Scsi Termination And Firmware; New Features Of Hp Netraid-1M And 2M Adapters - HP P3410A - NetRAID 1M RAID Controller Installation And Configuration Manual

Chapter 1

SCSI Termination and Firmware

Termination: Active termination on the SCSI bus conforms to Alternative 2 of
the SCSI-2 specifications. Termination enable/disable is automatic through cable
detection.
Firmware: The HP NetRAID-1M and 2M firmware handles all RAID and SCSI
command processing and also supports the following functions:
Disconnect/Reconnect feature optimizes SCSI Bus seek.
Tagged Command Queuing allows multiple commands to be sent to the
controller, thus improving random access.
Scatter/Gather supports multiple address/count pairs.
Multi-threading supports up to 255 simultaneous commands with elevator
sorting and concatenation of requests per SCSI channel.
Stripe size for each logical drive can be set from 2 KB to 128 KB.
Multiple rebuilds and consistency checks have user-definable priority.

New Features of HP NetRAID-1M and 2M Adapters

New features of HP NetRAID-1M and 2M adapters include:
Ultra3 SCSI support, with transfer rates up to 160 MB/sec for each
channel
Greater number of disks per logical drive. All the physical disks attached
to an adapter can now be combined into one logical drive—up to 12 disks
for the HP NetRAID-1M and up to 24 disks for the two-channel NetRAID
2M. Older HP NetRAID adapters supported up to eight physical disks per
logical drive.
RAID configurations containing up to 40 logical devices are now allowed
with both the HP NetRAID-1M and 2M. Older HP NetRAID adapters
supported up to eight logical drives.
Enhanced Array Spanning
Support for Clustering (HP NetRAID-2M only)
Introduction
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