HDS-USP-高端存储维护试题.ppt

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * The Logic box of the DKC is divided into two sections. One section is located on the front side of the DKC, and the other section is located on the rear side. These two sections function as cluster 1 and cluster 2, respectively. Each cluster has a structure in which two sets of the CHAs, DKAs, caches, and CSW are installed symmetrically to the right and left. * * * * * * * * Universal Storage Platform supports four types of disk drives, these drives have a 2Gb/s fibre channel interface. The respective capacities of the disk drives are: 73GB/15k rpm 146GB/10k rpm 146GB/15k rpm (Future release) 300GB/10k rpm * Each have on board memory * * * * * * * * * * * * ( 更换磁盘步骤－－完成后不要忘记这一步 把SIM COMPLETE, MESSAGE灯才会灭 更换磁盘步骤－－完成后不要忘记这一步 更换磁盘步骤－－完成后不要忘记这一步 更换磁盘步骤－－完成后不要忘记这一步 * * * * * * * * * * * * The two types of frames in the Universal Storage Platform are: Disk Controller (DKC) frame: Each storage system has one DKC. The DKC consists of a logic box in which you install the channel adapters (CHA), disk adapters (DKA), cache memory, shared memory, and cache switch (CSW). In addition, the DKC consists of the Hard disk unit (HDU) box in which you install up to 128 HDDs. Disk Unit (DKU) frame: Depending on the customer requirements, you can have up to four DKUs. You can install up to 128 HDDs in DKC and up to 256 HDDs in each DKU. When you connect DKC with four DKUs, DKC can control up to 1152 HDDs. * * * * This graphic shows both the front and rear views of the Disk Controller. * * * * This graphic shows both the front and rear views of the Disk Unit. * * * * * * * * * * * * * * * * * * The performance of accessing the cache memory varies depending on the configuration of the cache and the CSW. The High Performance Cache Access model with maximum configuration, in which