Server Chassis — 40 Frequently Asked Questions
Real questions enterprise IT engineers ask about Server Chassis, with practical answers from Pro Disk Engineering. Questions sourced from Server Fault and Network Engineering Stack Exchange under CC BY-SA — see source links per question. Answers are original Pro Disk Network content with links to our buying guides and product catalog.
Is it possible to reset the password on a SuperMicro IPMI interface?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (43 votes · 189,369 views) ›
Can you mount a network switch upside down?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (115 votes · 16,751 views) ›
Configuring SuperMicro IPMI to use one of the LAN interfaces instead of the IPMI port?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (40 votes · 129,521 views) ›
Do you skip a rack unit between servers?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (75 votes · 30,673 views) ›
Disable hyperthreading from within Linux (no access to BIOS)
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (43 votes · 93,468 views) ›
What are the iDRAC 7 default settings?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (13 votes · 130,755 views) ›
HP ProLiant DL360 G7 hangs at "Power and Thermal Calibration" screen
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (46 votes · 53,300 views) ›
Supermicro IPMIView KVM Console does not work at all
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (14 votes · 103,592 views) ›
Accessing Supermicro IPMI via SSH
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (21 votes · 85,439 views) ›
Third-party SSD solutions in ProLiant Gen8 servers
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
RAID level guidance: for HDD arrays of drives 4 TB or larger, use RAID 6 (dual parity). RAID 5 is no longer responsible at large drive sizes — the rebuild window exceeds typical MTBF. RAID 10 (stripe of mirrors) wins for OLTP databases and VDI write caches.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (27 votes · 69,282 views) ›
Controlling HP ProLiant DL380 G6/G7 fan speed
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (17 votes · 83,131 views) ›
What happens when the USB key or SD card I've installed VMware ESXi on fails?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (32 votes · 52,880 views) ›
What is the use case of a SD slot on motherboard?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (42 votes · 27,979 views) ›
Disabling RAID feature on HP Smart Array P400
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
SMART monitoring: alert on attributes 187 (reported uncorrectable errors), 197 (current pending sector count), and 198 (offline uncorrectable count). Non-zero values typically indicate 30-90 days of remaining service life.
Interface selection: NVMe (PCIe Gen4/5) for random workloads above 500 IOPS. SAS SSDs for mid-tier. SATA HDDs for capacity / backup tiers. Match drive interface to RAID controller; mismatches force fallback to lowest common denominator.
HBA firmware mode: IT-mode (pass-through) is required for software RAID (ZFS, vSAN, Ceph). RAID-mode for hardware RAID. LSI/Broadcom 9300/9400/9500 series HBAs flash between modes cleanly.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (18 votes · 72,987 views) ›
How to make my HP server boot faster?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (21 votes · 57,076 views) ›
What to look for in a server rack?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (39 votes · 12,624 views) ›
How does IPMI sideband share the ethernet port with the host?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (29 votes · 31,624 views) ›
Is it bad to mount a rack mountable server vertically?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (23 votes · 42,816 views) ›
iDRAC Enterprise vs iDRAC Express on Dell Server
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
Interface selection: NVMe (PCIe Gen4/5) for random workloads above 500 IOPS. SAS SSDs for mid-tier. SATA HDDs for capacity / backup tiers. Match drive interface to RAID controller; mismatches force fallback to lowest common denominator.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
HBA firmware mode: IT-mode (pass-through) is required for software RAID (ZFS, vSAN, Ceph). RAID-mode for hardware RAID. LSI/Broadcom 9300/9400/9500 series HBAs flash between modes cleanly.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (11 votes · 66,608 views) ›
How to find out the exact IPMI unit you have for firmware upgrade?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (16 votes · 52,868 views) ›
HP plan to restrict access to ProLiant server firmware - consequences?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
SMART monitoring: alert on attributes 187 (reported uncorrectable errors), 197 (current pending sector count), and 198 (offline uncorrectable count). Non-zero values typically indicate 30-90 days of remaining service life.
