User`s guide

Synology DiskStation User's Guide

Based on DSM 4.2

27 Chapter 4: Manage Storage Space

Running S.M.A.R.T. Test

Disk S.M.A.R.T. tests examine and report the status of your hard disk, alerting you to possible disk failures. We

recommended promptly changing your disk if any errors are detected. S.M.A.R.T. tests can also be scheduled to

run automatically by creating tasks.

Checking Disk Info

The Disk Info section displays a hard disk's model name, serial number, firmware version, and total size.

SSD Cache

SSD cache

Please refer to your Synology server Quick Installation Guide for information regarding SSD installation. For more

detailed information regarding SSD management, please see DSM Help or

drives can be installed and mounted in a RAID 0 configuration to boost the read speed of a volume,

including iSCSI LUN (Regular Files) on a volume, or iSCSI LUN (Block-Level) on your Synology server. You can

mount, check SSD compatibility, and view related information by going to Main Menu > Storage Manager >

SSD Cache.

Synology SSD Cache White Paper.

Hot Spare

Hot spare

 The RAID type of the volume/Disk Group/iSCSI LUN must be one with data protection (i.e. RAID 1, RAID 5,

RAID 6, RAID 10).

disks are standby hard disks that can repair a degraded volume/Disk Group/iSCSI LUN by

automatically replacing a failed disk. Hot spare disks can be globally assigned to protect any volume/Disk

Group/iSCSI LUN within your DiskStation, as long as the volume/Disk Group/iSCSI LUN matches the following

criteria:

 The hot spare disk size must be equal to or larger than the size of the smallest disk in the volume/Disk

Group/iSCSI LUN.

Managing Hot Spares

Go to Storage Manager > Hot Spare > Manage to assign and manage hot spare disks. For more detailed

information, please see DSM Help.

---------

SSD cache is supported on specific models only. Visit www.synology.com for more information

The hot spare feature is available on specific models only.