Availability and serviceability
The ST550 provides the following features to simplify
serviceability and increase system uptime:
* Designed to run 24 hours a day, 7 days a week
* The server offers Single Device Data Correction (SDDC, also known
as Chipkill), Adaptive Double- Device Data Correction (ADDDC, also
known as Redundant Bit Steering or RBS), memory mirroring, and
memory rank sparing for redundancy in the event of a
non-correctable memory failure.
* The server offers hot-swap (HS) SSDs and HDDs, and supports RAID
redundancy for data protection and greater system uptime.
* Much like HS drives, simple-swap drives are mounted on an
easy-to-remove tray and work with the same RAID options.
Simple-swap require a system power-down before adding or replacing,
however simple-swap drives are less expensive than hot-swap drives.
* The Dual M.2 Boot Adapter supports RAID-1 which enables two
installed M.2 drives to be configured as a redundant pair.
* The server supports hot-swap power supplies; with two installed,
they form a redundant pair to provide availability for
business-critical applications. The server also offers an optional
4th fan which offers redundancy in most server configurations.
* Toolless cover removal provides easy access to upgrades and
serviceable parts, such as CPU, memory, and adapter cards.
* Proactive Platform Alerts (including PFA and SMART alerts) for:
processors, voltage regulators, memory, internal storage (SAS/SATA
HDDs and SSDs), fans, power supplies, RAID controllers, and server
ambient and sub-component temperatures. Alerts can be surfaced
through the XClarity Controller management processor to managers
such as Lenovo XClarity Administrator, VMware vCenter, and
Microsoft System Center. These proactive alerts let you take
appropriate actions in advance of possible failure, thereby
increasing server uptime and application availability.
* SSDs, with no moving parts, offer significantly better
reliability than mechanical HDDs, for greater uptime.
* The built-in XClarity Controller continuously monitors system
parameters, triggers alerts, and performs recovery actions in case
of failures to minimize downtime.
* Built-in diagnostics in UEFI, using Lenovo XClarity Provisioning
Manager, speed up troubleshooting tasks to reduce service time.
* Lenovo XClarity Provisioning Manager supports diagnostics and can
save service data to a USB key drive or remote CIFS share folder
for troubleshooting and reduce service time.
* Auto restart in the event of a momentary loss of AC power (based
on power policy setting in the XClarity Controller service
processor)
* Support for the XClarity Administrator Mobile app running on a
supported smartphone and connected to the server through the
service-enabled USB port, enables additional local systems
management functions.
* Three-year or one-year customer-replaceable unit and onsite
limited warranty, 9 x 5 next business day. Optional service
upgrades are available.
