02-11-2016
SAS or SSD for Ubuntu 14.04 and data analysis
I am in the process of building a workstation and have a question related to performance. I am a scientist who deals with big data (average file size 30-50gb). My OS is ubuntu 14.04 and so far I have a 128gb dual xeon E5-2630 with 6 cores each. I/O buffering is an issue so I am adding a 256/512? PCIe card and either 2 SSD or SAS drives for the OS and software. Since the PCIe will be separate its main purpose will be for file transfer, so would a SAS or SSD be a better fit for the OS? I am leaning towards SAS for the buffering issue, but wanted to ask more knowledgeable users. I forgot to mention that there will be a separate 1 or 2TB drive. Any recommendations for the size of the SAS or SSD? Thanks
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LEARN ABOUT DEBIAN
smp_rep_manufacturer
SMP_REP_MANUFACTURER(8) SMP_UTILS SMP_REP_MANUFACTURER(8)
NAME
smp_rep_manufacturer - invoke REPORT MANUFACTURER INFORMATION SMP function
SYNOPSIS
smp_rep_manufacturer [--help] [--hex] [--interface=PARAMS] [--raw] [--sa=SAS_ADDR] [--verbose] [--version] [--zero] SMP_DEVICE[,N]
DESCRIPTION
Sends a SAS Management Protocol (SMP) REPORT MANUFACTURER INFORMATION function request to a SMP target. The SMP target is identified by the
SMP_DEVICE and the SAS_ADDR. Depending on the interface, the SAS_ADDR may be deduced from the SMP_DEVICE. The mpt interface uses SMP_DEVICE
to identify a HBA (an SMP initiator) and needs the additional ,N to differentiate between HBAs if there are multiple present.
OPTIONS
Mandatory arguments to long options are mandatory for short options as well.
-h, --help
output the usage message then exit.
-H, --hex
output the response (less the CRC field) in hexadecimal.
-I, --interface=PARAMS
interface specific parameters. In this case "interface" refers to the path through the operating system to the SMP initiator. See
the smp_utils man page for more information.
-r, --raw
send the response (less the CRC field) to stdout in binary. All error messages are sent to stderr.
-s, --sa=SAS_ADDR
specifies the SAS address of the SMP target device. Typically this is an expander. This option may not be needed if the SMP_DEVICE
has the target's SAS address within it. The SAS_ADDR is in decimal but most SAS addresses are shown in hexadecimal. To give a number
in hexadecimal either prefix it with '0x' or put a trailing 'h' on it.
-v, --verbose
increase the verbosity of the output. Can be used multiple times
-V, --version
print the version string and then exit.
-z, --zero
zero the Allocated Response Length field in the request. This is required for strict SAS-1.1 compliance. However this option should
not be given in SAS-2 and later; if it is given an abridged response may result.
CONFORMING TO
The SMP REPORT MANUFACTURER function was introduced in SAS-1, with small additions in SAS-1.1 . This function remains unaltered in SAS-2
and SPL-1.
AUTHORS
Written by Douglas Gilbert.
REPORTING BUGS
Report bugs to <dgilbert at interlog dot com>.
COPYRIGHT
Copyright (C) 2006-2011 Douglas Gilbert
This software is distributed under a FreeBSD license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR-
POSE.
SEE ALSO
smp_utils, smp_discover(smp_utils)
smp_utils-0.96 May 2011 SMP_REP_MANUFACTURER(8)