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DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
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DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
| 3
This document applies to SFA OS version 1.5.6 for the DataDirect Networks S2A6620
storage appliance. It details release requirements, enhancements, resolved issues, known
issues, and recommended practices for SFA OS 1.5.6.
Release highlights:

Security fix for a vulnerability in the Linux BASH shell (the “Shellshock” bug)

IP address for the remote controller can be queried or set from the local controller

Physical disk latency reporting enhancements

Missing drive and internal drive fixes

Fixes to the GUI system management tool
SFA OS 1.5.6 is a
for the S2A6620 platform.
SFA OS 1.5.6.0 is supported on the S2A6620 storage platform ONLY.
The build of SFA OS described in these release notes is 1.5.6.0_14232.
SFA OS 1.5.6.0 requires the following low-level processor code versions. (These
requirements have not changed since SFA OS 1.5.4.1.)
To determine the currently installed BIOS version, run the command:
show enclosure all
To determine the currently installed DEM version, run the command:
show expander all
DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
| 4
SFA OS 1.5.4.1 included a feature that updated the UPS hardware and lithium-ion battery
pack firmware to revision C. SFA OS 1.5.6.0 assumes revision C is installed. It has not
been tested on other revisions.
To determine the current UPS hardware and firmware revisions, run the command:
show ups all
The following versions of SFA OS may be upgraded directly to SFA OS 1.5.6.0:

1.5.4.1

1.5.3.1

1.4.3.3

1.4.3.1
To determine the installed version of SFA OS firmware, run the command:
show controller * all
Please contact DDN Technical Support before attempting to upgrade to
SFA OS 1.5.6.0 from any version other than those listed above.
The S2A6620 Compatibility Guide lists the expansion enclosures, host adapters, disk
drives and SSDs, and client operating systems that are supported by SFA OS 1.5.x. This
guide is available online at http://www.ddn.com/support/downloads-documentation.
SFA OS 1.5.6.0 has been enhanced with new features to manage remote controller IP
settings from the local controller and to improve latency reporting on physical disks. The
use of these features is documented below.
SFA OS 1.5.6 enables a user logged in to the local controller to view IP settings for both
the local and the remote controller on the storage system. Previous releases required the
user to log in separately to each controller in order to view that controller’s IP settings.
DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
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To view IP settings for both controllers concurrently, enter the command:
ui show network_interface
Command output will be similar to the following example:
RAID[0]$ ui show network_interface
Controller LOCAL
Network device id 0
address
192.168.40.10
netmask
255.255.0.0
gateway
192.168.5.51
link_state 1000 Mbps Full Duplex
Controller REMOTE
Network device id 1
address
192.168.40.11
network
255.255.0.0
gateway
192.168.5.51
link_state 100 Mbps Full Duplex
You can also use the “local” and “remote” keywords with this command to display IP
settings for the respective controller. For example:
ui show network_interface local
ui show network_interface remote
Do not use the controller index number in place of the keywords “local” and
“remote”.
SFA OS 1.5.6 enables a user logged in to the local controller to change IP settings for both
the local and the remote controller on the storage system. Previous releases required the
user to log in separately to each controller in order to change that controller’s IP settings.
IPv4 and IPv6 addresses are both supported, although IPv6 address abbreviation is not.
To change the IP settings on the remote controller, enter the command:
ui set network_interface
[local|remote]
<network-id>
ip_address <controller-ip-address>
ip_gateway <gateway-ip-address>
ip_mask
[<subnet-mask-dotted-quad>|<CIDR-subnet-prefix>]
where
<network-id> is the ID of the network interface object for the controller
<controller-ip-address> is the controller IP address in IPv4 or IPv6 format
<gateway-ip-address> is the gateway IP address in IPv4 or IPv6 format
DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
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<subnet-mask-dotted-quad> is the subnet mask expressed as four decimal
octets delimited by periods, such as 255.255.0.0
<CIDR-subnet-prefix> is the subnet mask expressed as a Classless Interdomain
Routing (CIDR) prefix between 8 and 24, without a slash
All parameters are required when changing remote controller IP settings.
For example:
ui set network_interface remote 1 ip_address 192.168.40.11
ip_gateway 192.168.5.51 ip_mask 255.255.0.0
Do not use the controller index number in place of the keywords “local” and
“remote”.
The show pd counters command has been enhanced with new parameters to assist
reporting on physical disk latency. The updated syntax for this command is:
show pd counters
[write_latency|read_latency|write_size|read_size|rates|all]
[latency <0-to-65535-milliseconds>]
[pool <pool-index>]
where
latency filters the report to show drives with latencies greater than n milliseconds
pool filters the report to show only drives in the specified pool
Both filter parameters are optional.
For example, to show write latency event counters for only those physical drives that
experience write latencies greater than 200 ms, enter the command:
show pd counters write_latency latency 200
A report similar to the following will be displayed. The reported events include drives in
all pools, but are limited to latency events of 200 ms or longer.
Physical Disk Write Latency: Elapsed time = 10.251 seconds
Idx
Avg <=4ms <=8ms <=16ms <=32ms <=64ms <=128ms <=256ms <=512ms <=1s <=2s <=4s >4s
---------------------------------------------------------------------------------------------3
409
0
0
0
0
0
0
0
988
0
0
0
0
12
317
0
0
0
0
0
0
0
988
0
0
0
0
14
422
0
0
0
0
0
0
0
987
0
0
0
0
91 1008
0
0
0
0
0
0
0
0
880
96
0
0
To show all write latency event counters for all physical drives in pool 1, enter the
command:
DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
| 7
show pd counters write_latency pool 1
A report similar to the following will be displayed. The reported events are limited to
drives in pool 1, but include all latency ranges.
Physical Disk Write Latency: Elapsed time = 16.010 seconds
Idx
Avg <=4ms <=8ms <=16ms <=32ms <=64ms <=128ms <=256ms <=512ms <=1s <=2s <=4s >4s
---------------------------------------------------------------------------------------------3
44
0
0
395
191
554
396
0
0
0
0
0
0
12
10
40
0
1487
0
0
0
0
0
0
0
0
0
14
104
0
0
21
115
143
473
0
0
0
0
0
0
91
1005
0
0
0
0
0
0
0
0 1487
40
0
0
92
6
410
735
382
0
0
0
0
0
0
0
0
0
To combine both filters, enter the command:
show pd counters write_latency latency 200 pool 1
A report similar to the following will be displayed. The reported events are limited to
latency events in pool 1 that equal or exceed 200 ms.
Physical Disk Write Latency: Elapsed time = 16.010 seconds
Idx
Avg <=4ms <=8ms <=16ms <=32ms <=64ms <=128ms <=256ms <=512ms <=1s <=2s <=4s >4s
---------------------------------------------------------------------------------------------91 1007
0
0
0
0
0
0
0
0 1435
0
0
0
The following issues have been resolved in SFA OS 1.5.6.
DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
| 8
The GUI management agent included with SFA OS supports Microsoft’s Internet Explorer
browser version 9.0 in compatibility mode only. See the S2A6620 Compatibility Guide
for a list of fully supported browsers.

