The ThinkSystem RAID 540 PCIe Gen4 12Gb Adapters has the following specifications:
- PCIe 4.0 x8 host interface
- 12 Gbps SAS/SATA RAID controllers, based on the Broadcom MegaRAID 9540 adapter family
- Cacheless (not upgradeable)
- Connectivity for up to 16 internal SAS or SATA drives, depending on the adapters:
- RAID 540-8i: 8 internal drives
- RAID 540-16i: 16 internal drives
- Support for intermixing SAS and SATA HDDs and SSDs. Mixing SAS and SATA drives in the same array is not supported. Mixing of HDDs and SSDs in the same array is not supported.
- Support for intermixing of 12 Gbps and 6 Gbps drives.
- RAID level support: RAID 0, 1, 10
- Support for JBOD (non-RAID) drive state
- Support for up to 63 physical drives with SAS expander (where supported)
- Support for up to 32 virtual drives
- Support for logical drive sizes greater than 2 TB
- Fixed 64 KB stripe size
- Supports 512e, 512n and 4K sector formatted drives
- Supports UNMAP command for SAS SSDs (JBOD and RAID volumes)
- Supports TRIM command for SATA SSDs (JBOD)
- Compliant with Disk Data Format (DDF) configuration on disk (CoD).
- S.M.A.R.T. support.
- Configuration through
- XClarity Provisioning Manager UEFI interface
- XClarity Controller web interface
- XClarity Administrator Configuration Patterns
- StorCLI command-line interface
- LSI Storage Authority (LSA) GUI interface
- UEFI Human Interface Infrastructure (HII)
| Feature | RAID 540-8i | RAID 540-16i |
|---|---|---|
| Part number | 4Y37A78834 | 4Y37A78835 |
| Form factor | PCIe low profile | PCIe low profile |
| Controller chip | SAS3808 | SAS3816 |
| Host interface | PCIe 4.0 x8 | PCIe 4.0 x8 |
| Port interface | 12 Gb SAS | 12 Gb SAS |
| Number of ports | 8 | 16 |
| Port connectors | One x8 SFF-8654 | Two x8 SFF-8654 |
| Drive interface | SAS, SATA | SAS, SATA |
| Drive type | HDD, SED, SSD | HDD, SED, SSD |
| Hot-swap drives | Yes | Yes |
| Max devices | 8 | 16 |
| RAID levels | 0, 1, 10 | 0, 1, 10 |
| JBOD mode | Yes | Yes |
| Cache | None | None |
| CacheVault cache protection | No | No |
| Performance Accelerator (FastPath) | Yes | Yes |
| SED support (SafeStore) | Yes | Yes |
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