3PAR InServ Storage Server Hardware :

Hardware monitoring and configuration tasks can be performed with both the 3PAR InForm Command Line Interface (CLI) and the 3PAR InForm Management Console.

Identifying Storage Server Components:

FRONT VIEW

Rear View:

Physical Disks:

A physical disk is a hard drive. Each physical disk is mounted on a drive magazine or in a drivemodule. The drive magazines and modules are located in drive cages in 3PAR InServ StorageServers. There are three types of physical disks: Fibre Channel (FC), Near Line (NL), and SolidState Drives (SSD).

In DC2 and DC4 drive cages, each drive magazine holds four disks numbered 0 through 3 fromthe rear to the front of the magazine. The DC2 and DC4 drive cages contain a maximum of tendrive magazines for a maximum of 40 physical disks in each drive cage.

In a DC3 drive cage, each plug-in drive module holds a single disk numbered 0 through 15. TheDC3 drive cage contains 16 drive bays and accepts up to 16 drive magazine modules for amaximum of 16 physical disks in each drive cage.

Disk Replacement :

When a physical disk failure occurs, the disk is no longer usable by the InServ system and mustbe replaced. As a physical disk fails, the InServ system automatically relocates the chunklets inthis disk to other disks in the system. When replacing the physical disk, the chunklets from allof the disks in the drive magazine must be managed during the replacement procedure.Managing the disk replacement procedure includes:

■ Completely relocating the chunklets during the disk replacement procedure. ■ Relocating the chunklets from the failed disk, and then temporarily diverting data writes to

chunklets from the valid disks to logging logical disks.

Drive Cage Models :

There are three models of drive cages: DC2, DC3, and DC4. The InServ S-Class Storage Serversand T-Class Storage Servers may contain both DC2 and DC4 drive cages. The InServ E-ClassStorage Servers and F-Class Storage Servers only contain DC3 drive cages.

■ The DC2 drive cage is a 40 disk, 2 Gbps drive cage. ■ The DC3 drive cage is a 16 disk, 2 Gbps or 4 Gbps drive cage.

◆ F-Class DC3: up to 4 Gbps ◆ E-Class DC3: up to 2 Gbps

■ The DC4 drive cage is a 40 disk, 4 Gbps drive cage.

DC2 and DC4 Drive Cages :

The DC2 and DC4 drive cages house ten drive bays numbered 0 through 9. Each drive bayaccommodates a single drive magazine that holds four disks.

DC3 Drive Cage :

The DC3 drive cage contains 16 drive bays at the front, each accommodating the appropriateplug-in drive magazine module. The 16 drive bays are arranged in four rows of four drives.

DC3 Ports and Cabling :

In the DC3 drive cage, two Switched Bunch of Disks (SBD) Modules, each providing four smallform-factor pluggable (SFP) modules to service the drive cage. The left-hand SBD has fourports, labeled Port 0 through Port 3, from bottom to top. The right-hand SBD has four ports,labeled Port 0 through Port 3, from top to bottom.

S-Class and T-Class Controller Node Numbering :

InServ S-Class and T-Class Storage Servers have 2, 4, 6, or 8 controller nodes depending on thestorage server model. The controller nodes assume the number of the bay they occupy in thestorage server backplane. The bays are numbered from 0 to <n>, from left to right, and fromtop to bottom.

E-Class and F-Class Controller Node Numbering :

InServ E-Class and F-Class Storage Servers have a different number of controller nodesdepending on the storage server model.

■ InServ E-Class Storage Servers always contain two controller nodes. The top controller nodeis number 0 and the bottom controller node is number 1.

■ InServ F-Class Storage Servers contain two or four controller nodes. The controller nodesare numbered 0-3 from top to bottom.