IBM V7000 SAN Limitations Know and become an Expert

by Ravi Kumar Ankam · Published October 8, 2016 · Updated October 8, 2016

IBM V7000 SAN Limitations Know and Become an Expert. While configuring an SAN we should know about device model limitations because if your dong behind the Limitations it will not work.

IBM V7000 SAN Limitations Know and become an Expert

Property	Max. No’s	Remarks
System (Cluster) Properties
Control Enclosures per system (Cluster)	4	Each Control enclosure contain 2 node canisters
Nodes per system	8	Arranged as four I/O groups
Nodes per Fabric	64	Maximum number of SVC and V7000 nodes that can be present on the same Fibre Channel fabric, with visibility of each other
Fabrics per system	6	The number of counterpart Fibre Channel SANs which are supported – Up to 4 fabrics using native Fibre Channel Ports – Up to 2 fabrics using FCoE ports
Inter-cluster Partnerships per system	3	A system may partnered with up to three remote systems. No more than four systems may be in the same connected set.
Node Properties
Logins per node Fibre Channel Ports	512	Includes logins from server HBAs, disk controller ports, and node ports within the same system and node ports from remote systems.
iSCSI sessions per node	256	512 in IP failover mode (when partner node is unavailable)
Managed Disk Properties
Managed disks (MDisks) per system	4096	The maximum number of logical units which can be managed by a system, including internal arrays. This number also includes external MDisks which have not been configured into storage pools (managed disk groups)
Managed disks per storage pool (Managed disk group)	128
Storage Pools per system	128
Managed disk extent size	8192 MB
Capacity for an individual internal managed disk (array)	1 PB	No limit is imposed beyond the maximum number of drives per array limits. Maximum size is dependent on the extent size of the Storage Pool.
Capacity for an individual external managed disk	1 PB	External managed disks larger than 2 TB are only supported for certain types of storage systems. Maximum size is dependent on the extent size of the storage pool.
Total Storage Capacity manageable per system	32 PB	Maximum requires an extent size of 8192 MB to be used The limit represents the per system maximum of 2^22 extents
Volume (Virtual Disk) Properties
Volumes (VDisks) per system	8192	Maximum requires a system containing four control enclosures; refer to the volumes per I/O group limit below
Volumes per I/O group (volumes per caching I/O group)	2048
Volumes accessible per I/O group	8192
Thin-provisioned (space-efficient) volume copies per system	8192	No limit is imposed here beyond the volume copies per system limit
Compressed volume copies per system	800	Maximum requires a system containing four control enclosures; refer to the compressed volume copies per I/O group limit below
Compressed volume copies per I/O group	200
Volumes per storage	–	No limit is imposed beyond the volumes per system limit
Fully-allocated volume capacity	256 TB	Maximum size for an individual fully-allocated volume Maximum size is dependent on the extent size of the storage pool.
Thin-Provisioned (space-efficient) volume capacity	256 TB	Maximum size for an individual thin-provisioned volume. Maximum size is dependent on the extent size of the storage pool
Host mappings per system	20,000
Mirrored Volume (Virtual Disk) Properties
Copies per volume	2
Volume copies per system	8192
Total mirrored volume capacity per I/O group	1024 TB
Generic Host Properties
Host objects (IDs) per system	2048	A host object may contain both Fibre channel ports and iSCSI names
Host objects (IDs) per I/O group	512	Refer to the additional Fibre Channel and iSCSI host limits below
Volume mappings per host object	2048*	*This limit is 512 for Solaris OS
Total Fibre Channel ports and iSCSI names per system	8192
Total Fibre Channel ports and iSCSI names per I/O group	2048
Total Fibre channel ports and iSCSI names per host object	512
Fibre Channel Host Properties (including host attached using FCoE)
Fibre channel hosts per system	2048
Fibre channel host ports per system	8192
Fibre Channel hosts per I/O group	512
Fibre Channel host ports per I/O group	2048
Fibre channel hosts ports per host object (ID)	512
iSCSI Host Properties
iSCSI hosts per system	1024
iSCSI hosts per I/O group	256
iSCSI names per host object (ID)	256
iSCSI names per I/O group	256
Copy Services Properties
Remote Copy (Metro Mirror & Global mirror) relations per system	8192	This can be either Global mirror or metro mirror relationships.
Remote copy relationships per consistency group	–	No limit is imposed beyond the Remote copy relationships per system
Remote copy consistency groups per system	256
Total Metro Mirror & Global Mirror volume capacity per I/O group	1024 TB	This limit is the total capacity for all master and auxiliary volumes in the I/O group
Total number of global mirror with change volumes relationships per system	256
Flash copy mappings per system	4096
Flash copy targets per source	256
Flash copy mappings per consistency group	512
Flash copy consistency groups per system	127
Total Flash copy volume capacity per I/O group	1024 TB
IP Partnership Properties
Inter-cluster IP Partnerships per system	1	A system may be partnered with up to three remote systems. A maximum of one of those can be IP and the other two are FC
I/O groups per system	2	The nodes from a maximum of two I/O groups per system can be used for IP partnership
Inter site link per IP Partnership	2	A maximum of two inter site link can be used between two IP partnership sites
Ports per node	1	A maximum of one port per node can be used for IP partnership
Internal Storage Properties
SAS chains per control enclosure	2
Enclosures per SAS chain	5	Up to 5 expansion enclosures on SAS port 1 and up to 4 expansion enclosures on SAS port 2
Expansion enclosures per control enclosure	9
Drives per I/O group	240
Drives per system	960	Maximum requires a system containing four control enclosures, each with the maximum number of expansion enclosures
Min-Max drives per enclosure	0-12 Or 0-24	Limit depends the enclosure model
RAID arrays per system	128
Min-Max member drives per RAID-0 array	1-8
Min-Max member drives per RAID-1 array	2-2
Min-Max member drives per RAID-5 array	3-16
Min-Max member drives per RAID-6 array	5-16
Min-Max member drives per RAID-10 array	2-16
Hot spare drives	–	No limit is compulsory
External Storage System Properties
Storage system WWNs per system (cluster)	1024
Storage system WWPNs per system (cluster)	1024
WWNNs per storage system	16
WWPNs per WWNN	16
LUNs (managed disks) per storage system	–	No limit is imposed beyond the managed disks per system limit
System and User Management Properties
User accounts per system	400	Includes the default user accounts
User groups per system	256	Includes the default user groups
Authentication servers per system	1
NTP servers per system	1
iSNS servers per system	1
Concurrent open SSH sessions per system	10
Event Notification Properties
SNMP servers per system	6
Syslog servers per system	6
Email (SMTP) servers per system	6	Email Servers are used in turn until the email is successfully sent
Email Users (recipients)per system	12
LDAP servers per system	6