Difference between revisions of "Reload System Requirements"

Revision as of 19:01, 30 January 2017

System Requirements

Reload is a backup system and will use significant amounts of disk space.

Supported OS versions

• SUSE Linux Enterprise Server 11 (SLES11) 32-Bit or 64-Bit.
• SUSE Linux Enterprise Server 12 (SLES12) 64-Bit.

The Reload server must be run on the Linux platform, but it backs up GroupWise post offices on NetWare, Linux or Windows platforms.

Memory

Two gigabytes of available RAM should be sufficient for most environments. More memory is helpful.

CPU

Type

The Reload server only supports the Intel Platform x-86 Platform

Speed

The faster the better; SMP is not to be considered a requirement, however, testing of Reload on SMP has shown that Reload is benefited by SMP.

Network

• Server Only Backup Method

This backup method in with the Reload Server gets a client connection via a Linux mount point to the post office or domain to be backed up. Reload would then copy date from the live server to the Reload server via the mount point it had established to the live server housing GroupWise. Prior to Reload 5, this was the only method of performing backups. In this scenario the Reload Server should be in close network proximity to the GroupWise servers that are being backed up with Reload. If a Reload Server and some GroupWise post offices are on a Gigabit switch, it would be best to have a network card in the Reload server that supports a Gigabit speed.

• Paired Collector/Server Model

This backup method is new to Reload 5. A “Collector” runs on the server that houses a GroupWise post office or domain. The Collector then uses Rsync as the transport to get data from the GroupWise server to the Reload Server. This model requires the following disk space on the GroupWise server:

• Post Office

2 times the size of the post office OFUSER, OFMSG and GWDMS directories. But not including the OFUSER/INDEX directory.

So for example, if the OFUSER directory contents was 1.5 GB and the OFMSG directory was 2.5 GB and the GWDMS directory was 1 GB the total space needed to service the Collector would be 1.5+2.5+1 = 5 X 2 = 10 GB – Needed somewhere on the GroupWise server to sustain the Reload Collector. Disk Space on The Reload Server The disk space may reside on the Reload server or on a SAN. The requirements of the disk solution are as follows:

• The disk solution should always be mounted for use with Reload.
• The disk solution should be formatted with a Linux based file system, specifically a file system that supports symbolic links.
• If the disk is not a SAN, but a NAS solution for example, the mount should be an NFS mount. No other protocol other than NFS.

Calculating Disk Space

Disk space must be carefully considered for each Reload Server. When the Reload server reaches the error threshold for disk space, it will no longer create backups. Make sure the target system has plenty of space to accommodate the needs of your Reload backups. The Reload server requires the following disk space per profile:

• Initial backup: 100% of the size of the post office.
• Then 14 days of backups (on average) will be retained: 150% of the size of the post office.

For example: A 100 gigabyte post office, for example, would require approximately 250 GB of disk space to retain 14 days worth of backups. Disk speed directly impacts Reload performance. A disk that is tuned for fast writes to disk is highly recommended and will improve performance. When considering disk space requirements, also take into account future growth of GroupWise post offices, and the space that will be required to sustain that growth. If Reload runs out of hard disk space, backups will no longer be created. A Reload profile has a threshold of days to keep in hot backups. This can help prevent systems from running out of disk space. This setting is found in the Reload Web Administration under the Profile configuration | <select desired profile> | Configure | Backup Job Settings | Number of Backups To Keep. Remember to take Post Office growth and the host Operating system into account while calculating disk space needs.