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发表于 1-7-2009 23:35:07
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回复 #2 ubuntuhk 的帖子
安装iSCSI协议规范来看应该不行, 其实COMSTAR的作用是为了同时支持多个存储协议。这里有一个视频demo:http://blogs.sun.com/sumitgupta/entry/comstar_zfs_demo_is_now
这段话我觉得把COMSTAR目的和功能描述的比较清楚:
The new software, part of the latest build of OpenSolaris, is affectionately called COMSTAR and boy is it the STAR of the storage COMmunication you want to be able to do with a storage server. Fibre Channel, SAS, iSCSI, iSER, OSD, you-name-it, if it's a storage communication protocol, COMSTAR handles it.
Now it may seem silly to think about putting a bunch of SAS/SATA drives in a box with a CPU and then just re-exporting them as SAS targets to hosts. What value does this have? Of course it's what you do in that storage server before you re-export them that make this a storage server and not just an enclosure. You want mirroring, disc scrubbing and automatic failover and repair - load up ZFS. You want remote replication - load up Availability Suite. You want to be able to diagnose bottlenecks and performance issues - load up DTrace. Then export the resulting highly available highly performant virtualized disks. |
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