ETERNUS SF Storage Cruiser 14.0 User's Guidefor Virtual Storage Conductor

D.1 Virtual Storage Resources

The following table lists the limit values for virtual storage resources.

Table D.1 Limit values for virtual storage resources

Item to be limited	Limit value	Description
Max number of virtualization switches	128	Number of virtualization switches that one admin server can manage.
Number of virtualization switches in redundant configuration	2	Number of virtualization switches when one Virtual Storage Conductor has a redundant configuration.
Max number of virtual storage pools	128	Multiple virtual storage pools created for each Virtual Storage Conductor (single virtualization switch or virtualization switch in redundant configuration) are all managed on the admin server. This limit value is the maximum number of virtual storage pools that one admin server can manage.
Max number of virtual enclosures	1024	Multiple virtual enclosures created for each Virtual Storage Conductor (single virtualization switch or virtualization switch in redundant configuration) are all managed on the admin server. This limit value is the maximum number of virtual enclosures that one admin server can manage.
	240	This limit value is the number of virtual enclosures that can be created and associated with a single virtual switch group.
Maximum physical disk size	2TB-512B	The maximum registerable size of physical disks is a value found by reducing 512B (byte) from 2TB (terabyte).
Max number of physical disks	65535	Total number of physical disks that can be registered in all virtual storage pools that one admin server can manage.
	16384	Total number of physical disks that can be registered to one virtualization switch
Max number of virtual disks	128	This limit value applies to each port of the virtualization switch connected to the host bus adapter (HBA). When a virtual disk is distributed among multiple virtual targets, the total number applies.
	2048	Maximum number of virtual disks that can be created for each Virtual Storage Conductor (single virtualization switch or virtualization switch in redundant configuration)
Max size of virtual disk	2097151MB	This limit value is obtained by subtracting 1MB from 2TB.
Minimum size of virtual disk	1MB	The minimum size of a virtual disk is 1MB.
Max number of virtual targets	32	This limit value applies to each port of the virtualization switch that is connected to the host bus adapter (HBA).
	32	The values on the left are applicable to each virtualization switch in one virtual enclosure.
	240	This limit value applies to each virtualization switch.
Max number of physical disks configuring virtual disk	16	One virtual disk can be created from multiple physical disks. This limit value is the maximum number of physical disks that configure the virtual disk.
Max number of extents of physical disks configuring virtual disk	16	This limit value is the maximum number of extents (total number of extents of all physical disks) of physical disks that configure the virtual disk. When one physical disk is not used, this number is "1". Thus, when no physical disks are used, the maximum number of extents is equal to the number of physical disks.
Number of multi-paths of virtual disk	2	Each physical connection between the server and virtualization switch becomes an individual path.
Max copy multiplicity	128	The maximum number of times multiple migrations or replications can be performed simultaneously using one virtualization switch group (redundancy configuration).
	4	The maximum number of times multiple replications can be performed using one virtual disk that contains the copy source.
Max-Throttle	40	The value based on Max-Throttle specification for the channel adapter (CA) where the physical disk that constitutes a virtual disk is installed The storage type is GR, ETERNUS2000, ETERNUS3000, or ETERNUS6000.
	256	The value based on Max-Throttle specification for the channel adapter (CA) where the physical disk that constitutes a virtual disk is installed The storage type is ETERNUS4000 or ETERNUS8000.
Maximum number of copy security groups	1024	This limit value is the maximum number of copy security groups that can be created on one admin server.
Number of virtual enclosures that can be registered per copy security group	1024	This limit value is the maximum number of virtual enclosures that can be registered in one copy security group.
Number of copy security groups that can be registered per virtual enclosure	1024	This limit value is the maximum number of copy security groups that can be registered for one virtual enclosure.