I only ordered one drive to make sure it supports DRAT and RZAT:
WD Red SA500 2TB SSD hdparm results:
hdparm -I /dev/sdr
/dev/sdr:
ATA device, with non-removable media
Model Number: WDC WDS200T1R0A-68A4W0
Serial Number: <removed>
Firmware Revision: 411000WR
Media Serial Num:
Media Manufacturer:
Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
Standards:
Used: unknown (minor revision code 0x005e)
Supported: 11 10 9 8 7 6 5
Likely used: 11
Configuration:
Logical max current
cylinders 16383 0
heads 16 0
sectors/track 63 0
--
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 3907029168
Logical Sector size: 512 bytes
Physical Sector size: 512 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 1907729 MBytes
device size with M = 1000*1000: 2000398 MBytes (2000 GB)
cache/buffer size = unknown
Form Factor: 2.5 inch
Nominal Media Rotation Rate: Solid State Device
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 1 Current = 1
Advanced power management level: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* WRITE_BUFFER command
* READ_BUFFER command
* DOWNLOAD_MICROCODE
* Advanced Power Management feature set
* 48-bit Address feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* 64-bit World wide name
* WRITE_UNCORRECTABLE_EXT command
* {READ,WRITE}_DMA_EXT_GPL commands
* Segmented DOWNLOAD_MICROCODE
unknown 119[8]
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* Gen3 signaling speed (6.0Gb/s)
* Native Command Queueing (NCQ)
* Phy event counters
* READ_LOG_DMA_EXT equivalent to READ_LOG_EXT
* DMA Setup Auto-Activate optimization
Device-initiated interface power management
Asynchronous notification (eg. media change)
* Software settings preservation
Device Sleep (DEVSLP)
* SANITIZE feature set
* BLOCK_ERASE_EXT command
* DOWNLOAD MICROCODE DMA command
* WRITE BUFFER DMA command
* READ BUFFER DMA command
* Data Set Management TRIM supported (limit 8 blocks)
* Deterministic read ZEROs after TRIM
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
2min for SECURITY ERASE UNIT. 2min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 5001b448b190bded
NAA : 5
IEEE OUI : 001b44
Unique ID : 8b190bded
Device Sleep:
DEVSLP Exit Timeout (DETO): 30 ms (drive)
Minimum DEVSLP Assertion Time (MDAT): 30 ms (drive)
Checksum: correct
Made a zpool with one drive, trim is supported behind a LSI 9300-8i SAS HBA:
zpool status -t wdssd_tank
pool: wdssd_tank
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
wdssd_tank ONLINE 0 0 0
ata-WDC_WDS200T1R0A-68A4W0_<removed> ONLINE 0 0 0 (untrimmed)
# zpool trim wdssd_tank
# zpool status -v wdssd_tank
pool: wdssd_tank
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
wdssd_tank ONLINE 0 0 0
ata-WDC_WDS200T1R0A-68A4W0_<removed> ONLINE 0 0 0 (trimming)
zpool status -t wdssd_tank
pool: wdssd_tank
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
wdssd_tank ONLINE 0 0 0
ata-WDC_WDS200T1R0A-68A4W0_<removed> ONLINE 0 0 0 (100% trimmed, completed at Sat 07 Dec 2019 01:26:43 PM MST)
So all is good. Going to order five more of these now.