Term
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Definition
| Number of blocks written to single disk in RAID group before moving to the next disk. Default size is 64K. Size is configured on per LUN Basis; Size is set up when the LUN is created. |
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Term
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Definition
1.5% of space
520 Bytes:
512 bytes of user data
8 bytes of admin data |
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Term
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Definition
| Group of sequential elements starting with the first disk in RAID group and ending with the last, including any parity or mirrored elements |
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Term
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Definition
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Term
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Definition
| May include disks from any enclosure. Types may be mixed in an array. Each group has a unique number to identify it. The actual RAID type for a RAID Group is not set until the first LUN is created within the group. |
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Term
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Definition
| Building LUNs onto RAID Groups. May be up to 128 LUNs in a RAID Group. May be up to 2048 LUNs per CLARiiON Array. |
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Term
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Definition
| Owns the LUN. Manages the RAID protection of the LUN. Manages access to the LUN. |
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Term
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Definition
| Disk Numbers, RAID type, LUN #, element size |
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Term
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Definition
| Used to Trespass a LUN: If SP-A dies, then go to SP-B. Configures Host with multiple paths to LUN. Redirects I/O over surviving path if HBA, cable, or Switch fails. Dynamic load balances across HBA / fabric (not SP). |
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Term
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Definition
| Feature of Access Logix. Used to implement LUN Masking. Define the LUNs each host can access. Contains subset of LUNs grouped for access by one or more hosts and inaccessible to other hosts. Without them, all hosts can access all LUNs. Lives in PSM. |
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Term
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Definition
| Controls which hosts have access to a storage group |
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Term
| Initiator Registration Records |
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Definition
| Process through which the host accesses the array and provides information |
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Term
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Definition
| Number presented to teh host and the FLARE LUN number which is created during binding |
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Term
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Definition
| Use Navisphere Manager. Create 1 SG per server unless clustering. LUNS 1, 2, and 3 can be present in both SG 1 and SG 3 (clustering). ALU is automatically remapped to next HLU #. Has WWN, ALU, and HLU. |
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Term
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Definition
| takes WWPN and sees name of server. |
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Term
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Definition
| Connects hosts to storage groups. Assigns LUN to SP. |
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Term
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Definition
| Combines LUNs. May be Striped or concatenated. Supported only on CLARiiON CX family w/ Navisphere 6.5+. Should be same size, speed, and RAID group. |
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Term
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Definition
| If Storage Processor, Host Bus Adapter, cable or any I/O Path fails, ownership of LUN moves to surviving SP. Possible with PowerPath. |
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Term
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Definition
| Local Replication for CLARiiON. Logical point-in-time views of production information called snapshots. |
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Term
| Business Continuance Volumes (BCVs) |
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Definition
| Full image copies of production information |
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Term
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Definition
| maintains synchronous mirroring between 2 + CLARiiON systems. Supported by CX 400+ and FC4700. |
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Term
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Definition
| Allows incremental updates of a remote secondary image on CLARiiON. Supported by CX 400+ and FC4700. |
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Term
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Definition
| Manages data replication within a single storage system or between systems. Can use LUNs/volumes, snapshots, and Clones/BCVs as sources. Supported by CLAR / Sym. |
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