Scorecard
| Seam- less fail- over | Auto fail- back | Man- age- abil- ity | Per- form- ance | Docu- men- ta- tion | T O T A L | |
| Co- Standby Server | 8 x 0.5 = 4.00 | 7 x 0.15 = 1.05 | 8 x 0.15 = 1.20 | 5 x 0.10 = 0.50 | 7 x 0.10 = 0.70 | 7.45 |
| FullTime Cluster | 7 x 0.5 = 3.50 | 7 x 0.15 = 1.05 | 7 x 0.15 = 1.05 | 5 x 0.10 = 0.50 | 5 x 0.10 = 0.50 | 6.60 |
| Windows NT Server Enter- prise Edition | 5 x 0.5 = 2.50 | 7 x 0.15 = 1.05 | 5 x 0.15 = 0.75 | 7 x 0.10 = 0.70 | 6 x 0.10 = 0.60 | 5.60 |
| Power Switch/ NT | 4 x 0.5 = 2.00 | 7 x 0.15 = 1.05 | 8 x 0.15 = 1.20 | 7 x 0.10 = 0.70 | 6 x 0.10 = 0.60 | 5.55 |
| Backup Exec, Shared Storage Option and Replica- tion Exec | 5 x 0.5 = 2.50 | 5 x 0.15 = 0.75 | 3 x 0.15 = 0.45 | 7 x 0.10 = 0.70 | 3 x 0.10 = 0.30 | 4.70 |
Note: Products are ranked on a 1-10 scale in each category, then multiplied by the weight in each category. These are added to give a total score.
Scorecard
Co-StandbyServer 4.1
Vinca Corp.
1201 North 800 East
Orem, Utah 84097
(888) 808-4622
(801) 223-3100
fax: (801) 223-3107
Web site
$5,499
Pros: Seamless failover and failback; Easy administration
Cons: Clustered computers must be in the same domain and must have at least three hard disks.
FullTime Cluster 4.3
Legato Systems, Inc.
3210 Porter Drive
Palo Alto, Calif. 94304
(650) 812-6000
fax: (650) 812-6032
$6,000 to $72,000
Pros: Excellent failover and failback
Cons: Didn't mirror dynamic registry updates
Windows Load Balancing Service
Microsoft Corporation
One Microsoft Way
Redmond, Wash. 98052
(425) 882-8080
fax: (425) 936-7329
Web site
Included with Windows NT Server 4.0 Enterprise Edition ($3,999)
Pros: Produced a highly reliable Web server environment;
Good failover/failback
Cons: Doesn't replicate data across clustered servers
PowerSwitch/NT 4.0
APCON, Inc.
17938 SW Upper Boones Ferry Road
Portland, Ore. 97224
(503) 639-6700
fax: (503) 639-6740
Web site
$3,140 to $4,760
Pros: Excellent data preservation at failover
Cons: Failover requires a reboot;
Overly sensitive about the server video card and other server hardware
Backup Exec 7.2, Shared Storage Option
Replication Exec 1.5
Veritas Software
400 International Parkway
Heathrow, Fla. 32746
(800) 327-2232
(407) 531-7500
fax: (407) 531-7730
Web site
$4,999
Pros: Good shared disk administration
Cons: No load balancing;
No server health awareness
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