show stats protocol srdf
Displays SRDF protocol statistics for a specified time period.
Syntax
show stats protocol srdf [symm id <symm-id>] [rdf-group <rdf-group>] [total] {interval <interval-time> | start-time <"yyyy/mm/dd hh:mm:ss"> end-time <"yyyy/mm/dd hh:mm:ss">}
Parameters
symm id <symm-id> | Specifies a Symmetrix ID. The Symmetrix ID is an alpha-numeric string (for example, a standard Symmetrix serial number : 000104900363). |
rdf-group <rdf-group> | Specifies a Symmetrix RDF group. The RDF number can begin with either a 0 or 1. The default value is 1. The maximum number of RDF groups is 254. |
total | Displays the total bytes transferred instead of throughput. |
interval <time-interval> | Specifies the time interval. Choices are the most recent: • 1min • 5min • hour • day • week • month Statistics are refreshed, periodically, as specified by the time interval. |
start-time <yyyy/mm/dd hh:mm:ss> | Specifies the start time to collect SRDF statistics. Use the format "yyyy/mm/dd hh:mm:ss" (enclosed in quotation marks). |
end-time <yyyy/mm/dd hh:mm:ss> | Specifies the end time to stop collecting SRDF statistics. Use the format "yyyy/mm/dd hh:mm:ss" (enclosed in quotation marks). |
Usage
EMC Symmetrix Remote Data Facility/Asynchronous (SRDF/A) is a SAN replication product. It carries out data replication over GigE instead of Fibre Channel, using gateways that implement the SRDF protocol.
RiOS 6.1 and later SRDF storage optimization provides support for environments using storage technology that originates traffic through Symmetrix GigE ports.
To increase the data reduction LAN-to-WAN ratio with either equal or greater data throughput in environments with SRDF traffic, RiOS separates the SRDF headers from the application data workload written to storage. The SRDF headers contain changing protocol state information, such as sequence numbers. These headers interrupt the network stream and reduce the ability of SDR to match large, contiguous data patterns. After isolating the header data, the SteelHead performs SDR network deduplication on the larger, uninterrupted storage data workload and LZ compression on the headers. RiOS then optimizes, reassembles, and delivers the data to the TCP consumer without compromising data integrity.
The show stats protocol srdf command displays SRDF statistics such as average throughput, the total amount of LAN and WAN traffic, the amount of data reduction after optimization, and the peak LAN and WAN data transfer.
Example
The following example shows throughput statistics for all Symmetrix IDs:
amnesiac > show stats protocol srdf interval week
Array LAN Tput (Kbps) WAN Tput (Kbps) Rdxn Cap Incr
-------------------- ------------------ ------------------ ------ ---------
myfooserver 79.7 0.7 99.18% 121.00X
Peak LAN Tput: 377,410.6 Kbps at 11:00:00 on 2014/09/30
Peak WAN Tput: 3,073.7 Kbps at 11:00:00 on 2014/09/30
The following example shows output for the total bytes transferred:
amnesiac > show stats protocol srdf total interval week
Array Total LAN KB Total WAN KB Rdxn Cap Incr
-------------------- ------------ ------------ ------------ ------------
myfooserver 6,027,666 49,418 99.18% 121.00X
Peak LAN transfer: 707,644 KB at 11:00:00 on 2014/09/30
Peak WAN transfer: 5,763 KB at 11:00:00 on 2014/09/30
The following example shows the output for the start-time/end-time format:
amnesiac > show stats protocol srdf symm id 6000000060 start-time "2014/11/04 16:17:00" end-time "2014/11/11 15:17:00"
Array RDF Group LAN Tput (Kbps) WAN Tput (Kbps) Rdxn
-------------------- ---------- ------------------ ------------------ ------
6000000060 1 2,142.3 2,177.7 -1.65%
Peak LAN Tput: 57,005.0 Kbps at 09:00:00 on 2014/11/10
Peak WAN Tput: 57,901.5 Kbps at 09:00:00 on 2014/11/10
6000000060 2 2,142.3 412.4 80.75%
Peak LAN Tput: 56,982.9 Kbps at 09:00:00 on 2014/11/10
Peak WAN Tput: 10,970.0 Kbps at 09:00:00 on 2014/11/10
6000000060 3 2,142.3 20.1 99.06%
Peak LAN Tput: 56,993.5 Kbps at 09:00:00 on 2014/11/10
Peak WAN Tput: 2,736.1 Kbps at 16:00:00 on 2014/11/07
6000000060 Total 21,423.0 2,751.8 87.16%
Peak LAN Tput: 569,949.3 Kbps at 09:00:00 on 2014/11/10
Peak WAN Tput: 72,609.9 Kbps at 09:00:00 on 2014/11/10
Product
SteelHead CX, SteelHead EX, SteelHead-v, SteelHead-c
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