raid5总容量计算(n-1)*最小盘容量RAID0：N块盘组成，逻辑容量为N块盘容量之和；RAID1：两块盘组成，逻辑容量为一块盘容量；RAID3：N+1块盘组成，逻辑容量为N块盘容量之和；RAID5：N块盘组成，逻辑容量为N-1块盘容量之和；RAID6：N块盘组成，逻辑容量为N-2块盘容量之和；RAID10：2N块盘组成，逻辑容量为N块盘容量之和；RAID50：假每个RAID5由N块盘组成，共有M个RAID5组成该RAID50，则逻辑容量为(N-1)*M块盘容量之和。

[root@rac1 iscsi]# ssh [email protected]@192.168.40.125's password: IBM_Storwize:storage:cliadmin>IBM_Storwize:storage:cliadmin>IBM_Storwize:storage:cliadmin>helpactivatefeature - Activates a function using a trial period or license key.addhostiogrp - Maps I/O groups to a host object.addhostport - Adds worldwide port names (WWPNs) or iSCSI names to a host object.addvdiskaccess - Adds to the set of I/O groups in which a Volume can be made accessible to hosts.addvdiskcopy - Adds a copy to an existing volumeapplydrivesoftware - Upgrades drives.applysoftware - Updates the system code.cancellivedump - Cancels a livedump.catauditlog - Displays the in-memory contents of the audit log.cfgportip - Assigns an IP address to each node canister ethernet port for iSCSI I/O.charray - Changes the attributes of an array.charraymember - Changes an array member's attributes, or swaps a member of a RAID array.chauthservice - Configures the remote authentication service of the system.chcontroller - Changes the attributes of a controller.chcurrentuser - Changes the attributes of the current user.chdrive - Change the attributes of a drive.chemail - Sets or changes contact information for email event notifications.chemailserver - Changes the attributes of an email server.chemailuser - Changes the attributes for an email recipient.chenclosure - Changes enclosure properties.chenclosurecanister - Changes the properties of an enclosure canister.chenclosureslot - Changes the properties of an enclosure slot.cherrstate - Marks an unfixed error as fixed or a fixed error as unfixed.cheventlog - Changes events in the event log.chfcconsistgrp - Changes the attributes of a FlashCopy consistency group.chfcmap - Changes the attributes of a FlashCopy mapping.chhost - Changes the attributes of a host object.chiogrp - Changes the name and other attributes of an I/O group.chldap - Changes the system-wide Lightweight Directory Access Protocol (LDAP) configuration.chldapserver - Changes a Lightweight Directory Access Protocol (LDAP) server.chmdisk - Changes the attributes of a managed disk.chmdiskgrp - Changes the attributes of a storage pool.chnodecanister - Changes the name and other attributes of a node canister.chnodecanisterhw - Updates the hardware configuration for a node canister.chpartnership - Changes the partnership bandwidth between the local and remote system.chquorum - Changes the quorum association.chrcconsistgrp - Changes the attributes of a Metro Mirror or Global Mirror consistency groupchrcrelationship - Changes the attributes of a Metro Mirror or Global Mirror relationship.chsecurity - Changes security settings.chsnmpserver - Changes the attributes of an SNMP server.chsyslogserver - Changes the attributes of a syslog server.chsystem - Changes the attributes of an existing system.chsystemip - Changes the IP configuration parameters for the system.chuser - Changes the attributes of a user.chusergrp - Changes the attributes of a user group.chvdisk - Changes the attributes of a volume.cleardumps - Cleans the dump directories on a specified node canister.clearerrlog - Clears all entries from the event log.cpdumps - Copies dump files to the configuration node canister from another node canister.deactivatefeature - Deactivates a function.detectmdisk - Detects new managed disks and rebalances managed disk access.dumpallmdiskbadblocks - Dumps bad block counts to a dump.dumpauditlog - Resets or clears the contents of the in-memory audit log.dumperrlog - Dumps the contents of the event log to a text file.dumpmdiskbadblocks - Writes managed disk bad block counts and locations to a dump.enablecli - Enables the CLI for a recovered system.expandvdisksize - Expands the size of a volume by a given capacity.finderr - Finds the highest severity unfixed error in the event log.includemdisk - Includes a managed disk that has been excluded by the system.lsarray - Displays array managed diskslsarrayinitprogress - Displays the progress of array background initialization.lsarraylba - Displays an array logical block address (LBA) for a drive and LBA.lsarraymember - Displays the member drives of one or more array managed disks.lsarraymembergoals - Displays the spare goals for member drives of one or more array members.lsarraymemberprogress - Displays array member background process status.lsarraysyncprogress - Displays how synchronized a RAID array is.lscontroller - Displays the controllers visible to the system.lscopystatus - Displays whether any file copies are currently in progress.lscurrentuser - Displays the name and role of the logged-in user.lsdependentvdisks - Displays which volumes will go offline if you remove a piece of hardware from the system.lsdiscoverystatus - Displays whether a discovery operation is in progress.lsdrive - Displays configuration information and drive VPD.lsdrivelba - Maps array managed disk logical block address (LBA) to a set of drives.lsdriveprogress - Displays the progress of various drive tasks.lsdriveupgradeprogress - Displays the progress of drive firmware upgrade.lsdumps - Displays files in a dumps directory on one of the node canisters in the system.lsemailserver - Displays the email servers configured on the system.lsemailuser - Displays email event notification settings for email recipients.lsenclosure - Displays a summary of the enclosures.lsenclosurebattery - Displays information about the batteries in the enclosure PSUs.lsenclosurecanister - Displays status for each canister in an enclosure.lsenclosurechassis - Displays information about the enclosure chassis.lsenclosurepsu - Displays information about each power-supply unit (PSU) in the enclosure.lsenclosureslot - Displays information about each drive slot in the enclosure.lsenclosurestats - Displays enclosure statistics.lseventlog - Displays system event log information.lsfabric - Displays a report of the Fibre Channel connectivity between node canisters, controllers and hosts.lsfcconsistgrp - Displays the FlashCopy consistency groups on the system.lsfcmap - Displays the FlashCopy mappings on the system.lsfcmapcandidate - Displays volumes available to create FlashCopy mappings.lsfcmapdependentmaps - Displays the FlashCopy mappings that are dependent on a specified mapping.lsfcmapprogress - Displays the progress of the background copy of a FlashCopy mapping.lsfcportcandidate - Displays unconfigured, logged-in SAS host bus adapter (HBA) ports.lsfeature - Displays available features.lsfreeextents - Displays the number of free extents available on a managed disk.lshbaportcandidate - Displays unconfigured, logged-in host bus adapter (HBA) ports.lshost - Displays the hosts visible to the system.lshostiogrp - Displays the I/O groups associated with a specified host.lshostvdiskmap - Displays volumes that are mapped to a given host.lsiogrp - Displays the I/O groups on the system.lsiogrpcandidate - Displays I/O groups that can have node canisters added to them.lsiogrphost - Displays the hosts mapped to an I/O group.lsiscsiauth - Displays the Challenge Handshake Authentication Protocol (CHAP) secret configured for authenticating an entity to the system.lsldap - Displays the system-wide Lightweight Directory Access Protocol (LDAP) configuration.lsldapserver - Displays all configured Lightweight Directory Access Protocol (LDAP) servers.lslivedump - Displays the livedump state of a node canister.lsmdisk - Displays the managed disks visible to the system.lsmdiskcandidate - Displays unmanaged disks by ID.lsmdiskextent - Displays the extent allocation between managed disks and volumes.lsmdiskgrp - Displays the storage pools on the system.lsmdisklba - Displays managed disk and logical block address (LBA) for a volume LBA.lsmdiskmember - Displays the volumes using extents on the specified managed disks.lsmetadatavdisk - Displays the information for the metadata volume.lsmigrate - Displays the progress of current data migration operations.lsnodecanister - Displays the node canisters that are part of the system.lsnodecanisterhw - Displays the hardware configuration of node canisters in the system.lsnodecanisterstats - Displays node canister statistics.lsnodecanistervpd - Displays the vital product data (VPD) for each node canister.lspartnership - Displays the current systems partnered with the local system.lspartnershipcandidate - Displays systems available for setting up a partnership with.lsportfc - Displays information about the Fibre Channel I/O ports.lsportip - Displays the iSCSI IP addresses assigned for each port on each node canister in the system.lsportsas - Displays information about the SAS ports.lsportusb - Displays information about the USB ports used for encryption.lsquorum - Displays the managed disks or drives the system is currently using to store quorum data.lsrcconsistgrp - Displays the Metro or Global Mirror consistency on the system.lsrcrelationship - Displays the Metro or Global