Upgrade Firmware Of Snapdisk E1000; Mpio And Mc/S - Overland Storage SnapSAN S1000 User Manual

SnapSAN S1000 User Guide
Enclosure Management > S.M.A.R.T. displays the S.M.A.R.T. information of all Physical
Disks, including head units and expansion arrays.
S.M.A.R.T. only supports SATA drives. SAS drives do not have this function and will show
in the web page:
"N/A"
SnapDisk E1000 expansion arrays have some constraints:
• Up to four SnapDisk E1000 expansion arrays can be connected providing up to 48
additional disk drives.
• While RAID Groups can be created among the multiple chassis, the maximum number
of disks in a single RAID Group is 32.
• A Global Spare Disk can support all RAID Groups located in the different chassis.

Upgrade Firmware of SnapDisk E1000

To download the latest firmware, go to the Overland Storage web page for the SnapSAN
products (http://support.overlandstorage.com/support/SnapSAN.htm). After downloading,
follow the normal upgrade function to install it.

MPIO and MC/S

MPIO (Multi-Path Input/Output) and MC/S (Multiple Connections per Session) use multiple
physical paths to create logical "paths" between the server and the storage device. In the
case which one or more of these components fails, causing the path to fail, multi-path logic
uses an alternate path for I/O. So applications can still access their data.
A Microsoft iSCSI initiator supports multi-path. Please follow this procedure to use MPIO
feature with the initiator:
1. A host with two or more LAN ports is connected to the SnapSAN S1000.
2. Create a RAID Group / virtual disk and attach this virtual disk to the host.
3. When installing the Microsoft iSCSI initiator, install MPIO driver at the same time.
4. Log on to the target separately on each port. When logging on, check the Enable
Multi-path option.
10400310-003 01/2013
©2010-13 Overland Storage, Inc.
MPIO and MC/S
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