Compaq Infortrend manual Basic RAID Management, Appendix

Appendix

B

Firmware Functionality

Specifications

Basic RAID Management:

Specification	Feature
RAID Levels	0, 1(0+1), 3, 5, 10, 30, and 50 (Multi-level RAID with
	the logical volume implementation)
Maximum Number of	64 or 128 through OEM IAPPEND utility
logical drives
RAID level dependency to	Independent. Logical drive configured in different
each logical drive	RAID levels can co-exist in a logical volume and in a
	RAID system
Maximum number of drives	128
for each logical drive
Configurable stripe size	4KB to 256KB per logical drive
Configurable write policy	Write-back or write-through per logical drive
Logical drive identification	Unique, controller randomly generated logical drive ID;
	Logical drive name user-configurable
Maximum number of	128, through OEM “iappend.exe” program
partitions for each logical
drive
Maximum number of	128
logical drives in a logical
volume
Maximum number of	32
logical volumes
Maximum number of LUNs	Up to 1024
Mappable
Maximum number of LUNs	Up to 32, user configurable
per Host ID
Concurrent I/O	Supported
Tag Command Queuing	Supported
Dedicated Spare Drive	Supported, hereby defined as the spare drive
	specifically assigned to a logical drive
Global Spare Drive	Supported, the spare drive serving all logical drives
Global Spare Auto-Assign	Supported, applies to non-configured drives
Co-existing Dedicated and	Supported
Global Spare Drives
Auto-rebuild onto spare	Supported
drive

Firmware Functionality Specifications B-1