儲存產(chǎn)品暨產(chǎn)業(yè)基本概要-xxxx-在線瀏覽
2025-02-16 13:32本頁面
【正文】 ’,B’) A Disk 2 P(A”,B”) A’ B Disk 3 RAID3 RAID5 One Drive Failed One Drive Failed A” A’ A Disk 1 B” B’ B Disk 2 P(A”,B”) P(A’,B’) P(A,B) Disk 3 A” B’ P(A,B) Disk 1 B” P(A’,B’) A Disk 2 P(A”,B”) A’ B Disk 3 RAID3 RAID5 Rebuild Data Rebuild Data Infortrend Internal Confidential 28 Terminologies – Physical Logical Drives Physical Drives Logical Drives (LD) (RAID Disk Group) LD 0 LD 1 LD 2 Global Spare Local Spare Infortrend Internal Confidential 29 Terminologies – Logical Volumes Logical Drives LD 0 LD 1 LD 2 LV 0 LV 1 Logical Volumes (LV) In ESVA, it’s also called Pool LD0 (R5) + LD1 (R5) = LV0 (R50) Infortrend Internal Confidential 30 Terminologies – Partitions, Host LUN Mappings Term. Term. LD 0 LV 1 Logical Volumes Partitions Partition 0 Partition 1 Partition 0 Partition 1 Partition 2 Map Host IDs / LUNs ID 0 ID 1 ID 2 LUN 0 LUN 1 LUN 0 HBA ID 7 LUN 0 LUN 1 For EonStor only Infortrend Technology, Inc. Infortrend Internal Confidential Infortrend Confidential RAID Subsystem Basics Infortrend Internal Confidential 32 Storage Architecture ? DAS (Direct Attached Storage) ? Internal DAS ? External DAS ? SAN (Storage Area Network) ? FC SAN ? iSCSI SAN Infortrend Internal Confidential 33 DAS (Direct Attached Storage) ? A external storage system directly attached to a server without a storage work in between ? Interface ? iSCSI, SAS, FC, PCIE ? BlockLevel access Internal DAS External DAS Infortrend Internal Confidential 34 SAN (Storage Attached Network) ? A work of storage devices that can be accessed by multiple servers ? Interface ? FC, iSCSI, FCoE, Infiniband Storage System Blocklevel access Application Server Application Server Application Server Switch Infortrend Internal Confidential Storage Architecture Overall ? Wide interface options to support different consolidation requirements SAS cables Ether cables Ether switch FC cables FC Switch SAS Affordable storage sharing Easy cabling Great performance Lowcost SAN No special storage management expertise required Extensive reach iSCSI FC Proven technology High performance and reliability Great performance Infortrend Internal Confidential 36 FC SAN vs. IP SAN FC SAN IP SAN Performance High Low TCO High Low Manager Expertise High Low Host Components FC HBA iSCSI HBA or NIC + software initiator
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