Mirror relationships on the system.lsrcrelationshipcandidate - Displays volumes available to form Metro Mirror or Global Mirror relationships.lsrcrelationshipprogress - Displays the progress of the background copy of a Metro Mirror or Global Mirror relationship.lsrepairsevdiskcopyprogress - Displays the repair progress for space-efficient volume copies.lsrepairvdiskcopyprogress - Displays the progress of volume repairs and validations.lsrmvdiskdependentmaps - Displays all mappings that must be stopped for a volume to be deleted.lsroute - Displays the IP routing table.lssasfabric - Displays which canisters are visible to a node canister, and the order of these canisters.lssasportcandidate - Displays unconfigured, logged-in FC host bus adapter (HBA) ports.lssecurity - Internal use only.lssevdiskcopy - Displays the space-efficient copies of volumes.lssnmpserver - Displays the SNMP servers configured on the system.lssyslogserver - Displays the syslog servers configured on the system.lssystem - Displays the local system.lssystemip - Displays the system management IP addresses configured for each port.lssystemstats - Displays the most recent values or a history of canister statistics.lstimezones - Displays the time zones that are available on the system.lsupdate - Displays information about system, enclosure, and drive update.lsuser - Displays the users created on the system.lsusergrp - Displays the user groups created on the system.lsvdisk - Displays the volumes on the system.lsvdiskaccess - Displays which IO groups volumes are accessible through.lsvdiskcopy - Displays volume copy information.lsvdiskdependentmaps - Displays FlashCopy mappings with target volumes dependent upon data held on a specified volume.lsvdiskextent - Displays the managed disk extents that are provided for volumes.lsvdiskfcmapcopies - Displays all mappings with a target volume containing a valid copy of a volume.lsvdiskfcmappings - Displays the FlashCopy mappings to which a volume belongs.lsvdiskhostmap - Displays volume to host mappings.lsvdisklba - Displays the volume and logical block address (LBA) for a managed disk LBA.lsvdiskmember - Displays the managed disks that are members of a volume.lsvdiskprogress - Displays the progress during new volume formatting.lsvdisksyncprogress - Displays the progress of volume copy synchronization.migrateexts - Migrates extents from one managed disk to another.migratevdisk - Migrates an entire volume from one storage pool to another.mkarray - Creates a managed disk array and adds it to a storage pool.mkemailserver - Creates an email server.mkemailuser - Adds an email recipient of event and inventory notifications.mkfcconsistgrp - Creates a new FlashCopy consistency group.mkfcmap - Creates a new FlashCopy mapping.mkfcpartnership - mkfcpartnershipmkhost - Creates a logical host object.mkippartnership - mkippartnershipmkldapserver - Creates a Lightweight Directory Access Protocol (LDAP) server.mkmdiskgrp - Creates a storage pool.mkmetadatavdisk - Creates one metadata volume from the storage pool.mkpartnership - Creates a one-way Metro Mirror or Global Mirror partnership between the local and remote system.mkrcconsistgrp - Creates a Metro Mirror or Global Mirror consistency group.mkrcrelationship - Creates a new Metro Mirror or Global Mirror relationship.mksnmpserver - Creates an SNMP server to receive notifications.mksyslogserver - Creates a syslog server to receive notifications.mkuser - Creates a local or a remote user to access a system.mkusergrp - Creates a user group.mkvdisk - Creates a sequential, striped, or image mode volume.mkvdiskhostmap - Creates a mapping between a volume and a host.movevdisk - Changes the caching I/O group of a Volume.ping - Diagnoses IP configuration.preplivedump - Reserves system resources required for a livedump.prestartfcconsistgrp - Prepares a FlashCopy consistency group for starting.prestartfcmap - Prepares a FlashCopy mapping for starting.recoverarray - Recovers a corrupt array.recoverarraybysystem - Recovers a corrupt array.recovervdisk - Acknowledges volume data loss and brings the volume back online.recovervdiskbyiogrp - Acknowledges data loss for all volumes in the specified I/O group and brings the volumes back online.recovervdiskbysystem - Acknowledges data loss for all volumes in the system and brings the volumes back online.repairsevdiskcopy - Repairs the metadata on a space-efficient volume.repairvdiskcopy - Detects and corrects any volume copies that are not identical.resetleds - Simultaneously switches off all LEDs in the system.rmarray - Removes a managed disk array from the configuration.rmemailserver - Deletes an email server.rmemailuser - Remove an email recipient from your system.rmfcconsistgrp - Deletes a FlashCopy consistency group.rmfcmap - Deletes an existing FlashCopy mapping.rmhost - Deletes a host object.rmhostiogrp - Deletes mappings between I/O groups and a host object.rmhostport - Deletes worldwide port names (WWPNs) or iSCSI names from a host object.rmldapserver - Deletes a Lightweight Directory Access Protocol (LDAP) server.rmmdisk - Deletes a managed disk from a storage pool.rmmdiskgrp - Deletes a storage pool.rmmetadatavdisk - Removes the metadata volume from the storage pool.rmnodecanister - Deletes a node canister from the system.rmpartnership - Removes a Metro Mirror or Global Mirror partnership on one system.rmportip - Removes an iSCSI IP address from a node canister ethernet port.rmportip_tms - Removes properties of an IP port.rmrcconsistgrp - Deletes a Metro Mirror or Global Mirror consistency group.rmrcrelationship - Deletes a Metro Mirror or Global Mirror relationship.rmsnmpserver - Delete an SNMP server.rmsyslogserver - Deletes a syslog server.rmuser - Deletes a user.rmusergrp - Deletes a user group.rmvdisk - Deletes a volume.rmvdiskaccess - Deletes from the set of I/O groups in which a Volume can be made accessible to hosts.rmvdiskcopy - Removes a volume copy.rmvdiskhostmap - Deletes a volume-to-host mapping.sainfo - Displays service action views.satask - Performs service action tasks.sendinventoryemail - Sends an inventory email to all recipients enabled to receive inventory email notifications.setdisktrace - Sets a list of disks of a given type to include in a disk trace.setlocale - Changes the locale setting and command output to the chosen language.setpwdreset - Views or changes the status of the password-reset feature.setsystemtime - Sets the time for the system.settimezone - Sets the time zone for the system.settrace - Sets options for tracing I/O operations.showtimezone - Displays the current time zone settings for the system.shrinkvdisksize - Reduces the size of a volume by the specified capacity.splitvdiskcopy - Creates a separate volume from a synchronized copy of a mirrored volume.startemail - Activates the email and inventory notification function.startfcconsistgrp - Starts a FlashCopy consistency group.startfcmap - Starts a FlashCopy mapping.startrcconsistgrp - Starts the Metro Mirror or Global Mirror consistency group copy process.startrcrelationship - Starts the Metro Mirror or Global Mirror relationship copy process.startstats - Changes the interval at which per-node canister statistics are collected.starttrace - Starts tracing I/O operations.stopemail - Stops the email and inventory notification function.stopfcconsistgrp - Stops all processing associated with a FlashCopy consistency group.stopfcmap - Stops all processing associated with a FlashCopy mapping.stoprcconsistgrp - Stops the copy process for a Metro Mirror or Global Mirror consistency group, or enables write access to the secondary volumes in the group.stoprcrelationship - Stops the copy process for a Metro Mirror or Global Mirror stand-alone relationship, or enables write access to a consistent secondary volume.stopsystem - Shuts down a single node canister or the entire system.stoptrace - Stops tracing I/O operations for the specified disk type.svc_livedump - Triggers a livedump of the system.svc_snap - Collects log files used by support for troubleshooting.svcconfig - Recovers, restores, or creates a backup of the system configuration.switchrcconsistgrp - Reverses the roles of primary and secondary volumes in a Metro Mirror or Global Mirror consistency group.switchrcrelationship - Reverses the roles of primary and secondary volumes in a stand-alone Metro Mirror or Global Mirror relationship.testemail - Sends a test email notification to one user or to all users of the email notification function.testldapserver - Tests a Lightweight Directory Access Protocol (LDAP) server.triggerdrivedump - Collects support data from a disk drive.triggerenclosuredump - Forces the specified enclosure or enclosures to dump data.triggerlivedump - Captures a livedump to the internal disk on the node canister.IBM_Storwize:storage:cliadmin>IBM_Storwize:storage:superuser>sainfo lsservicenodes panel_name cluster_id       cluster_name node_id node_name relation node_status error_data01-1       000000C020437DBE storage      2       node2     local    Active01-2       000000C020437DBE storage      1       node1     partner  Active