wikiSTEC s840 Enterprise SAS SSDs Information
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This article contains detailed information on STEC s840 Enterprise SAS SSDs (STEC ZeusIOPS Enterprise SAS MLC SSDs).
IOPS diagram taken from the STEC s840 Enterprise SAS SSDs TKperf test report (PDF)
General information
- SSD series: STEC s840 Enterprise SAS SSDs
- Data sheets:
- Form factor: 2,5"
- NAND flash memory: MLC
- Process technology: n/a
- Interface: 6 Gb/s SAS
- Additional information:
- STEC s840 Enterprise SAS SSD FAQ (www.stec-inc.com)
- Special features:
- CellCare: Engineering MLC Flash-Based SSDs to Reduce Total Cost of Ownership in Enterprise SSD Deployments (Whitepaper, stec-inc.com)
- SAFE: STEC Secure Array of Flash ElementsTM Technology Improves Reliability of Enterprise-Class SSDs (Whitepaper, stec-inc.com)
TKperf test report
STEC s840 Enterprise SAS SSDs TKperf Testreport
Models
| SSD | Capacity (net) |
Capacity (gross) |
Spare Area (GB and % in add. to net cap.) |
Flash-Chips | Endurance | Throughput | IOPS (max. random IOPS performance) | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Read | Write | Read | Write (on first 8 GiB) |
Write (on whole capacity) | ||||||
| S840E200M2 (form. Z16IZF2E-200UCV) | 200 GB | unknown | unknown | unknown | 3,65 PB[1] | up to MB/s | up to 300 MB/s | up to 75.000 | n/a | up to 11.000 |
| S840E400M2 (form. Z16IZF2E-400UCV) | 400 GB | unknown | unknown | unknown | 7,3 PB[1] | up to 500 MB/s | up to 300 MB/s | up to 75.000 | n/a | up to 11.000 |
| S842E800M2 (form. Z16IZF2E-800UCZ) | 800 GB | 1.024 GB (28%)[2] |
224 GB | 16x64 GB | 14,6 PB[1] | up to 500 MB/s | up to 300 MB/s | up to 75.000 | n/a | up to 11.000 |
Test reports
- STEC s840 Enterprise SSD Review (storagereview.com, 12.11.2012)
Firmware
| Date | Revision | Description |
|---|---|---|
| - | E4E9 | Initial Firmware. |
Source: Firmware Release Notes or querying of SSD's.
References
- ↑ 1.0 1.1 1.2 STEC s840 Enterprise SAS SSD FAQ (www.stec-inc.com): s840 drives based on MLC carry a 5-year warranty and allow for 10 full-capacity writes per drive per day.
- ↑ STEC s840 Enterprise SSD Review (storagereview.com, 12.11.2012): The 800GB model uses 64GB NAND pieces, giving it a total RAW capacity of 1TB and an over-provisioning level of 28%.
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Author: Werner Fischer Werner Fischer, working in the Knowledge Transfer team at Thomas-Krenn, completed his studies of Computer and Media Security at FH Hagenberg in Austria. He is a regular speaker at many conferences like LinuxTag, OSMC, OSDC, LinuxCon, and author for various IT magazines. In his spare time he enjoys playing the piano and training for a good result at the annual Linz marathon relay.
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