【正文】 rage space (virtual space 1 disk) 1 – 21 Reconstruction ?After an original volume bees inaccessible, this is the process by which data is regenerated and moved (migrated) to other storage in the disk group ?Occurs after disk failure ? Userwritten virtual disk blocks are reconstructed on remaining members of RSS and disk group ? Disk group is leveled ? All VRAID0 virtual disks are inoperative ?Always allow reconstruction to plete ?As soon as reconstruction has pleted, replace each failed disk ?Controller event log indicates Missing ? Reconstructing 1 – 28 Rev. – HP Restricted Hosts and LUNs ? A host is a collection of host bus adapters that reside in the same (virtual) server ? A LUN is a virtual disk presented to one or multiple hosts ? Rules for hosts, connections, and LUNs ? A maximum of 256 hosts ? A maximum of 1,024 Fibre Channel Adapter connections ? A maximum of 256 LUNs on any one Fibre Channel Adapter ? A maximum of 8,192 presentations of LUNs to hosts ? Examples: ? 1 LUN presented to 1 host = 1 presentation ? 1 LUN presented to 256 hosts = 256 presentations ? 256 LUNs presented to 1 host each = 256 presentations 1 – 29 Rev. – HP Restricted HSV2x0 controller identification by host port ? Last character of the port WWN ? Controller A ? Port 1: 8 ? Port 2: 9 ? Port 3, A ? Port 4: B ? Controller B ? Port 1: C ? Port 2: D ? Port 3, E ? Port 4: F 8 9 A B FP1 FP2 MP2 DP1B DP2B DP1A DP2A MP1 FP3 FP4 C D E F HSV210 Controller A Controller B C D FP1 FP2 MP2 DP1B DP1A 8 9 MP1 HSV200 Controller A Controller B 14 – 1819 Rev. – HP Restricted HSV300 controller identification by host port ? Last character of the port WWN ? Controller 1, host port 1: 8 ? Controller 1, host port 2: 9 ? Controller 2, host port 1: C ? Controller 2, host port 2: D C D 8 9 Controller 1 Controller 2 FP1 FP2 DP1B DP1A 14 – 19 Rev. – HP Restricted HSV4x0 controller identification by host port ? Uses same numbering as HSV210 ? Controller A ? Port 1: 8 ? Port 2: 9 ? Port 3: A ? Port 4: B ? Controller B ? Port 1: C ? Port 2: D ? Port 3: E ? Port 4: F FP1 FP2 MP2 DP1A DP2A MP1 FP3 FP4 DP3A DP1B DP2B DP3B FP1 FP2 MP2 DP1A DP2A DP1B DP2B MP1 FP3 FP4 HSV400 HSV450 14 – 20 SSSU description ?What is the SSSU? ? Command line application that allows configuration and control of the controllers and storage system ? Allows plex and repetitious configurations to be scripted and executed ? Allows you more flexibility than Command View EVA ?Configuration ? SSSU is installed on management server with the Command View EVA master installer or on a host with access to Command View EVA ? Communicates using TCP/IP with Command View EVA running on the management server 15 – 2 Terminology (1 of 2) ? System — Controller or controller pair that is treated conceptually as one controller. In Command View EVA, this is the name you give to the initialized storage system. ? Disk — Physical storage device (disk drive) ? Disk group — Collection of disks from which storage is created ? Folder — A logical anization of objects ? Host — A system that has data path access to the virtual disk through a LUN defined on the system ? LUN — Hostaccessible presentation of storage on the system ? Manager — Command View EVA management server that controls configuration of the storage system 15 – 3 Rev. – HP Restricted Terminology (2 of 2) ?Controller — Controller enclosure ?Storage — A virtual disk that may may be configured as VRAID0, VRAID1, VRAID5, or VRAID6 for data storage ?Spare policy — Disk failure protection level (None, Single, and Double) 15 – 3 Rev. – HP Restricted Common configuration mands ?SELECT — Selects Command View EVA server or a storage system ?ADD — Creates different entities within the EVA ?SET — Changes properties of storage entities and resets existing storage settings and application options ?DELETE — Removes different entities from the EVA ?LS — Displays information about various elements in the currently selected storage system 15 – 910 Rev. – HP Restricted Commands used for generating configuration files ? These mands are useful when generating configuration files to use for later recreation of storage systems ?FILE ?CAPTURE CONFIGURATION ?CAPTURE VALIDATE 15 – 11 FILE mand ? Causes the current mode of input to suspend ?Redirects the scripting utility to accept input from the specified file ?The end of the file, or an EXIT mand in the specified file, causes SSSU to accept input from the previous input source ?FILE mands can be nested Example FILE FILE d:\scripts\snapshots\ C:\sssu “file ” 15 – 11 CAPTURE CONFIGURATION mand (1 of 3) ?Interrogates the currently selected storage system and creates five SSSU script files ?Output is to the console unless a file is specified ? Given a file name, _StepXX is appended after the file name and before the extension, where ? XX is the restore step name, which is 1A, 1B, 1C, 2 and 3 ?Use these scripts to recreate the storage system’s configuration, including all of the disk groups, folders, hosts, virtual disks, and LUNs ?Configuration is saved, data is not ?Do not reconfigure the array while the mand is executing 15 – 11 CAPTURE CONFIGURATION mand (2 of 3) ? Example: CAPTURE CONFIGURATION creates the following file names ? ? ? ? ? 15 – 12 CAPTURE CONFIGURATION mand (3 of 3) ? Description of script files ?Step1A script creates a basic system that exhibits no DR Vdisks or groups. Note: Use only this script to recreate nonDR configurations. ?Step1B script creates all source Vdisks used in DR gr