Hardware Requirement

Refer to the following article for the list of hardware requirements for AhsayOBM: FAQ: Ahsay Hardware Requirement List (HRL) for version 8.1 or above

Software Requirement

Refer to the following article for the list of compatible operating systems and application versions: FAQ: Ahsay Software Compatibility List (SCL) for version 8.1 or above

AhsayOBM Installation

Make sure the latest version of AhsayOBM has been installed on the MS SQL server.

AhsayOBM Add-On Module Configuration

Make sure the Microsoft SQL Server feature has been enabled as an add-on module in your AhsayOBM user account. Contact your backup service provider for more details.

Backup Quota Requirement

Make sure that your AhsayOBM user account has sufficient storage quota assigned to accommodate the storage of MS SQL Server backup set and retention policy.

Continuous Backup Module

The continuous backup add-on module is required if you would like to enable the continuous backup feature.

Java Heap Size

The default Java heap size setting on AhsayOBM is 2048MB. For MS SQL Server backup it is highly recommended to increase the Java heap size setting to be at least 4096MB to improve backup and restore performance. The actual heap size is dependent on amount of free memory available on your MS SQL server.

User Account Privileges

Make sure the operating system account that performs the backup and restore has sufficient permission to access both SQL server and VSS.

Temporary Directory Folder

1. The temporary directory folder is used by AhsayOBM for storing backup set index files and incremental/differential delta files. To ensure optimal backup/restoration performance, it is recommended that the temporary directory folder to be set to a local drive. The temporary folder should not be located on Windows system partition or the database partition to minimize any potential performance impact on Windows or database.
2. It is recommended that the temporary directory folder should have at least free disk space of 50% of the total database size because the default Delta ratio is 50%. The actual free disk space required depends on various factors including the size of the database, number of backup destinations, backup frequency, in-file delta settings etc.
3. The SQL Windows service must have read and write permission to the temporary directory.

SQL Server VSS Writer

Make sure the SqlServerWriter has been installed and running on the SQL server, and the writer state is Stable. This can be verified by running the “vssadmin list writers” command in the Windows Command Prompt.

If you do not find the SqlServerWriter in the result, make sure the SQL Server VSS Writer has been started by following the instructions in Windows Services section below.

Example:

C:\Users\Administrator>vssadmin list writers
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2013 Microsoft Corp.

Writer name: 'Task Scheduler Writer'
   Writer Id: {d61d61c8-d73a-4eee-8cdd-f6f9786b7124}
   Writer Instance Id: {1bddd48e-5052-49db-9b07-b96f96727e6b}
   State: [1] Stable
   Last error: No error

Writer name: 'VSS Metadata Store Writer'
   Writer Id: {75dfb225-e2e4-4d39-9ac9-ffaff65ddf06}
   Writer Instance Id: {088e7a7d-09a8-4cc6-a609-ad90e75ddc93}
   State: [1] Stable
   Last error: No error

Writer name: 'Performance Counters Writer'
   Writer Id: {0bada1de-01a9-4625-8278-69e735f39dd2}
   Writer Instance Id: {f0086dda-9efc-47c5-8eb6-a944c3d09381}
   State: [1] Stable
   Last error: No error

Writer name: 'SqlServerWriter'
   Writer Id: {a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}
   Writer Instance Id: {3de4f842-4d57-4198-9949-3b3f8c2629dc}
   State: [1] Stable
   Last error: No error

Writer name: 'System Writer'
   Writer Id: {e8132975-6f93-4464-a53e-1050253ae220}
   Writer Instance Id: {32d2fccc-624f-4baa-beb3-17b27fcae9ee}
   State: [1] Stable
   Last error: No error

Writer name: 'ASR Writer'
   Writer Id: {be000cbe-11fe-4426-9c58-531aa6355fc4}
   Writer Instance Id: {e8580fb0-b51f-40ab-91bf-4eff5107c4d1}
   State: [1] Stable
   Last error: No error

Writer name: 'WMI Writer'
   Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0}
   Writer Instance Id: {de1b6322-1d96-4f85-adbf-05cb517322ea}
   State: [1] Stable
   Last error: No error

Writer name: 'BITS Writer'
   Writer Id: {4969d978-be47-48b0-b100-f328f07ac1e0}
   Writer Instance Id: {a623b49f-a3d4-42d2-af9a-4e924fb31262}
   State: [1] Stable
   Last error: No error

Writer name: 'Registry Writer'
   Writer Id: {afbab4a2-367d-4d15-a586-71dbb18f8485}
   Writer Instance Id: {cc6b42f1-ebd0-429f-b3d3-e860905d40d3}
   State: [1] Stable
   Last error: No error

Writer name: 'Shadow Copy Optimization Writer'
   Writer Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
   Writer Instance Id: {957ff981-d54f-4a1f-8798-bd9bd76396bd}
   State: [1] Stable
   Last error: No error

Writer name: 'COM+ REGDB Writer'
   Writer Id: {542da469-d3e1-473c-9f4f-7847f01fc64f}
   Writer Instance Id: {801fea63-6bfc-406d-9a40-4ad5af484773}
   State: [1] Stable
   Last error: No error