowStaleSnapshot, AllowStaleSnapshot

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"DisallowStaleSnapshot - When copy-on-write fails, don't write to r/w " " base so that r/o snapshots remain valid/consistent with r/w " " base. This means failures to update snapshot will be " " considered a failure to write to the base volume as well. " "AllowStaleSnapshot - When copy-on-write fails, allow write to r/w base " " to succeed, but snapshot becomes invalid or stale. This means " " failures to update snapshot will not affect the write to the " " base volume, but the snapshot will then be considered invalid. " " This is the default setting. " "System - Volume is intended to be used for internal system purposes." "NoSystem - Volume is not intended to be used for internal system " " purposes." "OneHost - This constrains the export of a volume to one host or " " one host cluster (when cluster names may be used as a " " host name). Unless the volume is under the complete " " control of a cluster aware application, multiple hosts " " (with NoOneHost policy) will corrupt each other's data. " "NoOneHost - This policy should only be used when exporting a volume to " " multiple hosts for use by a cluster-aware application, " " or if your shop uses 'port presents' VLUNs. " " This is the default policy setting." "Cache - enable caching for VV (default)." "NoCache - disable all caching for the VV plus read ahead." "ZeroDetect - Check If incoming data is zero. If so, reclaim the space." "NoZeroDetect - No need to check if incoming data is zero." "Possible value is a combination of following values: " " 0x80000000 - DisallowStaleSnapshot" " 0x40000000 - AllowStaleSnapshot" " 0x20000000 - System" " 0x10000000 - NoSystem" " 0x02000000 - OneHost" " 0x01000000 - NoOneHost" " 0x00800000 - Cache" " 0x00400000 - NoCache" " 0x00200000 - ZeroDetection" " 0x00100000 - NoZeroDetection"), BitMap { "31","30","29","28","25","24","23","22","21","20" }, BitValues {"DisallowStaleSnapshot", "AllowStaleSnapshot", "System", "NoSystem", "OneHost", "NoOneHost", "Cache", "NoCache", "ZeroDetection", "NoZeroDetection"}] uint32 Policy; [Description ( "Define the VV geometry sectors_per_track value that is " "reported to the hosts via the SCSI mode pages. The valid " "range is from 4 to 8192 and the default value is 304.\n"), MinValue ( 4 ), MaxValue ( 8192 )] uint32 GeometrySectorsPerTrack = 304; [ Description ( "Define the VV geometry heads_per_cylinder value that is " "reported to the hosts via the SCSI mode pages. The valid " "range is from 1 to 1024 and the default value is 8.\n"), MinValue ( 1 ), MaxValue ( 1024 )] uint32 GeometryHeadsPerCylinder = 8; [ Description ( "Defines the sector size presented to the host for this virtual volume. " "This must be a power of 2 from 512 to 16384, so the valid inputs are " "512, 1024, 2048, 4096, 8192, and 16384. The default size is 512.\n"), ValueMap {"512", "1024", "2048", "4096", "8192", "16384"}, Values {"512", "1024", "2048", "4096", "8192", "16384"} ] uint32 GeometrySectorSize = 512; [Description ( 174 Managed Object Format Files

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"DisallowStaleSnapshot - When copy-on-write fails, don't write to r/w "
"
base so that r/o snapshots remain valid/consistent with r/w "
"
base. This means failures to update snapshot will be "
"
considered a failure to write to the base volume as well. "
"AllowStaleSnapshot - When copy-on-write fails, allow write to r/w base "
"
to succeed, but snapshot becomes invalid or stale. This means "
"
failures to update snapshot will not affect the write to the "
"
base volume, but the snapshot will then be considered invalid. "
"
This is the default setting. "
"System - Volume is intended to be used for internal system purposes."
"NoSystem - Volume is not intended to be used for internal system "
"
purposes."
"OneHost - This constrains the export of a volume to one host or "
"
one host cluster (when cluster names may be used as a "
"
host name).
Unless the volume is under the complete "
"
control of a cluster aware application, multiple hosts "
"
(with NoOneHost policy) will corrupt each other's data. "
"NoOneHost - This policy should only be used when exporting a volume to "
"
multiple hosts for use by a cluster-aware application, "
"
or if your shop uses 'port presents' VLUNs. "
"
This is the default policy setting."
"Cache
- enable caching for VV (default)."
"NoCache
- disable all caching for the VV plus read ahead."
"ZeroDetect - Check If incoming data is zero. If so, reclaim the space."
"NoZeroDetect - No need to check if incoming data is zero."
"Possible value is a combination of following values: "
"
0x80000000 - DisallowStaleSnapshot"
"
0x40000000 - AllowStaleSnapshot"
"
0x20000000 - System"
"
0x10000000 - NoSystem"
"
0x02000000 - OneHost"
"
0x01000000 - NoOneHost"
"
0x00800000 - Cache"
"
0x00400000 - NoCache"
"
0x00200000 - ZeroDetection"
"
0x00100000 - NoZeroDetection"),
BitMap { "31","30","29","28","25","24","23","22","21","20" },
BitValues {"DisallowStaleSnapshot", "AllowStaleSnapshot",
"System", "NoSystem",
"OneHost", "NoOneHost", "Cache", "NoCache", "ZeroDetection",
"NoZeroDetection"}]
uint32 Policy;
[Description (
"Define the VV geometry sectors_per_track value that is "
"reported to the hosts via the SCSI mode pages.
The valid "
"range is from 4 to 8192 and the default value is 304.\n"),
MinValue ( 4 ), MaxValue ( 8192 )]
uint32 GeometrySectorsPerTrack = 304;
[ Description (
"Define the VV geometry heads_per_cylinder value that is "
"reported to the hosts via the SCSI mode pages.
The valid "
"range is from 1 to 1024 and the default value is 8.\n"),
MinValue ( 1 ), MaxValue ( 1024 )]
uint32 GeometryHeadsPerCylinder = 8;
[ Description (
"Defines the sector size presented to the host for this virtual volume. "
"This must be a power of 2 from 512 to 16384, so the valid inputs are "
"512, 1024, 2048, 4096, 8192, and 16384.
The default size is 512.\n"),
ValueMap {"512", "1024", "2048", "4096", "8192", "16384"},
Values {"512", "1024", "2048", "4096", "8192", "16384"} ]
uint32 GeometrySectorSize = 512;
[Description (
174
Managed Object Format Files