The drive serial number reported in show pd output may contain additional
characters that are not on the disk label. The serial number on the disk label will
always be contained within the potentially more verbose string reported by SFA OS.

The show power_supply command may fail to display the last three characters of
the power supply serial number on SS6000 drive enclosures. This is only a display
issue. The command will complete successfully with no adverse effects other than the
truncated serial number.
Powering off individual drives within an enclosure is not supported by the 6KSSI drive
interposers used in the SS6000 drive enclosure. However, if the command is issued to
turn off power to a specific enclosure slot on the SS6000 (that is, the command set
slot <enclosure-id> <slot-id> power off), SFA OS displays a success
message in error. Drive power is not affected by the command.
If you clear the S2A6620 subsystem configuration, the Fibre Channels initiators may not
log back to the subsystem when there is a directly connected host. This results in no
initiators being available to assign to new presentations. To correct this, do a rescan from
the host before setting up your presentations.
DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
| 9
Consult the S2A6620 User Guide, as well as the SS6000 Enclosure User Guide for any
explansion enclosures, to determine best practices for system installation, system
operation, firmware upgrades, and component replacement. These documents are available
online at http://www.ddn.com/support/downloads-documentation.
To request the latest version of SFA OS or other firmware, email a request to DDN
Technical Support at support@ddn.com. Please provide the following information:
Instructions on downloading the requested firmware will be provided by return email.
To collect debug information for DDN Technical Support, use the diag tgz command.
This is one of several commands that can be run under the diag account, a captive
account on SFA OS systems that is used for performing operations on a storage controller
when there is no command line interface (CLI) access or the CLI is not appropriate.
You will need the IP address of the controller on which you want to run the diag
program. Get this from your network administrator or by using the command:
ui show network_interface
From a terminal emulator program such as PuTTY, use SSH to log in to the diag account
on the target S2A6620 controller and request execution of the desired command. (See
table of commands below.) The command syntax is:
ssh diag@<controller-ip> <diag-command>
where
<controller-ip> is the IP address of the controller that will execute the command
DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
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<diag-command> is one of the commands listed in the table below
For example, the following command requests that system diagnostics be captured as a
.tgz compressed file (binary) to the standard output device (stdout):
ssh diag@111.222.333.444 tgz
Redirect the output of the diag tgz command to a file on your local PC by appending
the UNIX redirect operator (>) and a target file name to this command. For example:
ssh diag@111.222.333.444 tgz > crash.tgz
The following table lists available diag commands.
clear
help
reboot
shutdown
status
.tgz
stdout
tgz
stdout
>
.tgz
ssh diag@111.222.333.444 tgz > crash.tgz
.tgz
stdout
tgzlite
stdout
>
.tgz
ssh diag@111.222.333.444 tgzlite > crash.tgz
Please feel free to contact DDN Technical Support for assistance at any time. Support can
be reached by telephone, email, or on the web.
In addition, Technical Support Bulletins and product Release Notes are posted at ddn.com.
Announcements linked to new bulletins or release notes are available by subscription.
DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
| 11
DataDirect Networks
SFA™ OS 1.5.6.0 Release Notes
| 12