SFF-8088 cables look like four 7-pin cables were sheathed

The server in question is DELL PowerEDGE SC1435. I am thinking about buying a LSI 1068e based card with two internal SFF-8087 ports. I intend to use the machine with external multiple hard disk enclosure as a ZFS based file server. I would connect the card with SFF-8088 bracket (assume the length of 0.5m). Another SFF-8088 cable bracket on a hard disk enclosure should fan out to 4x SATA ports with intention to be used with sata disks (assume the length of 0.5m). What would be the maximum recommended length of the external SFF-8088 to SFF-8088 cable?12 hard drives, attached by a single SFF-8088 cable -- looks attractive! I've seen user reports on the web that say this combo works amazingly well.The SFF-8088 connector is a very widely used connector type that is commonly used today on SAS cards.
It carries the equivalent of four SATA/ SAS 7-pin connections through a SFF-8087 to SFF-8088 cable providing 12gbps of throughput using SAS or SATA II 3.0gbps devices. In fact, many makes of SFF-8088 cables look like four 7-pin cables were sheathed together and terminated at each end by SFF-8088 endpoints. SFF-8088 connectors tend to have locking QSFP-H40G-​CU1M – Compatible Cisco 40GbE QSFP+ QDR Direct-Att​ach Copper Cable 1m mechanisms that snap into place when a cable  is inserted. This generally keep the connections secure over time even if there is minor chassis movement and vibration.