ioSafe NAS User's Guide
Based Synology on DSM 5.0
26
Manage iSCSI LUNs
An iSCSI LUN (logical unit number) represents an individually addressable portion of an iSCSI Target. An iSCSI
LUN can be mapped to multiple iSCSI Targets to perform storage operations such as read or write.
Go to
Storage Manager
and click the
iSCSI LUN
tab to manage iSCSI LUNs on your IoSafe NAS. The
maximum number of iSCSI LUNS varies depending on the model. For detailed product specifications, please
refer to
www.ioSafe.com
.
Clone iSCSI LUNs
LUN Clone
1
allows you to create near-instantaneous virtual copies of a LUN. It means much higher productivity
and less complex deployment during system-wide operations. LUN Clone also consumes only a fraction of
storage at the time of creation.
Go to
Storage Manager
and click the
Clone
button to make a writable copy of an iSCSI LUN or an iSCSI LUN
snapshot
Take iSCSI LUN Snapshots
LUN Snapshot
1
allows you to create up to 256 snapshots per LUN using point-in-time technology without having
any impact to system performance. It is efficient for your valuable storage space and also increases the level of
protection, letting you easily recover valuable data.
Go to
Storage Manager
and click the
Snapshot
button to take iSCSI LUN snapshots.
Manage Hard Disks
The
HDD/SSD
tab allows you to monitor the status of the hard disks installed in your IoSafe NAS, providing
options to manage and analyze hard disk performance and health. To see this tab, go to
Storage Manager
and
click
HDD/SSD
. For more detailed instructions, please see
DSM Help
.
Enabling Write Cache Support
Enabling write cache support enhances the performance of your IoSafe NAS. Only certain hard disk models
support this feature. To ensure data protection while using write cache support, usage of a UPS device is
strongly recommended. We also suggest the system be shut down properly every time after use. Disabling write
cache will reduce the chances of data loss caused by abnormal power outages, but system performance will
decline.
Running S.M.A.R.T. Tests
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
2
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 IoSafe server. You can
mount, check SSD compatibility, and view related information by going to
Storage Manager
>
SSD Cache
.
Please refer to your IoSafe server
Quick Installation Guide
for information regarding SSD installation. For more
detailed information regarding SSD management, please see
DSM Help
or
Synology SSD Cache White Paper
.
---------
1
LUN Clone and Snapshot are only available on specific models.
2
SSD cache is supported on specific models only. Visit
www.synology.com
for more information
