Dell PowerVault MD3000i Hardware Owner's Manual - Page 10

Task-based configuration software MD Storage Manager, Expansion enclosure management modules EMMs - iscsi raid array

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Page 10 highlights

• Two redundant, hot-pluggable power supply/fan modules • 512 MB of mirrored cache on each RAID controller module • Battery backup unit in each RAID controller module that protects against cache data loss for up to 72 hours • Support for up to 45 3.5" SAS physical disks • Support for up to 255 virtual disks per disk group • Up to 2 TB (2036 GB) storage on a single virtual disk • Support for up to two PowerVault MD1000 expansion enclosures through SAS Out port connectors on the RAID controller modules • Online firmware updates (without taking the enclosure offline) for the following components: - RAID controller modules - NVSRAM - Physical disk NOTE: Dell recommends stopping all I/O to the array when downloading physical disk firmware. - Expansion enclosure management modules (EMMs) • Task-based configuration software (MD Storage Manager) • Optional snapshot virtual disk (premium feature), up to four snapshots per virtual disk and 128 snapshots per array • Optional virtual disk copy (premium feature), up to 255 virtual disk copies per array • Continuous background event monitoring for critical problems, such as impending physical disk failure or failed RAID controller modules • Host-based, multipath failover software for redundant configurations to automatically reroute I/O activity from a failed, offline, or removed RAID controller module to its alternate RAID controller module (or from a failed iSCSI connection). This capability maintains a data path between the host server and the storage array. 10 About Your System

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10
About Your System
•
Two redundant, hot-pluggable power supply/fan modules
•
512 MB of mirrored cache on each RAID controller module
•
Battery backup unit in each RAID controller module that protects against
cache data loss for up to 72 hours
•
Support for up to 45 3.5" SAS physical disks
•
Support for up to 255 virtual disks per disk group
•
Up to 2 TB (2036 GB) storage on a single virtual disk
•
Support for up to two PowerVault MD1000 expansion enclosures through
SAS Out port connectors on the RAID controller modules
•
Online firmware updates (without taking the enclosure offline) for the
following components:
–
RAID controller modules
–
NVSRAM
–
Physical disk
NOTE:
Dell recommends stopping all I/O to the array when downloading
physical disk firmware.
–
Expansion enclosure management modules (EMMs)
•
Task-based configuration software (MD Storage Manager)
•
Optional snapshot virtual disk (premium feature), up to four snapshots per
virtual disk and 128 snapshots per array
•
Optional virtual disk copy (premium feature), up to 255 virtual disk copies
per array
•
Continuous background event monitoring for critical problems, such as
impending physical disk failure or failed RAID controller modules
•
Host-based, multipath failover software for redundant configurations to
automatically reroute I/O activity from a failed, offline, or removed RAID
controller module to its alternate RAID controller module (or from a failed
iSCSI connection). This capability maintains a data path between the host
server and the
storage array.