Raid Controller Virtual Disk Settings - Dell EMC VxFlex Ready Node User Manual
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- Operating system installation manual (74 pages) ,
- Operating system installation manual (86 pages) ,
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RAID controller virtual disk settings
Compo
New Name (CLI)
nent
SDS
sds_max_number_asyncronous_io_pe
r_device
SDS
sds_number_sdc_io_umt
SDS
sds_number_sds_io_umt
SDS
sds_number_sds_copy_io_umt
SDS
sds_number_copy_umt
SDS
sds_number_os_threads
SDS
sds_number_sockets_per_sds_ip
SDS
sds_net_break_do_io_loop
SDS
sds_number_io_buffers
SDS
sds_net_alloc_rcv_buffer_wait_ms
SDC
sdc_tcp_send_buffer_size
SDC
sdc_tcp_receive_buffer_size
SDC
sdc_number_sockets_per_sds_ip
SDC
sdc_number_network_os_threads
SDC
sdc_max_inflight_requests
SDC
sdc_max_in_flight_data
SDC
sdc_number_io_retries
SDC
sdc_volume_statistics_interval
SDC
sdc_optimize_zero_buffers
SDC
sdc_number_unmap_blocks
SDC
sdc_number_non_io_os_threads
RAID controller virtual disk settings and optimal policies regarding each type of disk.
For SSDs in use by a RAID controller
1. Create the Virtual Disk as a RAID0 device.
2. Disable the PD Cache for the HDD
3. Set the VD Caching attributes as NRWTD (No Read Ahead, Write Through,
Direct).
Note:
For VxFlex Ready Node based install, refer to the VxFlex Ready Node
documentation. The virtual disk configuration guidelines are different for
external caching solutions such as DAS Cache.
VxFlex OS performance fine-tuning
Min
Max
Value
Value
1
2000
100
500
100
500
100
164
100
164
1
32
1
8
0
100
1
10
100
10000
4
128*1024
4
128*1024
1
8
1
10
1
10000
1
10000
1
100
1000
600000
0
1 (TRUE)
(FALSE)
1
200
1
16
Dell EMC VxFlex Ready Node AMS User Guide
Compa
High
ct
Perfor
mance
8
60
100
500
100
500
164
164
164
164
4
8
1
4
0
5
2
5
1000
1000
512
4*1024
512
4*1024
1
2
2
8
100
100
10
10
12
12
5000
5000
0
0
(FALSE)
(FALSE)
100
100
3
3
127
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