Data Node
Suppose this is the specification given:
6 x Dell PowerEdge R720 Nodes
Each with
- 2 x E5-2680 V2 2.8GHz 10-core, HT=ON
- 192 GB RAM
- 13 x PERC 900GB 15K 6Gbps SAS 2.5″ SFF HS HDD , Total storage ~12 TB
- 10Gb/s Full Duplex, Auto-Negotiation off
Explanation
6 is the number of Servers. Followed by Manufacturer and Product Name
Any of the below Commands can be used in Linux to get specific details:
- To get Manufacturer and Product Name
sudo dmidecode | grep -A3 "^System Information"
Sample Output:
System Information
Manufacturer: Dell Inc.
Product Name: PowerEdge M620
Version: Not Specified
- To get Model and vendor of the Device
cat /sys/class/block/sda/device/{model,vendor}
Sample Output:
PERC H710
DELL
- To get device model
awk '{ print FILENAME, $0 }' /sys/class/block/sd[a-z]/device/model
Sample Output:
/sys/class/block/sda/device/model PERC H710
- To get type, size and model of the disks
Sample Output:
KNAME TYPE SIZE MODEL
sda disk 1.1T PERC H710
sda1 part 350M
sda2 part 557.3G
sda3 part 500M
sda4 part 1K
sda5 part 558.7G
dm-0 lvm 50G
dm-1 lvm 4G
dm-2 lvm 504.7G
CPU Info
- This gives details of the CPU Info.
cat /proc/cpuinfo
Summary of cores/Physical processors/Hyperthreads can be taken from
lscpu command
Example
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 32
On-line CPU(s) list: 0-31
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 2
2 Physical Sockets, where a CPU chip can be fitted. We have 2 chips here. Each chip has 8 cores and each core has two threads. In whole system has 16 physical cores (or units capable of running program independently) or 32 logical processors.
RAM on the machine
cat /proc/meminfo - You can see total memory here
Hard Disk details
Example: 13 x PERC 900GB 15K 6Gbps SAS 2.5″ SFF HS HDD , Total storage ~12 TB
13 is the number of disks used.
PERC (PowerEdge RAID Controller (PERC)) is the model with 900GB size. Which can be obtained from commands mentioned above)
From Dell website we can get details on the Interface support etc as below.
|
Model |
Interface Support |
PCI Support |
SAS Connectors |
Cache Memory Size |
Write Back Cache |
RAID Levels |
Max Drive Support |
RAID Support |
|
PERC H710P Adapter |
6Gb/s SAS |
PCI-Express 2.0 |
2×4 Internal |
1GB NV |
Flash Backed Cache |
0,1,5,6,10,50,60 |
32 |
Hardware RAID |
RAID Hardware Info can be obtained as below:
# lspci -vv | grep -i raid
Sample Output:
02:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2208 [Thunderbolt] (rev 05)
Kernel driver in use: megaraid_sas
Kernel modules: megaraid_sas
Network Specifications:
Example: 10Gb/s Full Duplex, Auto-Negotiation off
Command used to capture the above:
- dmesg |grep em1 (where em1 is the interface name)
Sample Output:
udev: renamed network interface eth0 to em1
bonding: bond0: Adding slave em1.
bnx2x 0000:01:00.0: em1: using MSI-X IRQs: sp 127 fp[0] 129 ... fp[7] 136
bonding: bond0: enslaving em1 as a backup interface with a down link.
bnx2x 0000:01:00.0: em1: NIC Link is Up, 10000 Mbps full duplex, Flow control: none
bond0: link status definitely up for interface em1, 10000 Mbps full duplex.
- sudo ethtool em1
Sample Output:
Settings for em1:
Supported ports: [ FIBRE ]
Supported link modes: 1000baseT/Full
10000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Advertised link modes: 1000baseT/Full
10000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Link partner advertised link modes: 1000baseT/Full
10000baseT/Full
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: Yes
Speed: 10000Mb/s
Duplex: Full
Port: FIBRE
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: d
Current message level: 0x00000000 (0)
Link detected: yes