Glossary of Terms
CHA (FED [Front End Director]) - Channel Adapters
8 front end ports (x2 8 GB/s)
DKA (BED [Back End Director]) - Disk Adapter
4 back end 6GB ports
MPPK (VSD [Virtual Storage Director]) - Micro Processor Package - front side
LM (local memory) 2 x 2GB
MCH - Memory Control HUB
Quad Core
- when installing a second pair you NEED either a HUB box or secondary SVP
CMA - [[CACHE]] Memory Adapter - Front side
- SM (1CA and 2CC [first pair installed])
- cache directory (0.5 GB)
- cache memory
- max size is 936 GB
ESW (GSW[Grid Switch]) - Express Switch - 24 PCIe ports 1GB/s full duplex
- 4 ports used for DKC
- 4 ports used for MP
- 8 for CMA
- 8 ports for DKA / CHA
SSW - SAS switch
6GB SAS back end, each cable 2 wide links - DKU
SVP - Service Processor
SSVP - Sub Service Processor
SIM - Service Information Message
LR (Data Excelerator) - Local Router
SM - Shared Memory
- config
- control unit (table for MainFrame)
- dynamic mapping tables (DMT) - dynamic provisioning
- data-data (bit maps for replication)
- parity info
- RTDS
- located on first pair of cache boards on DKC0
- Max. 28 GB/ board
HDU - Hard Disk Unit - 1/4 of a B4
PDEV - Physical Device (RAID group)
VDEV - Virtual Device (2.99 TB)
LDEV - Logical Device (stripes on a PDEV, LDEV can not be bigger then a VDEV)
- LUN presented to the host
Pool Page - 42 MB
HAM - High Availability Manager - Clustering 2 enterprise machines
RAID Group - Parity Group - Array Group - Error Checking and Correction (ECC)
- All mean the same thing
SBX - Small Box
- (SFF) Small Form Factor (2.5")
UBX - Universal Box
- 3.5"
DCR - Dynamic Cache Residency (RAM disk)
CVS - Custom Volume Size
SSID - Subsystem ID
CUDG - Control Unit Diagnostic
SCHIP - FW for SATA drives
DRR - Data Recovery and Regeneration