HP 3PAR Web Service API 1.3.1 Developer's Guide

Session Key Security
Because session keys allow access to the storage server, client applications should not display
session keys or otherwise make them visible to end users. Revealing a session key is similar to
revealing a password in that an unauthorized person who obtains a session key can use it to
access the storage server until the key is deleted.
Multiple Session Keys
A multi-threaded client application can use one session key in multiple threads concurrently.
However, the requested operations will be serialized by the server. When true concurrency is
needed, a client can create a session key for each concurrent thread.
Maximum Number of WSAPI Sessions
Starting with HP 3PAR OS 3.1.3, the WSAPI server uses a processing scheme that is distributed
across nodes and can handle a higher number of concurrent sessions.
The maximum number of WSAPI sessions that can be accommodated concurrently depends on
the number of nodes in the storage system, system memory, the location of the master and network
nodes, and other factors. For a two-node storage system over FC, for instance, the maximum
number of WSAPI sessions is 24; on an eight-node cluster, the maximum is 672. See Table 9 (page
40).
Table 9 Maximum WSAPI Sessions per Node
Total WSAPI
Sessions
Maximum Number
of Sessions per
NodeNumber of Nodes in ClusterStorage Model
24242HP 3PAR T-Class
36362HP 3PAR StoreServ 7200 Storage
36362HP 3PAR StoreServ 7400 Storage
1
36362HP 3PAR StoreServ 7450 Storage
1
48 to 72244HP 3PAR F-Class
72 to 108364HP 3PAR StoreServ 7400 Storage
72 to 108364HP 3PAR StoreServ 7450 Storage
1
96 to 144484HP 3PAR StoreServ 10400 Storage systems
(before December 2013)
192 to 288968HP 3PAR StoreServ 10400 Storage systems
(December 2013 and later)
576 to 672968HP 3PAR StoreServ 10800 Storage
1
The HP 3PAR StoreServ 7400 Storage and HP 3PAR StoreServ 7450 Storage systems can be configured with two or
four nodes. The two-node system can be upgraded to four nodes.
The maximum number of WSAPI sessions on a cluster depends on the following factors:
• The number of nodes in the cluster
• The maximum number of sessions per node
Two-node clusters:
Two nodes are considered a single unit, so the number of nodes included in the total
calculation of sessions is 1, and the total number of WSAPI sessions will be:
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40 Accessing the WSAPI