| Feature: Software |
Novell SFT
III |
StandbyServer |
MTO |
- NetWare 3.12 support
|
No |
Yes |
Yes |
| NetWare 4.1 support |
Yes |
Yes |
Yes |
| NetWare 4.11 support |
Yes |
Yes |
Yes |
| IntranetWare support |
Yes |
Yes |
Yes |
| Support for third party applications |
Yes
(third-party
applications must be certified as SFT III-aware) |
Yes
(supports all
certified NLMs) |
Yes |
| SnapshotServer |
No |
No |
Yes |
|
| Feature: Hardware |
Novell SFT
III |
StandbyServer |
MTO |
| Hardware support |
Supports only machines
that can run EISA or PCI cards as Mirrored Server Link cards |
Supports any machine
that has IPX capability |
Any machine, only the actual disk partitions need to be sized similarly |
| Failover capabilities: Automatic
| Yes |
Yes |
Yes |
| Failover capabilities: Immediate |
Yes
(transparent to users) |
No
(after SYS volume mounts, reconnection is automatic for users of a 32-bit client. Other users must reconnect manually) |
No
(need to reboot the standby, and NETX and VLM need to reconnect) |
| Native disk mirroring |
Yes |
Yes |
Yes |
| Disk mirroring, protects from hardware
failures |
Yes |
Yes |
Yes |
| Disk mirroring, protects from software errors |
Yes
(in I/O engine only) |
Yes |
Yes |
| Environment for implementation |
Must be dedicated to
mirroring process |
Servers running
third-party NLMs, databases, tape backup engines and other
applications |
NetWare version doesn't have to be identical |
| Secondary server operation |
Must be dedicated to
mirroring process |
Can act as print, fax
or tape backup server while mirroring primary server. Can also be
configured to allow local (non-mirrored) volumes to perform any general or
specific purpose |
Utility Server (e.g. backup-, print-, CDROM-server. or a data vault) |
| SMP compliance |
No
(works in
dual-processor asymmetric configuration only) |
Yes |
Yes |
| Long distance capability |
No
(limited to distance
specifications for Mirrored Server Link cards) |
Yes |
Yes |
| Many-to-one capability |
No
(each secondary
server must be dedicated to a single primary server) |
Option
(one secondary
server can be linked to multiple primary servers but can replace only one
failed server at a time) |
Yes
(up to 32 servers) |
| One-to-many capability |
No |
Yes
(the second acts as a vault server) |
Yes
(the second acts as a vault server) |
| Remote Disk Read Blocker |
No |
No |
Yes |
| Throttling Mechanism |
No |
No |
Yes |
| Automatic Disk Integrity Check |
No |
No |
Yes |
|
| System requirements |
Novell SFT
III |
StandbyServer |
MTO |
| Servers |
Two servers. Must be
identically configured |
Two servers. Need not
be identical, except partition sizes must match |
More than 2 servers. Need not
be identical, except partition sizes must match |
| Dedicated
Link |
Required |
Optional (recommended) |
Optional, a LAN or WAN (recommended) |
| Dedicated link card types |
Two Mirrored Server Link cards |
Two standard IPX protocol communication cards |
NetWare approved card + IPX |
| Dedicated link
drivers |
Requires unique drivers which are available for
limited hardware only |
Can use any IPX-compatible interface |
Can use any IPX-compatible interface |