Dell Technologies Boot Optimized Storage Solution-S2 User's Guide

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Technical specifications of BOSS-S2 card

The following table lists the BOSS-S2 card technical specifications:

Table 1. Technical specifications of BOSS-S2 cardThis table describes the technical specifications of BOSS-S2 card.
Function or feature	BOSS-S2 card
Hot–plug of M.2 drives	Yes
LED activity of M.2 drives	Yes
Controlled firmware update	Yes
RAID levels	RAID 1 and Non–RAID
Stripe size	Supports default 64 K stripe size only
Battery backup unit	No
Non–volatile cache	No
Virtual disk cache function	Write through
Maximum number of virtual disks	1
Maximum number of drives supported	2
Support for non–RAID disks	Yes (supports up to two disks)
Drive types	6 Gbps M.2 SATA SSDs x 2
PCIe support	Gen 2
Disk cache policy	Drive default
TRIM	Non–RAID mode
Stripe size supported	64 K
Configuration (HII)	Yes
Full initialization	No
Fast initialization	Yes NOTE:By default, fast initialization is performed when you create a virtual disk.
Background initialization	No
RAID 0	No
RAID 1	Yes
Single non–RAID	Yes
Dual non–RAID	Yes
Degraded RAID 1 and non–RAID	No
Foreign import	Yes
Consistency check	No
Patrol read	No
Load balance	N/A
Rebuild	Yes (Only Auto–rebuild)
Hot spare	No
Change rebuild priority/rate	No
Virtual disk write back/read ahead cache	No NOTE:BOSS-S2 controller does not support controller cache.
Battery support	N/A NOTE:BOSS-S2 controller does not support a battery.
Non–RAID disk cache policy	Yes NOTE:OS controlled or device defaults.
SMART Info	Yes NOTE:Use the BOSS-S2 CLI to retrieve the SMART information from the drives.
Physical disk hot–plug	Yes
Virtual disk expansion	No
Virtual disk slicing	No
Virtual disk migration	Yes NOTE:On new controller, virtual disk must be imported from HII before presented to OS.
Split mirror	No NOTE: System required to shutdown and migrate one physical disk to another system and continue rebuild.
Non–RAID migration	Yes
BIOS configuration utility (Ctrl-M)	Yes
Add on driver for data path (OS device driver)	No NOTE:Console Windows driver or Linux library is required for management purposes only.
4 K native drive support	No
TRIM and UNMAP virtual disk	No
TRIM and UNMAP non–RAID physical disk	Yes
Self-encrypting drives (SED) support	No
Cryptographic erase (sanitize)	Yes NOTE:If drive supports SANITIZE Crypto Erase. No other encryption support from controller or drive.