| 12 | | * [wiki:rock/paper/PFS_HPC/NFS '''2.2.2''' 作者先舉 NFS 來介紹：] |
| 13 | | * '''2.2.3''' 作者第二個舉的是 '''Clustered NAS：''' |
| 14 | | * Clustered NAS systems were developed to make NAS systems more scalable and to give them more performance |
| 15 | | * Uses several filer heads instead of a single one. The filer heads are then connected to storage. |
| 16 | | * __'''Two Arch：'''__ |
| 17 | | 1. several file heads each have some storage assigned to them. |
| 18 | | * First approach is used by !NetApp (!NetApp-GX) |
| 19 | | 2. the filer heads are really gateways from the clients to a parallel file system. |
| 20 | | * filer heads communicate with the client using NFS over the client network but access the parallel file system on a private storage network. |
| 21 | | * allows the ClusterNAS to be scaled quite large because you can just add more gateways– which also increases aggregate performance because there are more NFS gateways. |
| 22 | | * Used by Isilon. And Panasas, IBM’s GPFS, and other parallel file systems when they are running in a NFS mode. |
| 23 | | * The problem is that you have limited performance to the client because you are using NFS as the communication protocol. Most of the Cluster NAS solutions use a single GigE connection so you are limited to about 90-100 MB/s at most to each client. |
| | 12 | * [wiki:rock/paper/PFS_HPC/NFS 2.2.2 作者先舉 NFS 來介紹：] |
| | 13 | * ['''wiki:rock/paper/PFS_HPC/Clustered_NAS 2.2.3''' 作者第二個舉的是 Clustered NAS：] |