HBA firmware mode: IT-mode (pass-through) is required for software RAID (ZFS, vSAN, Ceph). RAID-mode for hardware RAID. LSI/Broadcom 9300/9400/9500 series HBAs flash between modes cleanly.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (36 votes · 8,251 views) ›
Is it necessary to burn-in RAM for server-class hardware?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
DIMM type rule: RDIMM and LRDIMM cannot be mixed in the same channel. UDIMMs do not work in server motherboards. ECC and non-ECC cannot be mixed. Match rank and density across all DIMMs in the same channel.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (36 votes · 7,231 views) ›
Cage nuts - which way to insert them?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (26 votes · 25,083 views) ›
Should I use bios "Advanced ECC" in Dell PowerEdge R710 Bios with ECC DIMMs?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (16 votes · 43,559 views) ›
Is it possible to influence the way CPUs are enumerated under Linux?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (34 votes · 2,748 views) ›
Economical way to get many harddrives into rack mount?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
Interface selection: NVMe (PCIe Gen4/5) for random workloads above 500 IOPS. SAS SSDs for mid-tier. SATA HDDs for capacity / backup tiers. Match drive interface to RAID controller; mismatches force fallback to lowest common denominator.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (21 votes · 25,383 views) ›
Why do rack switches have their ports on the front?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
UPS sizing: 5-15 min runtime with generator backup, 30-60 min for sites without. Online double-conversion UPS for production workloads. Replace RBC batteries every 3-5 years. Monitor health via SNMP.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (20 votes · 24,903 views) ›
Differences between HW RAID and ZFS
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
RAID level guidance: for HDD arrays of drives 4 TB or larger, use RAID 6 (dual parity). RAID 5 is no longer responsible at large drive sizes — the rebuild window exceeds typical MTBF. RAID 10 (stripe of mirrors) wins for OLTP databases and VDI write caches.
Interface selection: NVMe (PCIe Gen4/5) for random workloads above 500 IOPS. SAS SSDs for mid-tier. SATA HDDs for capacity / backup tiers. Match drive interface to RAID controller; mismatches force fallback to lowest common denominator.
HBA firmware mode: IT-mode (pass-through) is required for software RAID (ZFS, vSAN, Ceph). RAID-mode for hardware RAID. LSI/Broadcom 9300/9400/9500 series HBAs flash between modes cleanly.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (11 votes · 42,108 views) ›
Mounting a server by only its ears?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (20 votes · 23,010 views) ›
Securing a SuperMicro IPMI BMC
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (17 votes · 28,595 views) ›
Server won't physically fit in rack: which technical problems will I face in future if I force the mount?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (26 votes · 5,577 views) ›
iDRAC login loop
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (13 votes · 30,195 views) ›
How do I stop Dell R730xd fans from going full speed when Broadcom/QLogic NetXtreme 57711 PCI card added?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (12 votes · 30,874 views) ›
Install existing SSL certificate on Dell iDRAC7
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (12 votes · 29,768 views) ›
What do I need to mount devices with threaded round holes in a server rack with square holes?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
The answer depends on your specific platform, workload, and operational requirements. For environment-specific guidance, email sales@prodisknetwork.com with your server model and target configuration.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (24 votes · 3,243 views) ›
Using Supermicro IPMI behind a Proxy?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
BMC access: ipmitool -H <ip> -U admin -P <pw> chassis status for remote IPMI. For Dell iDRAC, HPE iLO, Lenovo IMM/XCC, Supermicro IPMI — all expose Redfish REST API as the modern alternative.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (13 votes · 24,462 views) ›
Is it safe to use a UPS designed for desktop PCs to power a server?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
UPS sizing: 5-15 min runtime with generator backup, 30-60 min for sites without. Online double-conversion UPS for production workloads. Replace RBC batteries every 3-5 years. Monitor health via SNMP.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (17 votes · 5,899 views) ›
Best Practices for virtualizing servers onto the SAN?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
iSCSI / FC LUN scanning: from Linux iscsiadm -m discovery + iscsiadm -m node --login; on Windows, refresh in iSCSI Initiator. Rescan SCSI bus with echo "- - -" > /sys/class/scsi_host/hostN/scan.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (17 votes · 3,330 views) ›
Dell R730xd - Best way to configure storage for simultaneous use with ZFS & Hardware RAID
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
Interface selection: NVMe (PCIe Gen4/5) for random workloads above 500 IOPS. SAS SSDs for mid-tier. SATA HDDs for capacity / backup tiers. Match drive interface to RAID controller; mismatches force fallback to lowest common denominator.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (11 votes · 7,852 views) ›
RAID 6 array, one disk rebuilding?
Server chassis questions usually involve form factor, drive bay strategy, or rail kit fit.
RAID level guidance: for HDD arrays of drives 4 TB or larger, use RAID 6 (dual parity). RAID 5 is no longer responsible at large drive sizes — the rebuild window exceeds typical MTBF. RAID 10 (stripe of mirrors) wins for OLTP databases and VDI write caches.
Interface selection: NVMe (PCIe Gen4/5) for random workloads above 500 IOPS. SAS SSDs for mid-tier. SATA HDDs for capacity / backup tiers. Match drive interface to RAID controller; mismatches force fallback to lowest common denominator.
Linux memory accounting: RSS = physical RAM in use, VIRT = virtual address space (includes mapped files), PSS = proportional shared pages. The "available" column in free already accounts for reclaimable cache — use that as your real free-RAM number.
Pro Disk Network ships Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro chassis. Chassis buying guide · Server catalog
Original question on Server Fault (13 votes · 2,172 views) ›
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